The dealer should have sold the article for 103,500 naira to make a profit of 15%.
Let C be the cost price of the composition. According to the problem, the dealer vended the composition at a loss of 10, so he entered 90 of the cost price. thus, 90 of C is equal to 81,000 naira.
C = 81,000
C = 81,000/0.9
C = 90,000
So, the cost price of the composition is 90,000 naira.
Now, let's find out the selling price needed to make a profit of 15 Let S be the needed selling price to make a profit of 15. We know that profit chance is equal to( profit/ cost price) × 100.
Thus,(15/100) × 90,000 =
S- 90,000 , 500
= S- 90,000
S = 90,000 13,500
S = 103,500
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The box plot displays the number of push-ups completed by 9 students in a PE class.
A box plot uses a number line from 12 to 58 with tick marks every 2 units. The box extends from 27.5 to 42.5 on the number line. A line in the box is at 37. The lines outside the box end at 15 and 55. The graph is titled Push-Ups In PE and the line is labeled Number of Push-Ups.
Which of the following represents the value of the lower quartile of the data?
27.5
37
42.5
55
the answer is Q1 = 27.5
What is constant of proportionality if y=1. 75x
The constant of proportionality is 1.75.
What is proportion?
A percentage is created when two ratios are equal to one another. We write proportions to construct equivalent ratios and to resolve unclear values. a comparison of two integers and their proportions. According to the law of proportion, two sets of given numbers are said to be directly proportional to one another if they grow or shrink in the same ratio.
Given two variables x and y, y is directly proportional to x (x and y vary directly, or x and y are in direct variation) if there is a non-zero constant k such that
=> y=kx
The relation is often denoted, using the ∝ or ~ symbol, as
=> y ∝ x
and the constant ratio
=> k =y/x
In this equation y=1.75 x.
Hence the constant of proportionality is 1.75.
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Can someone please explain how to solve this question? Thanks!
The solutions for the value of k for the polynomial k²x³ - 6kx + 9 divided by x - 1 is derived to be k = 4 or k = 2 .
What is a polynomialA polynomial is a mathematical expression which have a sum of powers in one or more variables with coefficients. The highest power of the variable in a polynomial is called its degree.
The remainder theorem states that if a polynomial say f(x) is divided by x - a, then the remainder is f(a)
For the polynomial; k²x³ - 6kx + 9 divided by x - 1, we shall evaluate for f(1) to solve k as follows:
k²(1)³ - 6k(1) + 9 = 1
k² - 6k + 9 - 1 = 0
k² - 6k + 8 = 0
by factorization;
(k - 4)(k - 2) = 0
k = 4 or k = 2
Therefore, solutions for the value of k for the polynomial k²x³ - 6kx + 9 divided by x - 1 is derived to be k = 4 or k = 2 .
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Line x is parallel to line y. Line z intersect lines x and y. Determine whether each statement is Always True
Diego selling raffle tickets for $1.75 per ticket complete the table to show how much she earned for 50 tickets 20 tickets and r tickets
Diego selling raffle tickets for $1.75 per ticket and she earned for 50 tickets is $87.50.
When a purchase, appropriation, requisition, or direct engagement with the customer occurs at the point of sale, the seller or supplier of the products or services completes a transaction. Title (property or ownership) of the object is transferred, and a price is settled, meaning a price is agreed upon for which the ownership of the item will transfer.
We can calculate how much money Diego would make if he sold each quantity of raffle tickets for $1.75 each using Excel's multiplication function. It is possible to create a table with the number of tickets sold in one column and the money taken in the other.
Diego would receive $17.50, for instance, if he sold 10 tickets (10 x $1.75). If he sold 20 tickets, he would earn $35 (20 x $1.75), and so on. Using Excel's fill handle, you can quickly fill the table with the totals for each sold ticket.
