3 years ago

If 4m-7n=10 and 2m+2n=4, what is the value of 2m-9n?

1 answer:

3 0

4m - 7n = 10
2m + 2n = 4 - multiply everything by -1.

4m - 7n = 10
-2m - 2n = -4 Add the 2 equations

(4m - 7n = 10)
+(-2m - 2n = -4)
-------------------------
2m - 9 n = 6.

The value of 2m - 9n would be 6.

You might be interested in

A money market account is a collection of stock and bonds true or false

Pepsi [2]

Answer:

A money market fund is a type of mutual fund that invests in high-quality, short-term debt instruments and cash equivalents.

5 0

2 years ago

Read 2 more answers

Erin's water bottle holds 600 ml of water.dylans water bottle holds 1 l of water. whose water bottle has the greater capacity?ho

Lapatulllka [165]

Dylans water bottle is greater by 400 ml

4 0

3 years ago

There are 5 different French books and 5 different Spanish books. How many ways are there to arrange them on a shelf if

hram777 [196]

B because french and Spanish are alternate soo they grouped and spanish goes second and begin with french book

6 0

3 years ago

What happens to the value?

Fiesta28 [93]

Answer:

D.) c is multiplied by 4

Step-by-step explanation:

$c = \dfrac{8a^3}{b}$

If a is doubled, it becomes 2a. If b is doubled, it becomes 2b. Now we replace a with 2a and b with 2b and simplify.

$c = \dfrac{8(2a)^3}{2b}$

$c = \dfrac{8 \times 8a^3}{2b}$

$c = \dfrac{4 \times 8a^3}{b}$

$c = 4 \times \dfrac{8a^3}{b}$

Answer: D.) c is multiplied by 4

4 0

3 years ago

A soup can has a diameter of 8 cm and a height of 12 cm. What is the volume of the soup can? Use 3.14 for Pi. A cylinder has a h

Alik [6]

Answer:

602.88

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers