The number of hours that Sam spends walking is 1 hour. And the number of hours that Sam spends biking is 2 hours.
What is speed?We know that the speed formula
Speed = Distance/Time
Let 'x' and 'y' be the time when he walks and when he biking. Then the equations are given as,
x + y = 3 ...1
4x + 12y = 20 ...2
From equations 1 and 2, then we have
4(3 - y) + 12y = 20
12 - 4y + 12y = 20
8y = 8
y = 1 hour
The value of 'x' is calculated as,
x + 1 = 3
x = 2 hours
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The temperature at noon is 0 degree celsius.The temperature changes by -3/2 celsius every hour for 4 hours. Write an expression to represent this situation.What is the temperature at 4:00 pm
Answer:
-6
Step-by-step explanation:
-3/2 x 4/1 = 12/2
Simply to -6/1 or -6
The required temperature would be -6°C at 4:00 pm, which is determined by the expression -3/2 × 4/1.
What is a numerical expression?A numerical expression is algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.
At midday, the temperature is 0 degrees Celsius. For four hours, the temperature decreases by -3/2 degrees Celsius per hour.
According to the given condition, we can write the expression as:
⇒ -3/2 × 4/1
⇒ -12/2
Apply the division operation to get the solution
⇒ -6
So, the time at which the temperature goes -6°C is 4:00 PM.
Therefore, the required temperature would be -6°C at 4:00 pm.
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A right triangle has a leg whose length is 50 and the hypotenuse is 100. Find the length of the other leg. Round your answer to the nearest tenth.
Can someone help me I will award brainliest!
Answer:
90 . I think I'm not sure
The check of the polynomial division problem shows that the product of two polynomials is a polynomial. This supports the fact that the property is satisfied for polynomial multiplication.
The answer is closure
Answer:
closure
Step-by-step explanation:
Heather solved this problem:
75 is 300% of what number?
A tape diagram. StartFraction part Over whole EndFraction = StartFraction 300 Over 100 EndFraction = StartFraction 75 Over question mark EndFraction. StartFraction part Over whole EndFraction = StartFraction 75 times 4 Over 100 times 4 EndFraction = StartFraction 300 Over 400 EndFraction
What error did Heather make?
Answer:
She used the part, 75, to write the percent ratio. The part-to-whole percent ratio is StartFraction 300 Over 100 EndFraction
Step-by-step explanation:
D
Answer:
hope this helps and have a great day:)
a. use the two points. to find the equation that represents the linear function f.
b. what is f(6)
9(42) - 9(4) = 9(30) - 9(___)
Answer: 8 (I might have gotten it wrong tho) could be -8 too btw.
Step-by-step explanation:
42x9=378 and 9x4=36. 9x30=270 so that would make the equation 378-36=270-9(_). Simplified a bit more would be 342=270-9(_). Now subtract 270 from both sides you get 72=9(_) so it would be 8. Sorry if I’m wrong tho.
Answer:
9(42) - 9(4) = 9(30) - 9(-8)
Step-by-step explanation:
9(42 - 4) = 9(38)
9[30 - (-8)] = 9(38) because of rules of subtracting integers is:
Two like signs become a positive sign
Example:
3+(+2) = 3 + 2 = 5
6−(−3) = 6 + 3 = 9
Two unlike signs become a negative sign
Example:
7+(−2) = 7 − 2 = 5
8−(+2) = 8 − 2 = 6
The total fare (F) for x kilometers given that Php 50.00 is paid for the first 10 kilometers and the addition of Php 5.00 for every succeeding kilometer.
Given:
Php 50.00 is paid for the first 10 kilometers and the addition of Php 5.00 for every succeeding kilometer.
To find:
The total fare (F) for x kilometers.
Solution:
Let x be the number of kilometers and F(x) is total fare.
Number of kilometers cannot be negative. So, x is always greater than 0.
Php 50.00 is paid for the first 10 kilometers.
[tex]f(x)=50.00[/tex] for [tex]0\leq x\leq 10[/tex]
The addition of Php 5.00 for every succeeding kilometer.
[tex]f(x)=50.00+5.00(x-10)[/tex] for [tex]x\geq 10[/tex]
Therefore, the required function is
[tex]\begin{cases}50.00, & \text{ if } 0\leq x\leq 10\\ 50.00+5.00(x-10), & \text{ if } x\geq 10 \end{cases}[/tex].
whats the answer to this? like what does t equal? t=4t+27
Answer:
t = -9
Step-by-step explanation:
t = 4t + 27
-t -t
0 = 3t + 27
-27 -27
-27 = 3t
÷3 ÷3
-9 = 3t or 3t = -9
The length of the box is what in?
