Answer:
6075
Step-by-step explanation:
Given series is: 25 + 30 + 35 + ⋯ + 245.Here, first term (a) = 25Common difference (d) = 5Last term [tex](a_n) = 245[/tex]First we find the number of terms that this series has by the following formula:[tex]a_n = a+(n-1)d[/tex]Plugging the values of a, d and [tex]a_n[/tex], we find.[tex]245 = 25+(n-1)5[/tex][tex]\implies 245 - 25=(n-1)5[/tex][tex]\implies 220=(n-1)5[/tex][tex]\implies \frac{220}{5}=n-1[/tex][tex]\implies 44=n-1[/tex][tex]\implies 44+1=n[/tex][tex]\implies\red{\bold{ n=45}}[/tex]Thus, the given series contains 45 terms.Next, we find the sum of the given series using the formula given below.[tex]S_n = \frac{n}{2}(a+a_n)[/tex][tex]\implies S_{45}= \frac{45}{2}(25+245)[/tex][tex]\implies S_{45}= \frac{45}{2}(270)[/tex][tex]\implies S_{45}=45*135[/tex][tex]\implies\orange{\boxed{\boxed{\boxed{\bold{ S_{45}=6075}}}}}[/tex]Help me find the mean (average) of these numbers! (Also I don’t have them lined up in order from smallest to largest)
Answer:
[tex] \frac{5}{4} [/tex]
Step-by-step explanation:
To find the average of any amount of numbers, just add all the given numbers together and then divide by the amount of numbers given, in this case it would be :
[tex]( \frac{3}{4} + \frac{13}{5} + \frac{14}{10} + \frac{6}{24} ) \div 4[/tex]
determine the volume of a sphere if it has a radius of 5 inches
Answer:
V ≈ 523.6in³
Step-by-step explanation:
Using the second sphere volume equation results in:
4/3 x 3.14159 x 53 = 4.1866 x 125 = 523.6in3
She read a total of 497 pages in 7 days what is the mean number of pages Siriana read each day
Answer:
71 pages / day
Step-by-step explanation:
You are looking for pages per day so:
497 pages / 7 days = 71 pages/day
Sarah has private health insurance that costs $575 per month. Her new employer will provide health insurance at no cost to her. What is her health insurance worth as a benefit of employment?
Based on the above information, it can be inferred that Sarah saves $6,900 per year.
How to calculate how much Sarah saves per year in health service?Taking into account that her new employer is going to give her a free health service and that before she paid $575 for the health service monthly, to calculate her savings per year we must multiply the value of the health service by the number of months of one year (12).
$575 × 12 = $6,900Based on the above, it can be inferred that Sarah is saving $6,900 per year on health care.
Note: This question is incomplete because the is some information missing. The information is missing
How much money is Sarah saving on healthcare each year with her new employer?Learn more about health in: https://brainly.com/question/13179079
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2. If ¡2x+3 = i, where i = V-1, then which of the
following is a solution for x?
(1) x = 16
(3) x = 11
(2) x = 10
(4) x = 14
I assume you mean the equation
[tex]i^{2x+3} = i[/tex]
Since i = √(-1), we have i⁴ = 1 and so i⁵ = i. Then 2x + 3 must be some multiple of 5.
Now just check for which of the given choices that this holds:
x = 16 ⇒ 2x + 3 = 35 (yes)
x = 11 ⇒ 2x + 3 = 25 (yes)
x = 10 ⇒ 2x + 3 = 23 (no)
x = 14 ⇒ 2x + 3 = 31 (no)
HELP!!!
Which function increases at a faster rate on 0 to infinity,
f(x) = x2 or g(x) = 2x? Explain your reasoning.
=
Answer:
f(x) is faster
Step-by-step explanation:
In case it is x^2 then f(x) will be faster.
If you draw these two function in the graph. You can see that
Or you can add any value randomly and see that
Ex:
when x = 5
f(x) = 25, g(x) = 10
when x = 20
f(x) = 400, g(x) = 40
when x is 4 times larger. g(x) is 4 times larger while f(x) is 16 times larger
I need help please I don’t get it
Answer:
ask your teacher for help. learn more today.
Step-by-step explanation:
Help with this please i will give brainiest if right
Answer: 6
Step-by-step explanation:
solve the inequility 3x - 3 <9
Answer:
x<4
Step-by-step explanation:
Here, hope this helped!
A quick tip, just think that the sign is an equal sign, that helps.
Answer: [tex]x < 4[/tex]
Step-by-step explanation:
Our inequality is [tex]3x-3 < 9[/tex]
We will add 3 to both sides. (addition property of equality)
Simplify [tex]9 + 3 9+3 9+3 ~to ~12[/tex].
Then divide both sides by 3. (division property of equality)
[tex]3x[/tex]÷[tex]3 < 12[/tex]÷[tex]3[/tex]
[tex]\frac{3x}{3} < \frac{12}{3}[/tex]
Simplify [tex]312~to~4[/tex].
You told your friend that you could eat 78 of a large pizza. If you only ate 23 of what you said you could eat, what fraction of a large pizza did you eat?
