2 years ago

X + y = 21 3x – 2y = -12

Mathematics

2 answers:

kondaur [170]2 years ago

8 0

Answer:

x = 6 y = 15

Step-by-step explanation:

If this is simultaneous equations

x+y=21

3x-2y= -12

-3(x+y=21)

1(3x-2y= -12)

-3x -3y= -63

3x-2y= -12

-5y= -75

y= -75/-5

y= 15

x+y=21

x+15=21

x=21-15

x=6

Varvara68 [4.7K]2 years ago

7 0

This is the answer !!!!!!!!!!!

You might be interested in

Q) The distance between points A(2,1) and B(2,4) is ___ units.

madreJ [45]

Answer:

3 or (0,3)

Step-by-step explanation:

8 0

2 years ago

Omg pls help it’s my last question and i’m timed

inysia [295]

2 kilograms= 2000 grams

8 0

3 years ago

Read 2 more answers

Which quadrilateral has equal diagonals

Luba_88 [7]

Answer: D

Step-by-step explanation:

All of it’s angles are equal

3 0

3 years ago

Read 2 more answers

A proportion is an equation that states two _____ are equal.

Dafna1 [17]

Proportions have two fractions so the answer is ratios.

Hope it helps :)

5 0

3 years ago

Read 2 more answers

A scientist studies a pod of humpback whales to determine the

Alborosie

Answer:

C. A pod of humpback whales

The scientists is trying to draw a conclusion about all humpback whales by looking at the behaviors of a pod of humpback whales.

6 0

3 years ago