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Law Incorporation [45]
3 years ago
12

A pyrotechnician plans for two fireworks to explode together at the same height in the air. They travel at speeds shown below. F

irework B is launched 0.25 s before Firework A. How many seconds after Firework B launches will both fireworks​ explode?
Mathematics
1 answer:
Anastasy [175]3 years ago
7 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
<span>By the time firework a has been launched, firework b has already been launched for 0.25 seconds, so if we treat the two as equations, then

a = 220 (t)
b =</span> 220 (t) +  220 (.25)

<span>And we want to know when these two equal eachother, as that's they will both detonate.

220t = 200 t + 200 (.25)
20t = 50 
t = 2.5</span>
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Katena32 [7]

Answer:

f^{-1}(x) = \frac{x+8}{8}

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Domain of f -1(x): All real values.

Range of f -1(x): All real values

Step-by-step explanation:

We are given the following function:

f(x) = 8x + 8

Since it is a line, we have that both the domain is the range is the real set.

Inverse function:

The domain of the inverse function is the range of the original function, and the range of the inverse function is the domain of the original function.

Finding the inverse function:

Exchange x and y in the original function, and isolate y. So

Original

y = 8x + 8

Exchanging:

x = 8y - 8

Isolating y:

8y = x + 8

y = \frac{x+8}{8}

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3 years ago
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W ^10

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Answer:

255,024

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