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3 years ago

15

Now that you've found the base of the exponential function f(x)=0.5x−2 , does this function represent growth or decay? Question

2 options: growth decay

1 answer:

Mars2501 [29]3 years ago

5 0

Answer: It represents decay.

Step-by-step explanation:

Because 0.5 is less than 1, it is constantly decaying because multiplying by a fraction of a number gives you less than what you started with.

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JEEZUS PLEASE HELP ME PEOPLE KEEP TROLLING ME AND NONE OF MY ANSWERS HAVE BEEN CORECTLY ANSWERED, I WILL GIVE MONEY FOR FLIPS SA

Savatey [412]

Answer:

14. 6 x $10^{17}$

15. 28.615 x $10^{10}$

16. I'm so sorry, I'm not sure!

17. 1.26 x $10^{10}$

18. 1.639 x $10^{-8}$

19. 2.025 x $10^{17}$

<em>Hope that helps! I'm sorry if it's wrong, and sorry about all the trouble that has been brought upon you!</em>

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Step-by-step explanation:

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3 years ago

the total entry price of the top of the Eiffel Tower during the low season of 95 Euros for 4 students and five teachers the tota

tamaranim1 [39]

Answer:

74.30

Step-by-step explanation:

Let s = entry price for a student

Let t = entry price for a teacher

4s +5t = 95

6s+10t = 173

I will use elimination to solve this problem.

Multiply the first equation by -2

-2(4s +5t) = -2*95

Distribute

-8s - 10t = -190

Add this equation to the second equation to eliminate t

-8s - 10t = -190

6s+10t = 173

----------------------

-2s = -17

Divide by -2

-2s/-2 = -17/-2

s = 8.50

Now we need to find t

4s +5t = 95

Substitute s=8.50

4(8.50) +5(t) = 95

34 +5t = 95

Subtract 34 from each side

34-34 +5t = 95-34

5t = 61

Divide by 5

5t/5 = 61/5

t = 12.20

We want to find the cost for 3 students and 4 teachers

3s+4t

3(8.50) + 4(12.20)

25.50 + 48.80

74.30

6 0

4 years ago

Perform the indicated operations, and then answer the question.

marin [14]

Answer:

i pretty sure its C.

Step-by-step explanation:

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3 years ago

Read 2 more answers

Which of the following angle relationships are correct?

g100num [7]

Answer:

B but am not sure tho it's probably A

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3 years ago

The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 mi

dangina [55]

Answer:

A.0.4477

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 16.3, \sigma = 4.2$

What is the probability that a randomly selected exam will require between 14 and 19 minutes to grade?

This probability is the pvalue of Z when X = 19 subtracted by the pvalue of Z when X = 14. So

X = 19

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{19 - 16.3}{4.2}$

$Z = 0.64$

$Z = 0.64$ has a pvalue of 0.7389.

X = 14

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{14 - 16.3}{4.2}$

$Z = -0.55$

$Z = -0.55$ has a pvalue of 0.2912

0.7389 - 0.2912 = 0.4477

So the correct answer is:

A.0.4477

7 0

3 years ago