Question

Where to Dig: The dinosaur's

tail bones are at the solution

point to the system of

equations below.

-2x - 7y = -250

4x - y = 140

Every time you click a point

using the CPS, the equations

below will update. Remember

the solution is the point that

makes both equations true.

-2( x ) - 7(y) = 250 X

4(x ) - (y) = 140 X

Answer 1

x=41, y=24

Explanation:

Given data

We are given the expression

-2x - 7y = -250

4x - y = 140

Multiply eqn 1 by 1 and eqn 2 by 7 and minus we have

-2x - 7y = -250

- 28x-7y= 980

-30x+0= -1230

-30x=-1230

30x=1230

x= 1230/30

x=41

Put x=41 in eqn 1

-2(41) - 7y = -250

-82-7y= -250

-7y= -250+82

-7y=-168

7y=168

y=168/7

y= 24