The table would look like this:
Number of Tickets Sold | Amount of Money Earned
•----------------------------------|---------------------------------------•
10 | $17.50
20 | $35.00
30 | $52.50
40 | $70.00
50 | $87.50
By using the multiplication function in Excel, we can quickly calculate the amount of money Diego would earn for any number of raffle tickets sold at $1.75 per ticket.
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for each of the following situations identify the relation as linear quadratic or exponential. a. Larry is paid $10 per hour he receives a $1 per hour raise each year
The problem represents a linear equation.
What is linear equation?
A linear equation is a particular type of equation in which the highest power of the variable is always 1(linear). This type of equation is also known as a one-degree equation.
Larry is paid $10 per hour he receives a $1 per hour raise each year.
Let he works for x hours.
In 1 hour he receives $10 so for x hours he will receive $10x
$1 per hour raise.
So there will be a linear equation
The linear equation will be if we take total income as $y then,
y= 10x+1
which is of the linear equation form y=m x+ b where m is the slope.
Hence, the problem represents a linear equation.
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One can of pumpkin pie mix will make a pie ofdiameter 8 in. if 2 cans 9f pie mix are used to make a larger pie of the same thickness, find the diameter use square root of 2 equals 1. 414
The diameter of the larger pie is 8 x sqrt(2) inches.
How to find the diameter?The area of a circle is proportional to the square of its diameter. If the diameter of a pie made with one can of pumpkin pie mix is 8 inches, then its area is (4 inches)^2 x pi = 16 pi square inches.
If two cans of pie mix are used to make a larger pie of the same thickness, the total area of the pie will be twice that of the smaller pie.
So, the area of the larger pie is 2 x 16 pi = 32 pi square inches.
To find the diameter of the larger pie, we need to solve for d in the equation:
Area of circle = (d/2)^2 x pi
32 pi = (d/2)^2 x pi
32 = (d/2)^2
Taking the square root of both sides, we get:
sqrt(32) = d/2 x sqrt(2)
d/2 = sqrt(32)/sqrt(2)
d/2 = 4 x sqrt(2)
d = 8 x sqrt(2)
Therefore, the diameter of the larger pie is 8 x sqrt(2) inches.
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A person standing on the ground throws a rock upward with an initial velocity of 16 feet per second. The person’s hand is 12 feet above the ground when the rock is released. This is modeled by the equation h = -16^2 + 16t + 12. How long does it take for the rock to hit the ground?
It will take the rock 1.5 seconds to hit the ground
How to determine how long it take for the rock to hit the ground?Since the situation is modeled by the equation h = -16t² + 16t + 12
The rock will hit the ground when height is zero i.e. h = 0. Thus, we have:
-16t² + 16t + 12 = 0 and we can then solve for the time (t) .
-16t² + 16t + 12 = 0 (divide through by -16)
t² - t - 3/4 = 0
Using factorization method:
(t + 1/2) (t - 3/2) = 0
t = -1/2 or 3/2
Since t cannot be negative. Thus, t = 3/2 = 1.5.
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3. The insurance company also offers safety glass coverage. There is a 50% chance of no repairs ($0), a 30% chance of minor repairs ($50), and a 20% chance of full replacement ($300). Which plan for optional safety glass coverage has the lower expected cost?
Enter your answer.
Plan C has the lower expected cost, so, this is best to minimize costs for safety glass coverage.
How can we compare the plans?In order to compare expected cost of Plan C and D, we must calculate expected payout for each plan and add to the premium.
For Plan C, expected payout is:
= 0.5*(0) + 0.3*(50) + 0.2*(300)
= 15 + 60
= 75
The total expected cost of Plan C is:
= 75 + 50 + 20
= 145
For Plan D, expected payout is:
= 0.5*(0) + 0.3*(50) + 0.2*(300)
= 15 + 60
= 75
The total expected cost of Plan D is:
= 75 + 100 + 0
= 175
Therefore, the Plan C has the lower expected cost.
