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3 years ago

Pouvez vous maider pour la questuon deux merci

Mathematics

1 answer:

Vanyuwa [196]3 years ago

6 0

quelle est ta question?

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The correct answer is c. :)

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The distance between two stars is 10^m=10,000,000,000,000,000 km. What is the value of m?

skad [1K]

Count the number of zeros past the number 10. That is the value of M.

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3 years ago

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Maria drove to a business appointment at 50mph in the morning. Her average speed on the return trip in the afternoon was 40 mph.

MakcuM [25]

Answer:

Distance to appointment point = 5 miles

Step-by-step explanation:

Let s be the distance to the appointment point,

We have Maria drove to a business appointment at 50mph in the morning.

Time taken in the morning

$t_m=\frac{s}{50}=0.02s$

Her average speed on the return trip in the afternoon was 40 mph.

Time taken in the afternoon

$t_a=\frac{s}{40}=0.025s$

Given that the return trip took 1/4hr longer because of traffic.

That is

$t_a-t_m=\frac{1}{4}hr=0.025hr$

Substituting

$t_a-t_m=0.025hr\\\\0.025s-0.02s=0.025\\\\s=5miles$

Distance to appointment point = 5 miles

7 0

3 years ago

Which function has an inverse that is also a function? {(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)} {(–4, 6), (–2, 2), (–1, 6)

9966 [12]

Answer:

1. {(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)}

Step-by-step explanation:

Info to consider:
Inverse of a function: (x, y) → (y, x)
Definition of a function: Every input will have exactly one output.

Let's analyze the functions:

1. {(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)}

It has unique y- values, its inverse won't have repeat x-values, so the inverse is also a function

2. {(–4, 6), (–2, 2), (–1, 6), (4, 2), (11, 2)}

It has repeat y values of 6 and 2. Its inverse it is going to cause repeat input numbers with different output. This won't be a function

3. {(–4, 5), (–2, 9), (–1, 8), (4, 8), (11, 4)}

It has repeat y values of 8. Its inverse it is going to cause repeat input numbers with different output. This won't be a function

4. {(–4, 4), (–2, –1), (–1, 0), (4, 1), (11, 1)}

It has repeat y values of 1. Its inverse it is going to cause repeat input numbers with different output. This won't be a function

So the first set of data is the only correct one

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3 years ago

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