Answer:
Gave’s speed: 70 mph
Elsa’s speed 77 mph
Step-by-step explanation:
d = rt (distance = rate(speed) * time)
Gave d = 2.2r
Elsa d = (r+7)2
Distance was the same for both.
2.2r = 2r + 14
2.2 - 2r = 14
0.2r = 14
r = 14/0.2
r = 70
Hello there!
If x = -3
Calculate x^2 - x
We need to replace x by 3
3^2 - 3
=3 * 3 - 3
= 9 - 3
= 6
I hope this helps!
Distance between coordinates = √(y2-y1)² + (x2-x1)²
d = √(9-2)² + (1-7)²
d = √7² + 6²
d = √85
d = 9.22 units
In short, Your Answer would be: 9.22 units
Hope this helps!
9514 1404 393
Answer:
- zeros: t = 1, t = -1/2
- no: the domain of the function is t ≥ 0
- 8 feet
Step-by-step explanation:
The zeros are the values of t that make the factors zero.
1 -t = 0 ⇒ t = 1
8 +16t = 0 ⇒ t = -8/16 = -1/2
The equation is used to model height after the ball is thrown. We don't expect it to be a good model before the ball is thrown (t < 0), so the zero in that region is extraneous.
Only the positive zero is in the function's domain, so that is the only one that is meaningful.
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When t = 0 (at the time the ball is thrown), the function value is ...
h(0) = (1 -0)(8 +0) = 8
The ball is thrown from a height of 8 feet.
Answer:
b is the correct answer i know it is