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mariarad [96]
3 years ago
15

How do I find f(-87) if

Mathematics
2 answers:
lukranit [14]3 years ago
8 0
Uhhh no
Clue honestly
natima [27]3 years ago
3 0

Answer:

O.o

Step-by-step explanation:

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I want to visit a friend that lives 200 miles away. Gas is $4 a gallon. My car gets 50 miles every 2 gallons of gas. How can I s
Pavel [41]
If you are trying to figure out how much it will cost:
8 x 4 = 32 
Cost of gas = $32 
3 0
3 years ago
Suppose that a market research firm is hired to estimate the percent of adults living in a large city who have cell phones. 500
Alborosie

Answer:

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 500, \pi = \frac{421}{500} = 0.842

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 - 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.81

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 + 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.874

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

6 0
3 years ago
What is 2(x-3) = 14<br> X= ?
HACTEHA [7]

Answer:

X=4 hope this helped :)

Step-by-step explanation:

2(x-3)=14

2x-6=14

2x= 14-6

2x=8

x= 4

8 0
3 years ago
Which of the graphed systems share the same solution set?
TEA [102]

It is the graph where the two lines intersect, when they intersect there is a point where they connect, and that is your answer

3 0
3 years ago
Read 2 more answers
Halp me :&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;​
lisabon 2012 [21]

Answer:

4^2+2^2, 5^2, 6^2-6

Step-by-step explanation:

4 to the power of 2 is 16 and 2 to the power of 2 is 4. 16+4 is 20.

5 to the power of 2 is 25 which is greater than 20.

6 to the power of 2 is 36 minus 6 is 30 which is greater than 25 and 20.

7 0
3 years ago
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