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Prove the following two properties of the Huffman encoding scheme. (a) If some character occurs with frequency more than 2=5, then there is guaranteed to be a codeword of length 1. (b) If all characters occur with frequency less than 1=3, then there is guaranteed to be no codeword of length 1
(a) Since the character occurs with a frequency higher than 2=5, it is guaranteed to be merged with another character with the same frequency or a lower frequency. Therefore, there is guaranteed to be a codeword of length 1 for this character. (b) Since all symbols occur with a frequency less than 1=3, the root of the tree will have a frequency less than 1=3. Therefore, there is guaranteed to be no codeword of length 1 for any symbol in this case.
(a) Let's assume that some character occurs with frequency more than 2=5.
The two nodes with the lowest frequency are merged into a single node, with the sum of their frequencies as the frequency of the new node.
This process is repeated until all the nodes are merged into a single node, which becomes the root of the tree.
Since the character occurs with a frequency higher than 2=5, it is guaranteed to be merged with another character with the same frequency or a lower frequency.
Therefore, there is guaranteed to be a codeword of length 1 for this character.
(b) Let's assume that all characters occur with frequency less than 1=3.
Consider the binary tree created by the Huffman algorithm. The root of the tree corresponds to the least frequent symbol, which will be assigned the longest codeword.
Since all symbols occur with a frequency less than 1=3, the root of the tree will have a frequency less than 1=3.
This means that the corresponding codeword for the root will be longer than 1 bit. Therefore, there is guaranteed to be no codeword of length 1 for any symbol in this case.
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The following graph shows a proportional relationship.
What is the constant of proportionality between
�
yy and
�
xx in the graph?
The constant of proportionality between y and x in the graph is 3
What is the constant of proportionality between y and x in the graph?From the question, we have the following parameters that can be used in our computation:
The graph
On the graph, we have the following readings
(x, y) = (1, 3)
Using the above as a guide, we have the following:
The constant of proportionality between y and x in the graph is
k = y/x
substitute the known values in the above equation, so, we have the following representation
k = 3/1
Evaluate
k = 3
Hence, the constant of proportionality between y and x in the graph is 3
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Ron is seeking a loan wi th a simple in teres t ra te o f 7 % per year . he wan ts to borrow $4,500.
If Ron were to borrow $4,500 at a simple interest rate of 7% per year, he would be charged $315 in interest each year.
How to find the interest rate?Ron is seeking a loan with a simple interest rate of 7% per year, which means that he will be charged 7% of the loan amount as interest each year. Ron wants to borrow $4,500, so to calculate the amount of interest he will be charged each year, we can use the following formula:
Interest = Principal x Rate x Time
In this formula, "Principal" refers to the loan amount, "Rate" refers to the interest rate as a decimal (so 7% would be 0.07), and "Time" refers to the length of time the loan will be outstanding, typically measured in years.
Since Ron is seeking a loan with a simple interest rate, we can assume that the interest will be calculated on an annual basis. So if Ron wants to borrow $4,500 at a simple interest rate of 7% per year, the amount of interest he will be charged each year would be:
Interest = $4,500 x 0.07 x 1
Interest = $315
Therefore, if Ron were to borrow $4,500 at a simple interest rate of 7% per year, he would be charged $315 in interest each year. It's important to note that this calculation assumes that Ron will not be making any payments on the loan during the year, and that the interest will be added to the principal amount at the end of the year. In practice, many loans are structured differently and may involve monthly payments or other terms.
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What is the equation of a circle whose center is at the origin and whose radius is 16?x 2 + y 2 = 256x 2 + y 2 = 4x 2 + y 2 = 16
The equation of the circle with center at the origin and radius 16 is x^2 + y^2 = 256.
To find the equation of a circle with center at the origin and radius 16, we can use the general equation of a circle:
x^2 + y^2 = r^2
where (x, y) are the coordinates of any point on the circle, and r is the radius.
