I think it D cause 30(cos(30x)+14=-16
Your dividing by 30
your 180 (which is degrees) is
radians. As the cosine function is periodic with period 2 we get
B. looks like the way to go.
Answer:
Option A,
± 
Step-by-step explanation:
<u>Step 1: Add 29 to both sides</u>



<u>Step 2: Square root both sides</u>

± 
Answer: Option A,
± 
Answer:
Suzie's speed was 3.6 mph
Step-by-step explanation:
we know that
The speed is equal to divide the distance by the time
Let
s ----> the speed in mph (miles per hour)
x ----> the distance in miles
y ----> the time in hours
so

Find Suzie's speed
we have


substitute

Convert mixed number to an improper fraction

substitute

<span> x²+4x-1 - (3x - 7) = x² + 4x - 1 - 3x +7 = x² + x + 6
</span>x² + x + 6 should be added to 3x - 7 to make x²+4x-1.