4 years ago

Use the elimination method to solve the system of equations 2x+3y=8 x-y=9

Mathematics

1 answer:

babunello [35]4 years ago

6 0

Answer:

Step-by-step explanation:

Answer: x = 7 and y = -2

Step-by-step explanation:

2x +3y = 8 ----------------(1)

x-y = 9 ----------------------(2)

multiply (2) by 2

2x-2y = 18--------------------(3)

subtract (2) from (3)

-5y = 10

Divide bothside by -5

y = -2

Similarly, multiply (2) by 3

3x-3y = 27-----------------------(4)

add (1) and (4) together

5x = 35

Divide bothside by 5

x= 7

Therefore, x =7 and y= -2

You might be interested in

What is the area of this cross-section of this rectangular prism? Enter your answer in the box.

Andreyy89

Answer:

160 trust me

Step-by-step explanation:

we multiply the length by the width which is the formula of finding rectangular areas'

7 0

3 years ago

What's the nearest hundred thousand to 491,852

kirza4 [7]

500,000 round up from 491,852 to 500,000

3 0

3 years ago

Read 2 more answers

A deli served 1,288 sandwiches in 4 weeks. If it served the same number of sandwiches each day, how many sandwiches did it serve

Serggg [28]

(write this) The deli served 322 sandwiches in one or each day. I found my answer by dividing 1288 by 4 my final answer was 322. Just to make sure this correct I multiplied 322 × 4.

3 0

3 years ago

A whole number is multiplied by six. What must the answer be?

Delvig [45]

Answer:

C is the correct one

Step-by-step explanation:

I’ve done it before

7 0

3 years ago

Read 2 more answers

Solve for b2 in A = h ( b1 + b2 ), if A = 16, h = 4, and b1 = 3.

nlexa [21]

Divide 4 by both sides
Then you get 4=3+b2
Then subtracts 3 from four
You get 1=b2

8 0

3 years ago

Read 2 more answers