In this case, the center is at the origin, so the coordinates (x, y) are both 0. The radius is given as 16. Plugging these values into the equation, we have:
0^2 + 0^2 = 16^2
0 + 0 = 256
Thus, the equation of the circle is:
x^2 + y^2 = 256
So, the equation of the circle with center at the origin and radius 16 is x^2 + y^2 = 256.
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Ella makes a model of a log cabin that is 8 inches long at a scale of 1/2.5 feet. She makes a second model of the same building at a scale of 1/2.5 feet. How much longer is the second model than the first?
Answer: So the second model is 0.2667 feet longer than the first.
Step-by-step explanation: 8 inches * (1/12 feet per inch) * (1/2.5) = 0.1333 feet
So the length of the first model is 0.1333 feet.
The length of the second model is also at a scale of 1/2.5 feet, so its length can be found directly by multiplying the length of the actual building by the scale factor:
Length of second model = 1/2.5 * 1 foot = 0.4 feet
to make next step we can use difference between these numbers by their lengths: Length of second model - Length of first model = 0.4 feet - 0.1333 feet = 0.2667 feet
PLEASE HELP ME WITH THIS MATH PROBLEM!!! WILL GIVE BRAINLIEST!!! 25 POINTS!!!
Answer: In bold
Step-by-step explanation:
The formula they gave is a rate
Let's solve for the rate first.
This equation is done for 3 years 2018-2021 that's why ^3
3.55 = 2.90(1+x)³ >divide both sides by 2.90
1.224 = (1+x)³ > take cube root of both sides
1.0697 = 1+x
x= .0697
so let's make our generic formula
[tex]y = 2.90(1+.0697)^{t}[/tex] let t be years and let y= price
Let's calculate 2018, so this would be year 0
[tex]y = 2.90(1+.0697)^{0}[/tex]
y=$2.90 this is for 2018
They already gave you 2021 price
y=$3.55 this is for 2021
Rate of increase is .0697
In 2025
That's 7 years=t
[tex]y = 2.90(1+.0697)^{7}[/tex]
y=$4.65 for 2025
A homeowner borrows $65,000 to remodel their home. The loan is financed at a 2.3% interest rate, compounded quarterly. How much will the homeowner owe after 8 years? Group of answer choices $78,090 $65,023 $78,117 $67,300
A homeowner borrows $65,000 to remodel their home. The loan is financed at a 2.3% interest rate, compounded quarterly.
So we have to find 2.3% of 65,000 which is 1495
Now we have to multiply 1,495 by 8 because it is 8 years which is 11960. Now we add 11,960 to 65,000 and our answer is
Answer : 76960
(Choice 1)
Please answer all three question
1. To the nearest tenth how many miles is alshleys house from Bridget house
2. To the nearest tenth how many miles is Ashley’s house from carlys house
3. Whose house does Ashley live the closet to and by how many miles
Please answer
The nearest tenth how many miles is alshleys house from Bridget house is AB = √[(xB-xA)² + (yB-yA)²]
The nearest tenth how many miles is Ashley’s house from carlys house is AC = √[(xC-xA)² + (yC-yA)²]
The distances from Ashley's house to both Bridget's house and Carly's house, we can compare them and see which one is shorter.
To find the distance between Ashley's house and Bridget's house, we need to know the coordinates of both locations. Let's say Ashley's house is located at point A, and Bridget's house is located at point B. We can use the distance formula to find the distance between A and B:
distance AB = √[(xB-xA)² + (yB-yA)²]
Here, xA and yA represent the coordinates of Ashley's house, and xB and yB represent the coordinates of Bridget's house. The formula calculates the square root of the sum of the squares of the differences between the x-coordinates and y-coordinates of the two points.
To find the distance between Ashley's house and Carly's house, we again need to know the coordinates of both locations. Let's say Ashley's house is located at point A, and Carly's house is located at point C. We can use the same distance formula as before:
distance AC = √[(xC-xA)² + (yC-yA)²]
Here, xC and yC represent the coordinates of Carly's house. Plug in the values and calculate the distance to the nearest tenth of a mile.
