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zmey [24]
3 years ago
14

Evaluate x2 + 14 for x = –5.

Mathematics
2 answers:
arlik [135]3 years ago
8 0

Answer:

Step-by-step explanation:

(-5)^2 +14= 39

algol133 years ago
5 0

Answer: A) JUST TOOK THE TEST

Step-by-step explanation:

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Suppose that we are testing a coin to see if it is fair, so our hypotheses are: H0: p = 0.5 vs Ha: p ≠ 0.5. In each of (a) and (
aleksley [76]

Answer:

H_0: p = 0.5\\H_a: p \neq 0.5

a. We get 56 heads out of 100 tosses.

We will use one sample proportion test  

x = 56

n = 100

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{56}{100}

\widehat{p}=0.56

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                       =\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{100}}}

                                       =1.2

refer the z table for p value

p value = 0.8849

a.  We get 560 heads out of 1000 tosses.

We will use one sample proportion test  

x = 560

n = 1000

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{560}{1000}

\widehat{p}=0.56

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                       =\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}

                                       =3.794

refer the z table for p value

p value = .000148

p value of part B is less than Part A because part B have 10 times the number the tosses.

6 0
3 years ago
I don’t understand this
dimaraw [331]

Answer: 3:1

Step-by-step explanation:

5 0
3 years ago
4 7/12 + 2 1/12 what is the estimate answer
Pani-rosa [81]
4 \frac{7}{12} =  \frac{12*4+7}{12} =  \frac{55}{12}  \\  \\ 2 \frac{1}{12} =  \frac{2*12+1}{12} =  \frac{25}{12}  \\  \\  \frac{55}{12} +  \frac{25}{12} =  \frac{80}{12}  \\  \\  \frac{80 :4}{4:4}  =  \frac{20}{3}
3 0
4 years ago
Read 2 more answers
Factor completely and then place the factors in the proper location on the grid. 81a2 + 36a + 4
gizmo_the_mogwai [7]
They are all perfect squares
(9x+2)(9x+20
(9x+2)^2
6 0
3 years ago
Read 2 more answers
Need help, please, please.
Ber [7]
-66 is the 27th term.

You have a function in terms of n. Recall that n is the nth term in the sequence.
Substitute n = 27 into the equation to find the 27th term.

a₂₇ = -10 + (27 + 1)(-2) = -10 + (28)(-2) = -10 - 56 = -66
3 0
3 years ago
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