Answer:
5/16
Step-by-step explanation:
Fraction of claim is 5/8
But you actually eat 1/2
Fraction of large pizza actually eaten 5/16
Hopefully this is correct and it can help you!
Steve has overdrawn his checking account by $27. His bank
charged him $15 for an overdraft fee. Then he quickly deposited
$100. What is his current balance?
To win a lottery, 7 numbers are drawn at random from a pool of 21 numbers. Numbers cannot repeat. If a person has one ticket, what is the probability that they have the winning ticket?
Answer:
the answer should be 3....this is not right btw
the probability of having a winning raffle ticket is 15%.
A filing cabinet measures 5 feet is 18 inches wide and 2 feet deep what is the volume of the filing cabinet
Answer:
15 feet
Step-by-step explanation:
From the question above,we are asked to find the volume of a cabinet with the following dimensions:
Height is five feet
Width is eighteen inches
And a depth of two feet.
Here it is quite obvious that we ate dealing with a cuboidal object since its dimensions differ from one another.
So volume of a cuboid as we all know is :
Length multiplied by width and then height
We should head straight away to the calculations, but we need to remember that the width is in inches and needs to be converted to feet
1 inch = 1/12 feet
18 inches = 18× 1/12
= 1.5 feet
L×W×H
= 1.5×5×2
= 15 feet
If a1 = 5 and 5 and an = -3an-1 then find the value of a5. WILL GET BRAINLIEST
Answer:
405
Step-by-step explanation:
Given
a₁ = 5aₙ = -3aₙ₋₁Solving
a₂ = -3a₁ = -3(5) = -15a₃ = -3a₂ = -3(-15) = 45a₄ = -3a₃ = -3(45) = -135a₅ = -3a₄ = -3(-135) = 405a_1=5
a_2=-3a_1=-3(5)=-15a_3=-3a_2=-3(-15)=45a_4=-3a_3=-3(45)=-135a_5=-3a_4=-3(-135)=405Angela needs volume of a sphere. Which formula is correct?
The diameter of the sphere is d=17
A 4/3 pi 17 cubed
B 4/3 pi 17 squared
C 4/3 pi 8.5 cubed
D 4/3 pi 8.5 squared
Answer:
C-------------------------------------------------
The lines that appear tangent are tangent. What is the value of x, to the nearest tenth.
Answer:
x ≈ 10.7
Step-by-step explanation:
Is given in the picture that x is the radius of the circle.
The radius of a circle and the tangent line to the circle form a right angle, therefore our triangle is a right triangle.
We can apply the Pythagorean Theorem to find one equation that will have one unknown x.
(x+12)² = x² +20² , use that (a+b)² = a²+b²+2ab
x²+12²+2·x·12 = x² +20², subtract x² from both sides of the equation
12² + 24x = 20², subtract 12² from both sides of the equation
24x = 20²-12², raise to power and combine like terms
24x = 256, divide by 24 both sides of the equation
x = 10.6666666..., round to the nearest tenth
x ≈ 10.7
Can someone help me? :D
answer: b and a cannot be points on the unit circle so there for the answer is b and a
option A and option D
hope it helps...!!!
In a town, 15% of the population is unemployed. what is the
total population, if number of people who are employed is
8381
Answer:
1479 people
Step-by-step explanation:
If the amount employed is 8381, that means 8381 is 85% of the population. 8381/85 = 98.6
Every 1% of the population is 98.6, so we can just do 15 x 98.6 to get 1479
Answer:
9,860
Step-by-step explanation:
100% - 15% = 85 % = 85/100
85/100 * 8381/x
85x = 838,100
838,100/85 = 9,860
Which words mean the same thing as 5/8
Answer:
c) Five out of 8 equal parts of a whole
Step-by-step explanation:
The statement "Five out of 8 equal parts of a whole" means the fraction of 5/8. Hence, option (c) is the correct answer.
Answer:
"Five out of eight equal parts of a whole"
Step-by-step explanation:
In a fraction, the numerator (top part) is saying "this number out of the number below it."
The denominator (lower part) is the number below it that we are taking the proportion out of.
A denominator is ALWAYS equal parts, so if we match up the phrase: "5 out of eight equal parts of a whole"
I really need help with this ^-^
The graph of a function is shown in the picture and the amplitude will be 6
What is trigonometry?Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.
We have a trigonometric function:
[tex]\rm y = -6\cos\left(5x\right)-3[/tex]
As we know, the range for the cosx is [-1, 1]
The maximum value of function y = -6cos(5x)—3 is 3 and minimum value is -9.
The amplitude = 6
Thus, the graph of a function is shown in the picture and the amplitude will be 6
Learn more about trigonometry here:
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Type your answer and then click or tap Done.
The number of seconds is equal to 60 times the
number of minutes. Write the direct variation
equation that represents this situation. Let xbe the
independent variable. Let y be the dependent
variable.