To determine whose house Ashley lives closest to, we need to calculate the distances from Ashley's house to both Bridget's house and Carly's house. Whichever house has the shorter distance will be the closer one.
To find the difference between the two distances, we can subtract the smaller distance from the larger distance.
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A lube and oil change business believes that the number of cars that arrive for service is the same each day of the week. If the business is open six days a week (Monday - Saturday) and a random sample of n = 200 customers is selected, the critical value for testing the hypothesis using a goodness-of-fit test is x2 = 9. 2363 if the alpha level for the test is set at. 10
The hypothesis to be tested here is that the number of cars arriving for service is the same for each day of the week.
The null hypothesis, denoted as H0, is that the observed frequency distribution of cars is the same as the expected frequency distribution.
The alternative hypothesis, denoted as H1, is that the observed frequency distribution of cars is not the same as the expected frequency distribution.
To test this hypothesis, we use a goodness-of-fit test with the chi-square distribution. The critical value for a chi-square distribution with 6 - 1 = 5 degrees of freedom (one for each day of the week) and alpha level of 0.10 is 9.2363.
If the computed chi-square statistic is greater than 9.2363, then we reject the null hypothesis and conclude that the observed frequency distribution is significantly different from the expected frequency distribution.
Thus, if the computed chi-square statistic is greater than 9.2363, we can conclude that the number of cars arriving for service is not the same for each day of the week, and there is evidence to support the alternative hypothesis.
If the computed chi-square statistic is less than or equal to 9.2363, then we fail to reject the null hypothesis, and there is not enough evidence to suggest that the observed frequency distribution is different from the expected frequency distribution.
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Which of these could be the side lengths of a right triangle? list all possible answers and show your work for full marks.
a) 4-7-10
b) 36-48-60
c) 6-10-14
d) 14-48-50
The sets of side lengths that could form a right triangle are 36-48-60 (option b) and 14-48-50 (option d).
To determine which of these sets of side lengths could form a right triangle, we will use the Pythagorean theorem (a² + b² = c²), where a and b are the shorter sides and c is the hypotenuse. Let's evaluate each option:
a) 4-7-10
Applying the Pythagorean theorem: 4² + 7² = 16 + 49 = 65, which is not equal to 10² (100). So, this set does not form a right triangle.
b) 36-48-60
Applying the Pythagorean theorem: 36² + 48² = 1296 + 2304 = 3600, which is equal to 60² (3600). So, this set does form a right triangle.
c) 6-10-14
Applying the Pythagorean theorem: 6² + 10² = 36 + 100 = 136, which is not equal to 14² (196). So, this set does not form a right triangle.
d) 14-48-50
Applying the Pythagorean theorem: 14² + 48² = 196 + 2304 = 2500, which is equal to 50² (2500). So, this set does form a right triangle.
In conclusion, the sets of side lengths that could form a right triangle are 36-48-60 (option b) and 14-48-50 (option d).
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In triangle JK L, cos(K) = 21 and angle J is a right angle. What is the value of cos (L)?
solve in the simplest way possible
The radius of a bade if a cone is 8 cm. The height is 15 cm. What is the volume of the cone?
Answer: 1,004.8 or 320[tex]\pi[/tex]
Step-by-step explanation:
[tex]\frac{1}{3} \pi 8^{2} 15=1,004.8[/tex]
PLEASE HELP THIS AN FRESHMAN QUESTION
Answer:
Sure, I can help you with that.
To find the area of the gazebo floor, we can think of the decagon as being composed of ten congruent triangles. Each triangle has a base of 10 feet and a height of 192 feet. The area of a triangle is equal to (1/2)bh, so the area of each triangle is (1/2)(10)(192) = 960 square feet. The area of the decagon is equal to 10 times the area of each triangle, or 960*10 = 9600 square feet.
Therefore, the area of the gazebo floor is 9600 square feet.
