3 years ago

Luna I made the trip to the moon in . In this activity, you will determine the average speed of Luna I using division.

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Hi! Did you mean to add a picture to your comment?

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One number is four more than four times another. If their sum is decreased by six, the result is twenty-eight. Find the numbers.

Vsevolod [243]

let "one number" = x, and "another" = y

x = 4y + 4

(x + y) - 4 = 28

Plug in 4y + 4 for x

4y + 4 + y - 4 = 28

Simplify. Combine like terms

5y = 28

Isolate the y. Divide 5 from both sides

y = 28/5

y = 5.6

Plug in 28/5 for y.

x = 4y + 4

x = 4(28/5) + 4

Simplify

x = 22.4 + 4

x = 26.4

x = 26.4, y = 5.6

hope this helps

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3 years ago

The sales tax in a major city is 7%. Find the cost, including the tax charged on a purchase of $200.

Vitek1552 [10]

Answer:

$214

Step-by-step explanation:

200*0.07 = 14, 200 + 14 = 214

6 0

3 years ago

the volume V of a gas at a constant temperature varies inversely with the pressure P. when the volume is 100 cubic inches the pr

fiasKO [112]

Answer:

The pressure is $20\ psi$

Step-by-step explanation:

we know that

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

In this problem we have

$V*P=k$

where

V is the volume of a gas at a constant temperature

P is the pressure

we have

For $V=100\ in^{3}$ , $P=25\ psi$

step 1

Find the value of k

substitute the values of V and P

$100*25=k$

$k=2,500$

The equation is equal to $V*P=2,500$

step 2

Find the pressure when the volume is 125 cubic inches

For $V=125\ in^{3}$

substitute in the equation and solve for P

$125*P=2,500$

$P=2,500/125=20\ psi$

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3 years ago

Pls help i dont know this one

telo118 [61]

Answer:

The answer is A :)

Step-by-step explanation:

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3 years ago

a person's rectangular dog pen for his dog must have an area of 300 square feet also the length must be 40 feet longer than the

Tema [17]

The with should be 7.5 feet

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3 years ago