Answer:
Length is always the longest side of the box that has a flap. The next dimension is width. The width side also has a flap, but is always the side shorter than the length.
Step-by-step explanation:
Solve for the equation for y: 3/2 y + 12 = 7/5 y-20
Answer:29/10y=-32
Step-by-step explanation:simply find a common denominator in this case ten add them together and subtract 12 to -20 and your done
giana read 120 pages in 4 days which reading rate is equivalent ?
Answer:
30 pages a day
Step-by-step explanation:
Answer:
120 pages in 4 days can be turned into this mathematical expression: 120/4.
120/4 = 30/1 = 60/2 = 90/3.
Therefore, "B. 60 pages in 2 days" is the correct answer.
Step-by-step explanation:
omg help meAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Answer: D lower
Step-by-step explanation:
Which is a commercial use for lactic acid fermentation?
brewing beer
baking bread
making wine
making cheese
Answer:
it's making cheese (:
Step-by-step explanation:
Answer:
D. Making Cheese
Step-by-step explanation:
It's right on edge 2020
which of these would earn the sam interest as a $150 principal at a 4% annual interest for 2 years
1.) $300 at 2% for 2 years
2.) $150 at 6% for 18 months
3.) $400 at 3% for 1 year
4.) $100 at 1% for 8 years
5.) $50 at 48% for 6 months
9514 1404 393
Answer:
1, 3, 5
Step-by-step explanation:
The interest earned is given by the formula ...
I = Prt
For the reference amount, that is ...
I = ($150)(0.04)(2) = $12
For the choices, the earned interest amounts are ...
1) ($300)(.02)(2) = $12
2) ($150)(.06)(1.5) = $13.50
3) ($400)(.03)(1) = $12
4) ($100)(.01)(8) = $8
5) ($50)(0.48)(0.5) = $12
Accounts 1, 3, 5 would earn the same interest.
Three times the square of a number is greater than a second number. The square of the second number increased by 6 is greater than the first number. Which system of inequalities represents these criteria?
Given:
Three times the square of a number is greater than a second number.
The square of the second number increased by 6 is greater than the first number.
To find:
The system of inequalities represents these criteria.
Solution:
Let the first number be x and the second number be y.
Three times the square of a number is greater than a second number.
[tex]3\times x^2>y[/tex]
[tex]3x^2>y[/tex] ...(i)
The square of the second number increased by 6 is greater than the first number.
[tex]y^2+6>x[/tex] ...(ii)
Therefore, the system of inequalities represents these criteria has inequalities [tex]3x^2>y[/tex] and [tex]y^2+6>x[/tex], where x is first number and y is second number.
The system of inequalities represents given criteria are [tex]3x^{2} > y[/tex] and [tex]y^{2} +6 > x[/tex].
Let us take the numbers as x and y respectively.
First number = x
Second number = y
What is inequality?
Inequality is the relationship between two expressions that are not equal to one another.
Three times the square of the first number is greater than a second number:
This means, [tex]3x^{2} > y[/tex]
The square of the second number increased by 6 is greater than the first number:
This means, [tex]y^{2} +6 > x[/tex]
Therefore, the system of inequalities represents given criteria are [tex]3x^{2} > y[/tex] and [tex]y^{2} +6 > x[/tex].
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A 1×6 square unit rectangular grid has to be covered with six 1×1 square unit tiles. Three of the tiles are yellow, two are white, and one is blue. In how many ways can this task be done if
b
no two neighboring tiles are the same color?
The number of ways the task of Rearranging the rectangular grid can be done if no two neighboring tiles are the same color is;
P(no two neighboring tiles are same) = 60 ways
We are given;
Number of yellow tiles; n_y = 3
Number of white tiles; n_w = 2
Number of blue tiles; n_b = 1
Now, if no two neighboring tiles can be the same tile Color, it means that;
P(no two neighboring tiles are same) = number of ways when no restriction/((n_y)! × (n_w)! × (n_b)!)
>> P(no two neighboring tiles are same) = 6!/(3! × 2! × 1!)
>> P(no two neighboring tiles are same) = 720/12
P(no two neighboring tiles are same) = 60 ways
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N decreased by 18 is 36
Answer:
54
Step-by-step explanation:
Step 1:
n - 18 = 36 Equation
Step 2:
n = 36 + 18 Add 18 on both sides
Answer:
n = 54
Hope This Helps :)
Answer:
54
Step-by-step explanation:
54-18=36
please help me with these 2 questions.
Answer:
Step-by-step explanation:
It's a both times
use the graph to evaluate the function below for specific inputs and outputs
Answer:
b
Step-by-step explanation:
helppppppppp plssssssss
what type of math is that?
