3 years ago

If 2s +10r = 2(2s-5r) = 42, then what is the value of r?

Mathematics

1 answer:

Lesechka [4]3 years ago

5 0

R=7/5
You can list two equations:
2s+10r=42 and 4s-10r=42.
Then try to delete S, you will get r

You might be interested in

Is the expression 4 - x the same as x – 4? Explain

jarptica [38.1K]

Answer:

Yes

Step-by-step explanation:

The order of the factors does not alter the product

4 0

3 years ago

Read 2 more answers

A rectangular room measures 18 ft by 37 ft. How many

Lera25 [3.4K]

Step-by-step explanation:

the area of a rectangle is length × width.

in our case

37 × 18 = 666 ft²

so, we need 666 ft² of tiles.

8 0

2 years ago

Read 2 more answers

PLEASE HELP ME WITH THIS

tatuchka [14]

Answer:

write your self.........

3 0

3 years ago

For f(x) = -4x + 2, find f(x) when x = -1

Damm [24]

b...............................................................................

5 0

3 years ago

A company makes gift boxes in different sizes following the pattern shown below. What is the volume of the fourth gift box to th

AVprozaik [17]

The volume of the fourth box is of 410.1 cubic inches.

---------------------

The volume of a rectangular prism is given by the base area multiplied by the height, that is:

$V = A_bh$

---------------------

For the first three boxes, the height is constant at 9 inches.
At the base, the edge length is multiplied by 1.5 each time, as $\frac{4.5}{3} = \frac{3}{2} = 1.5$ , thus, for the fourth box, the edge length, in inches, will be of $4.5 \times 1.5 = 6.75$

---------------------

Square base, of length 6.75 inches, thus:

$A_b = 6.75^2 = 45.5625$

Height of 9 inches, thus $h = 9$ and:

$V = A_bh = 45.5625(9) = 410.1$

The volume of the fourth gift box will be of 410.1 cubic inches.

A similar problem is given at brainly.com/question/23756783

4 0

2 years ago