Here is a diagram of the decagon, with the ten congruent triangles labeled:
[Image of a decagon with ten congruent triangles labeled]
I hope this helps! Let me know if you have any other questions.
Step-by-step explanation:
I'm so grateful for your help. I would be honored if you would give me a Brainlyness award."
In 1990, when the consumer price index (CPI) was 130.7, Deena purchased a
house for $98,700. Assuming that the price of houses increased at the same
rate as the CPI from 1980 to 1990, approximately how much would the house
have cost in 1980, when the CPI was 82.4?
OA. $72,650
OB. $67,600
O C. $62,200
OD. $84,600
Answer:
C is the right answer I think
To find the cost of the house in 1980, divide the cost of the house in 1990 by the rate of increase. The house would have cost approximately $62,200 in 1980 when the CPI was 82.4.
Explanation:To find the cost of the house in 1980, we need to use the concept of inflation. In this case, we can use the consumer price index (CPI) to compare the prices of the house in 1990 and 1980.
First, we need to determine the rate of increase from 1980 to 1990. The rate of increase is calculated by dividing the CPI in 1990 by the CPI in 1980:
Rate of increase = CPI in 1990 / CPI in 1980 = 130.7 / 82.4 = 1.585
Next, we can use the rate of increase to find the cost of the house in 1980. We divide the cost of the house in 1990 by the rate of increase:
Cost in 1980 = Cost in 1990 / Rate of increase = $98,700 / 1.585 = $62,200.
Therefore, the house would have cost approximately $62,200 in 1980 when the CPI was 82.4.
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Given the following triangle, If Sin F = 3/5 , then find the Cos D: A) 4/5 B) 4/3 C) 3/4 D) 3/5
If Sin F = 3/5 , then the value of Cos D is 4/5 (option a)
Let us consider the triangle in the given question. Since we are given that Sin F = 3/5, we know that the side opposite angle F is 3 and the hypotenuse is 5. Using Pythagoras theorem, we can find the length of the adjacent side as follows:
Opposite² + Adjacent² = Hypotenuse²
3² + Adjacent² = 5²
9 + Adjacent² = 25
Adjacent² = 16
Adjacent = 4
So we have found that the length of the adjacent side is 4. Now we can use the definition of cosine to find Cos D.
Cosine is defined as the ratio of the adjacent side to the hypotenuse. Therefore,
Cos D = Adjacent/Hypotenuse = 4/5
Hence, the answer is option A) 4/5.
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Reina’s greenhouse is shaped like a square pyramid with four congruent equilateral triangles for its sides. All of the edges are 6 feet long. What is the total surface area of the greenhouse including the floor? Round your answer to the nearest hundredth.
____ft2
With all of the edges 6 feet long, the total surface area of the greenhouse including the floor is approximately 98.39 ft².
To find the total surface area of Reina's greenhouse, we'll need to calculate the area of the equilateral triangular sides and the square base.
1. Equilateral triangular sides:
There are four congruent equilateral triangles with edges of 6 feet each. To find the area of one triangle, we can use the formula A = (s² * √3) / 4, where A is the area and s is the side length.
A = (6² * √3) / 4 = (36 * √3) / 4 = 9√3 square feet
Since there are four triangles, the total area of the triangular sides is 4 * 9√3 = 36√3 square feet.
2. Square base:
The base is a square with side lengths of 6 feet. To find the area, we can use the formula A = s².
A = 6² = 36 square feet
Now, let's add the area of the triangular sides and the square base
Total surface area = 36√3 + 36 ≈ 98.39 ft² (rounded to the nearest hundredth)
So, the total surface area of the greenhouse including the floor is approximately 98.39 ft².
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Can someone please help me ASAP? It’s due tomorrow.
The total number of outcomes for the compound event is m*n
option B.
What is the Counting Principle?The Fundamental Counting Principle states that if there are m ways to do one thing and n ways to do another thing, then there are m*n ways to do both things together.
