3 years ago

Solve the System using elimination. 5x-2y=15 7x+7y=-28

Mathematics

1 answer:

steposvetlana [31]3 years ago

8 0

Answer:

x=1 y=-5

Step-by-step explanation:

7(5x-2y=15) ---> 35x-14y=105

2(7x+7y=-28) --> + <u>14x+14y=-56</u>

49x=49 --->x=1

5(1)-2y=15 ---> 5-2y=15 ---> -2y=10 ---> y=-5

You might be interested in

Makayla and Madison are combining their fabric to see how much they have in all. If Makayla has 1 1/2 yards of fabric and Madiso

IgorLugansk [536]

Estimating Fabric Yardage Needs for Common Misses Garments

Garment Fabric Width 35-36 inches Fabric Width 52-54 inches

Blouse, capped sleeves 2 yards 1-3/8 yards

Camisole, bias cut 1-1/3 yards 1-1/8 yards

Dress, short sleeves with straight skirt 4-1/4 yards 2-5/8 yards

Dress, long sleeves with straight skirt 5 yards 3-1/8 yards

5 0

3 years ago

Read 2 more answers

You have 6 bracelets and 15 necklaces. Find the number of ways you can wear one bracelet and one necklace

KonstantinChe [14]

The answer would be 90

5 0

3 years ago

What is the distance between (-6,4) and (-8, 6)?

Tatiana [17]

Answer:

$\sqrt{8}=2\sqrt{2}$

Step-by-step explanation:

by using well known formula, distance on XOY plane

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\=\sqrt{(-8-(-6))^2+(6-4)^2}\\=\sqrt{(-2)^2+(2)^2}$

8 0

3 years ago

Fiona rolls a fair dice 192 times.<br> How many times would Fiona expect to roll a three?

kap26 [50]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Which is the decimal expansion of 7 Over 22

Fed [463]

Answer: 0.31

Step-by-step explanation:

7/22 is 0.31

6 0

3 years ago

Read 2 more answers