Answer:
See below
Step-by-step explanation:
x(x-2y)-(y-x)2
Final result :
-y2
Step by step solution :
Step 1 :
Equation at the end of step 1 :
x • (x - 2y) - (y - x)2
Step 2 :
2.1 Evaluate : (y-x)2 = y2-2xy+x2
Final result :
-y2
Answer:
y=60x
Step-by-step explanation:
Let x be the number of minutes, y be the
number of seconds
4=60x
{Direct variation}
The scatter plot with trend line below shows the data comparing wind speed and wind chill. Wind Chill (˚F) Wind Speed (mph) The trend line passes through (10, 9) and (35, 0). Write an equation for the trend line. The equation of the trend line is y = x + .
The trend line passes through (10, 9) and (35, 0) will be 9x + 25y = 315.
What is the equation of a line passing through two points?Suppose the given points are (x₁, y₁) and (x₂, y₂), then the equation of the straight line joining both two points is given by
[tex]\rm (y - y_1) = \dfrac{y_2 - y_1}{x_2 - x_1} (x -x_1)[/tex]
The scatter plot with the trend line below shows the data comparing wind speed and wind chill. Wind Chill (˚F) Wind Speed (mph). The trend line passes through (10, 9) and (35, 0).
Write an equation for the trend line.
(x₁, y₁) → (10, 9)
(x₂, y₂) → (35, 0)
Then we have
y - 9 = -9/25(x - 10)
25y - 225 = -9x + 90
9x + 25y = 315
Learn more about straight-line equations here:
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Casey is buying snacks for a class trip. She has 16 snacks left over from the last trip. She buys snacks by the case to get a good price. Each case holds 24 snacks. How many cases will she have to buy if she wants to have a total of 160 snacks?
Answer:
Your answer is 10
Step-by-step explanation:
160 devided by 16 = 10
Given a+b=7 and a-b=3; find the following.
3^a÷3^b
please answer question below asap!!
Answer:
44 boots
Step-by-step explanation:
24/6=4
that means we have to multiply all the numbers by 4 as well
2*4=8
3*4=12
24+8+12=44
HELP!!!!!!!! Select an expression that id equivalent to 4squareroot of 2x^2 • 4squareroot of 2x^3
Answer:
B
Step-by-step explanation:
[tex]\sqrt[4]{2x^2} *\sqrt[4]{2x^3} =(2x^2)^{1/4}*(2x^3)^{1/4}\\= 2^{1/4}*(x^2)^{1/4} *2^{1/4} * (x^3)^{1/4}\\[/tex]
combine like terms
[tex]= 2^{2/4} *x^{2/4}*x^{3/4}\\= 2^{2/4} * x^{5/4}[/tex]
these steps use exponent laws
a few key ones i used:
(x^y^z) = x^(y*z)
x^y * x^z = x^(y+z)
let me know if you have any questions!
On Thursday afternoon at camp, Nora played basketball and went swimming before dinner. She started playing basketball at 2:50 P.M. and played for 1 hour and 45 minutes. Then she swam for 50 minutes. Dinner lasted for 1 hour. What time did dinner end?
Answer:
6:25 PM
Step-by-step explanation:
Start of dinner
2:50 PM + 1:45 + 0:50
convert it to minutes
2:50PM + 60+ 45 + 50
= 2:50Pm + 60 + (50 + 10) + (45 - 10)
= 4:50Pm + 35
= 4:50PM + 10 + 25
= 5:25PM
End of dinner
5:25PM + 1 = 6:25PM
Find the midpoint of the line segment with the given endpoints
(4,-6), (9, 6)
Answer:
I think it's number 5 or (5,8)
Step-by-step explanation:
the length of the hypotenuse of a 45°-45°-90° triangle with a leg of 12, what the length
Answer:
The length of the other two legs are 6√2.
since the hypotenuse is one of the legs multiplied by √2.
dividing the hypotenuse by √2 will get the length of one leg. since it is a 45 45 90 triangle, the length of the two legs are the same.
12/√2= 12√2/2= 6√2
Slope
y = 4x + 3
y = -1x -2
y = -6x - 3
y = -1x + 2
=
#1
#2
Х
Х
Assuming your asking for two sets of systems of equations.
#1: [tex]{y,x}={-1,-1}[/tex]
Steps:
Solve by Substitution :
// Solve equation [2] for the variable x
[2] x = -y - 2
// Plug this in for variable x in equation [1]
[1] y - 4•(-y -2) = 3
[1] 5y = -5
// Solve equation [1] for the variable y
[1] 5y = - 5
[1] y = - 1
// By now we know this much :
y = -1
x = -y-2
// Use the y value to solve for x
x = -(-1)-2 = -1
Solution :
{y,x} = {-1,-1}
2: [tex]{y,x}={3,-1}[/tex]
Steps:
Solve by Substitution :
// Solve equation [2] for the variable x
[2] x = -y + 2
// Plug this in for variable x in equation [1]
[1] y + 6•(-y +2) = -3
[1] -5y = -15
// Solve equation [1] for the variable y
[1] 5y = 15
[1] y = 3
// By now we know this much :
y = 3
x = -y+2
// Use the y value to solve for x
x = -(3)+2 = -1
Solution :
{y,x} = {3,-1}