3 years ago

Let F(x)=3x-1,h(x)=-x+5 find (f•h)(-2)

Mathematics

1 answer:

vovangra [49]3 years ago

4 0

Answer:

Dont mind me if i am wrong!

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Joe heard from a reliable source that only 22% of people actually sleep 8 hours or more per night. You do a survey and find 58 o

Juliette [100K]

Answer:

95% Confidence interval: (31.32%,47.04%)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 148

Number of people who sleep for 8 hours or longer, x = 58

$\hat{p} = \dfrac{x}{n} = \dfrac{58}{148} = 0.3918$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.3918\pm 1.96(\sqrt{\dfrac{0.3918(1-0.3918)}{148}})\\\\ = 0.3918\pm 0.0786\\\\=(0.3132,0.4704)=(31.32\%,47.04\%)$

(31.32%,47.04%) is the required 95% confidence interval.

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3 years ago

Using the numbers -4, 10, 8, 2, -3, -5, create two expressions that equal 6.

blondinia [14]

Expressions:

10 + (-4)
-4 + 8 + 2

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3 years ago

The coordinates of point Care A. (3,-1) B. (1, -3) C. (3,1) D. (-3,1) E. (-3,-1)

Mars2501 [29]

D (-3,1) hopes this helps

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3 years ago

Solve the equation. 8x= 72

BigorU [14]

Answer:

X=9

You divide 8 in each side and you will get x=9

Step-by-step explanation:

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3 years ago

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Alexandra [31]

Answer:

$x = 135(being \: opposite \: angles \: of \: a \: paralleogram)$

Step-by-step explanation:

x =135(being opposite angles of a parallelogram)

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2 years ago