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Snowcat [4.5K]
3 years ago
12

4\3(-12)+8=

Mathematics
1 answer:
fiasKO [112]3 years ago
6 0

Answer:

-24

Step-by-step explanation:

4/3(-12)-8

1.3(-12)‐8

-24

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Triangle ABC and DEF are congruent. Find x.
miv72 [106K]

Δ ABC ≡ ΔDEF

⇒ ∠DEF = ∠ABC

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<u>Solve x:</u>

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William earns $13 an hour working at a movie theater last week he worked h hours at the concession stand and three times as many
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X
erica [24]

Answer: 67.725feet²

Step-by-step explanation:

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= 1/2 × nsr

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7 0
3 years ago
Help due tonight<br> plssss
postnew [5]

Answer:

Perpendicular to base

Step-by-step explanation:

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6 0
3 years ago
According to a polling​ organization, 24% of adults in a large region consider themselves to be liberal. A survey asked 200 resp
Varvara68 [4.7K]

Answer:

z=\frac{0.375 -0.24}{\sqrt{\frac{0.24(1-0.24)}{200}}}=4.47  

Now we can calculate the p value based on the alternative hypothesis with this probability:

p_v =P(z>4.47)=0.00000391  

The p value is very low compared to the significance level of \alpha=0.05 then we can reject the null hypothesis and we can conclude that the true proportion of people liberal is higher than 0.24

Step-by-step explanation:

Information given

n=200 represent the random sample taken

X=75 represent the number of people Liberal

\hat p=\frac{75}{200}=0.375 estimated proportion of people liberal

p_o=0.24 is the value that we want to test

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to verify if the true proportion of adults liberal is higher than 0.24:

Null hypothesis:p \leq 0.24  

Alternative hypothesis:p > 0.24  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info given we got:

z=\frac{0.375 -0.24}{\sqrt{\frac{0.24(1-0.24)}{200}}}=4.47  

Now we can calculate the p value based on the alternative hypothesis with this probability:

p_v =P(z>4.47)=0.00000391  

The p value is very low compared to the significance level of \alpha=0.05 then we can reject the null hypothesis and we can conclude that the true proportion of people liberal is higher than 0.24

6 0
4 years ago
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