Solve the system of equations by adding or subtracting. 3x + y = 13
2x + y = 8

The solution of the system is (, ).

The solution of the system is (5, -2)

Step-by-step explanation:

I solved by substitution:

y = 13 - 3x

Then, substitute y = 13 - 3x into 2x + y = 8

You will get 13 - x = 8

Evaluate this to get x = 5

After this, substitute x = 5 into y = 13 - 3x

This will result in getting y = -2

x = 5, y = -2

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation: