+0

# system

0
37
2

If w, x, y, and z are real numbers satisfying:

w+x+y = -2,

w+x+z = 4,

w+y+z = 19

x+y+z = 16

what is wx + yz?

Jun 26, 2022

### 1+0 Answers

#1
+2222
+1

Adding everything gives us: $$3(w+x+y+z) = 37$$

This means $$w + x + y + z = {37 \over 3}$$.

Now, you can use this to solve for w, x, y, and z, and compute the answer.

Can you take it from here?

Jun 27, 2022