At its highest point, the elevation of a county is 5,763 feet above sea level. At its lowest point, the elevation of the county is 8 feet below sea level
Answer:
Expression = (y + 5,763) - (y - 8)
Simplified expression = 5,763 + 8
Step-by-step explanation:
• Note: The question is incomplete, however, the concluding part is ; write an expression, using integers to represent the difference between the elevations.
We can make y represent the sea level.
Since the highest point of the country is 5,763 feet above sea level, it Means that the expression can be written as;
y + 5,763
Also, we know that the lowest point is 8 feet below the sea level, hence expression can be written as;
y - 8
We can then find the difference(expression) between both elevation.
= (y + 5,763) - (y - 8)
When the expression is further simplified, we'll have;
5,763 + 8
Please help! Thanks if its right.
Answer:
v=bh/3
Step-by-step explanation:
Answer:
v=bh/3
Explanation:
One pipe can fill a pool 1.25 times faster than a second pipe. When both pipes are opened, they fill the pool in five hours. How long would it take to fill the pool if only the slower pipe is used?
Answer: 0.5
Step-by-step explanation: 5 divide by 2 = 2.5. 2.5 minus 2 = 0.5
the square root of 66 is between 8.12 and _,and it is closer to_
Answers:
Square root of 66 is between 8 and 9
It is closer to 8
===================================================
Explanation:
Note that 66 is between the perfect squares 64 and 81
So we can say the following:
[tex]64 < 66 < 81\\\\\sqrt{64} < \sqrt{66} < \sqrt{81}\\\\8 < \sqrt{66} < 9[/tex]
Meaning the square root of 66 is between the integers 8 and 9.
The decimal approximation of 8.12 helps confirm this (because 8.12 is between 8 and 9).
------------------
[tex]\sqrt{66}[/tex] is closer to 8 than it is to 9 since 66 is closer to 64, than 66 is to 81.
Also, we're told that [tex]\sqrt{66} \approx 8.12[/tex] giving us more proof that [tex]\sqrt{66}[/tex] is closer to 8.
Which points lie on the graph of f(x) = Negative StartRoot negative x EndRoot? (–9, 3) (–4, –2) (–1, 1) (0, 0) (1, 1) (2, –4) (9, 3)
Answer:b and d
Sbrhabsbdbabsbsbs
Answer:
The correct answers are (–4, –2) and (0, 0).
Step-by-step explanation:
This is correct on Edg. 2020
Then, give an example of when "the square root of a
whole number is irrational" IS NOT TRUE.
Answer:
The square root is not an example when a number is not part of the following number meaning that the correct indirection of the longitude is the correctness of the featured position on the term to term sequence
The PTA has $1,374 to spend on student planners. If each planner costs $3, how many planners can the PTA purchase?
Answer: 4122
Step-by-step explanation: 1374 times 3= 4122
Can someone tell me the answer plz I’ll give you brainlist and points NO WRONG ANSWERS
Answer:
-5
Step-by-step explanation:
=> x + (-5) = -10
=> x - 5 = -10
=> x = -10 + 5
=> x = -5
Prove that
[tex](1 - { \tan }^{2} a) + (1 + { \tan }^{2} a) = 2[/tex]
Answer:
Step-by-step explanation:
Hey there!
Given;
(1-tan^2a) + (1+tan^2a)= 2
LHS:
=(1-tan^2a)+(1+tan^2a)
Remove brackets.
=1-tan^2a + 1 +tan^2a
Cancel "tan^2a" and "-tan^2a"
= 1+1
= 2
RHS proved....
Hope it helps...
A car servicing station is running a special offer. The breakdown of the cost for different services is given below. Membership Fee: $50 (one-time cost) Air Freshener Cost: $4 per car per month Washing Cost: $10 per car per month Tire Replacement Cost: $400 per car Tire Pressure Check Cost: $15 per month The total cost for 12 months of this service for n cars is given by the expression below. Which statement best describes the constant in the expression? A. It is the monthly cost of the air freshener, washing, and tire replacement. B. It is the monthly cost of the membership fee and the tire pressure check. C. It is the total cost of the membership fee and the tire pressure check for 12 months. D. It is the total cost of the air freshener, washing, and tire replacement for 12 months.
Answer:
It is the total cost of the membership fee and the tire pressure check for 12 months.
Step-by-step explanation:
given data
Membership Fee: $50
Cost: $4 per car per month
Washing Cost: $10 per car per month
Tire Replacement Cost: $400 per car Tire Pressure Check Cost: $15 per month
let the total cost be y
and the number of cars be n'
and the number of months be x
the model for the situation is given as
y=50+4nx+10nx+15
from the expression above the constant term is the total cost of the membership fee and the tire pressure check for 12 months.