This applies to compound events that consist of two or more independent events.
For example, suppose you have two dice and you want to know how many possible outcomes there are when you roll them. Each die has 6 possible outcomes, so by the Fundamental Counting Principle, the total number of outcomes for the compound event is 6*6 = 36.
So, for any two independent events with m and n outcomes, respectively, the total number of outcomes for the compound event is m*n.
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Find the value of w. Round to the nearest tenth.
Answer:
w ≈ 68,3
Step-by-step explanation:
Use trigonometry:
[tex] \sin(42) = \frac{w}{102} [/tex]
Cross-multiply to find w:
[tex]w = 102 \times \sin(42°) ≈68.3[/tex]
Map of the city zoo a triangle with points zebras, monkeys, and lions. the distance from zebras to monkeys is 52 feet and from monkeys to lions is x feet. a triangle with points lions, tigers, elephants. the distance from lions to tigers is 96 feet and from tigers to elephants is 78 feet. the path from the zebras to the monkeys is parallel to the path from the tigers to the elephants. what is the distance between the lions and monkeys? 1. proportion: 52 78 = x 96 2. cross-multiply: 4992 = 78x 3. solve: the distance between the lions and the monkeys is feet.
The distance between the lions and the monkeys is 64 feet.
We can set up a proportion to find the distance between the lions and monkeys. Here's the step-by-step explanation:
1. Proportion: Since the path from zebras to monkeys is parallel to the path from tigers to elephants, we can set up a proportion using the given distances: 52/78 = x/96.
2. Cross-multiply: To solve for x, we can cross-multiply: 52 * 96 = 78 * x, which simplifies to 4992 = 78x.
3. Solve: Now we just need to solve for x. Divide both sides of the equation by 78: x = 4992 / 78. This gives x ≈ 64.
So, the distance between the lions and the monkeys is approximately 64 feet.
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When Bernard was as old as Hector is now, Bernard's age was 4 times Hector's age then. When Hector will be as old as Bernard is now, the sum of their ages will be 51. How old will Bernard be when Hector turns 18 years old?
Base on the word problem, Bernard is currently 21.25 years old. When Hector turns 18, he will be (18 - 17) = 1 year older than his current age. At that time, Bernard will be (21.25 + 1) = 22.25 years old.
Word problem calculation.Let's start by assigning variables to represent the current ages of Bernard and Hector. Let B be Bernard's current age and H be Hector's current age. Then we can write two equations based on the given information:
"When Bernard was as old as Hector is now, Bernard's age was 4 times Hector's age then." This means that Bernard is currently (B - H) years older than Hector, and that the age difference between them has remained constant over time. So, we can write: B - (B - H) = 4(H - (B - H)).
Simplifying this equation, we get: B - B + H = 4(2H - B)
Simplifying further, we get: 5H - 4B = 0, or B = (5/4)H.
"When Hector will be as old as Bernard is now, the sum of their ages will be 51." This means that when Hector is (B - H) years older than his current age, their sum of ages will be 51. So, we can write: B + (B - H + (B - H)) = 51.
Simplifying this equation, we get: 3B - 2H = 51.
Now we have two equations with two variables. We can substitute the expression for B from the first equation into the second equation, and solve for H:
3B - 2H = 51
3(5/4)H - 2H = 51
(15/4)H = 51
H = 17
So, Hector is currently 17 years old. To find out how old Bernard will be when Hector turns 18, we can use the expression we found earlier for B in terms of H:
B = (5/4)H
B = (5/4)(17)
B = 21.25
So, Bernard is currently 21.25 years old. When Hector turns 18, he will be (18 - 17) = 1 year older than his current age. At that time, Bernard will be (21.25 + 1) = 22.25 years old.
Learn more about word problem below.
https://brainly.com/question/21405634
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what's the solution?
Answer:
(1, 1.5)
Step-by-step explanation:
If x = 1, plug it into the other equation, y = 1/2x + 1, and y = 1.5.