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3 years ago

Find the sum of the first 25 terms of the arithmetic sequence.

Mathematics

1 answer:

Marta_Voda [28]3 years ago

3 0

Answer:

Step-by-step explanation:

$\frac{n}{2}*(a+l)=\frac{25}{2}*(100+220)\\\\=\frac{25}{2}*320=\frac{25*320}{2}\\\\=25*160=4000$

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jim walks at an average rate of 4 miles per hour. at this rate how long will it take jim to walk 10 miles?

Firdavs [7]

It would take him 2.5 hrs because when you divide 10 by 4 that's what you get

7 0

3 years ago

Read 2 more answers

At a grocery store, the price of a watermelon is determined by how many pounds the watermelon weighs. The price of a watermelon

Alexxx [7]

Answer:

$p=0.60w$

Step-by-step explanation:

Let

p ----> the price of a watermelon in dollars

w ---> the weight of a watermelon in pounds

In this problem we have a proportional relationship

Remember that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem

$p=kw$

The value of the constant of proportionality k is the same that the unit rate

Find out the unit rate

Divide the total cost by the total weight

$k=\frac{4.38}{7.3}=\$0.60\ per\ pound$

substitute in the equation

$p=0.60w$

7 0

3 years ago

The solution for y on problem y=11+4x

Ymorist [56]

I think you are missing part of the problem. If you had another equation or a value for x you could solve it.

4 0

3 years ago

Solve the system of equations algebraically. Show all of your work.<br> y= x^2 + 2x<br> y= 3x +30

QveST [7]

Answer:

See attached below

Step-by-step explanation:

4 0

3 years ago

Mai's water bottle had 24 ounces in it. After she drank x ounces of water, there were 10 ounces left.

nirvana33 [79]

Answer:

24 - X = 10

Step-by-step explanation:

Given that Mai's water bottle had 24 ounces in it. After she drank x ounces of water, there were 10 ounces left, in order to determine the equation that represents this situation, the following reasoning has to be made:

Since the bottle has 24 ounces of liquid, that is its initial content, from which an amount X is subtracted, after which 10 ounces of water remain. That is, 24 - X = 10.

Thus, this equation is solved in the following way:

24 - X = 10

24 = 10 + X

24 - 10 = X

14 = X

8 0

3 years ago