Answer:
a=-4, b=-4. (-4, -4).
Step-by-step explanation:
-3a+7b=-16
-9a+5b=16
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-3(-3a+7b)=-3(-16)
-9a+5b=16
---------------------------
9a-21b=48
-9a+5b=16
------------------
-16b=64
b=64/-16
b=-4
-3a+7(-4)=-16
-3a-28=-16
-3a=-16+28
-3a=12
a=12/-3
a=-4
Answer:
a)x²y²+2xy²z+y²z²-2x²y²z²
b) -8
Step-by-step explanation:
foil the squared to get:x²y²+2xy²z+y²z²
and then plug in the numbers and chug along
hope this helps
Answer:
<u>37.68</u>
Step-by-step explanation:
Circumference = Diameter x pi
Diameter = 12 feet
12 x 3.14 = 37.68
The circumference of the pool is 37.68 feet.
Answer:
Every fifth rose in each row of roses
Step-by-step explanation:
