Answer:
B. 3.34s
Step-by-step explanation:
Find t when the object hit the ground, h(t)=0.
h(t)=-16t²+178
0=-16t²+178
16t²=178
t²=11.125
t=√11.125=3.33541601603s
2b) stretching
2c) it is stretched by a factor of 2 of the parent function f(x)=x
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Answer:
2 x 2 + 8 + 3 x 2 + 4x - 10
4 + 8 + 8 + 6 + 4x - 10
26 + 4x - 10
20 + 4x
The answer is 20 + 4x
1.) Solve for length b.
The simpler method is to use the Pythagorean theorem. If
, then this means that
.
Plug in the values:

--> 
So this means that b is the square root of 72, which is 8.49
2.) Solve for ∠A.
Let's refer to the law of sines. If
, then this means we can cross multiply. Since A is the value we are solving for, the equation should be written out like this:

--> 
A is 39.52°
3.) Solve for ∠B.
This is the easiest one. The sum of all three angle measures in a triangle add up to 180°. We already know that one of the angles is a right angle and the other 39.52°.
39.52 + 90 = 129.52
180 - 129.52 = 50.48
∠B is 50.48°.