Answer:
4 and -4 are both the square roots of 16
Step-by-step explanation:
The number 16 has two square roots which are 4 and -4
hope this helps!
11. 5/6
12.146/158=73/79
y = 9 cos [(⅕pi)x]
Amplitude = 9
Period = 10
2pi/10 = pi/5
=5(-2w)-5x4
=-5x2w-5x4
answer: =-10w-20
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