You can do this by replacing x = -2y + 10 in second equation and solving for y then plug this value of y in first equation to find x then use these values of x and y in last equation to find zSHOW FULL ANSWER
Look at the picture.

We have the right triangle x, y and r. From the Pythagorean theorem we have:

We have the point

Substitute:


Answer:
Answer is B ( 314.9 m2)
Step-by-step explanation:
A= H(B)/2
A= 25.6(24.6)/2
A= 314.88
Answer:
She can buy 62 smoothies
Step-by-step explanation: