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Umnica [9.8K]
3 years ago
7

13. The center of a circle is at (7,-2) and the

Mathematics
2 answers:
weeeeeb [17]3 years ago
6 0
A is the answer Sorry if wrong
LenaWriter [7]3 years ago
3 0

Answer:

A

Step-by-step explanation

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Evaluate the function<br> f(x) = - 2x^2 + 2x + 4<br> Find f(1)
AlekseyPX

Answer:

f(1) = 4

Step-by-step explanation:

f(x) = - 2x^2 + 2x + 4

f(1) = - 2(1)^2 + 2(1) + 4

f(1) = -2 + 2 + 4

f(1) = 4

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What is -7 + 4 = im gonna give you guys 5 days to firgure this out then i will tell the answer
Aleks04 [339]

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What is the ratio of water to mixed energy drink?
dedylja [7]

Answer:

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Step-by-step explanation:

The number of water would be on the left,

The number of mixed energy drink would be on the right

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3 years ago
A test preparation claims that more than​ 50% of the students who take their test prep course improve their scores by at least 1
satela [25.4K]

Answer:

Step-by-step explanation:

Corresponding scores before and after taking the course form matched pairs.

The data for the test are the differences between the scores before and after taking the course.

μd = scores before taking the course minus scores before taking the course.

a) For the null hypothesis

H0: μd ≥ 0

For the alternative hypothesis

H1: μd < 0

b) We would assume a significance level of 0.05. The​ P-value from the test is 0.65. The p value is high. It increases the possibility of accepting the null hypothesis.

Since alpha, 0.05 < than the p value, 0.65, then we would fail to reject the null hypothesis. Therefore, it does not provide enough evidence that scores after the course are greater than the scores before the course.

c) The mean difference for the sample scores is greater than or equal to zero

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