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yarga [219]
3 years ago
9

What is the scale factor of figure a to figure b

Mathematics
1 answer:
Ugo [173]3 years ago
7 0

Answer:

2.5 : 1

Step-by-step explanation:

It is convenient to use corresponding sides that are easily divided. The longest side of A is 25; of B it is 10. The scale factor is ...

... A : B = 25 : 10 = 2.5 : 1

_____

You could also write it using integers as 5 : 2.

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Several years​ ago, 39​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students r
BaLLatris [955]
<h2>Answer with explanation:</h2>

Let p be the population proportion  of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive.

Given : Several years​ ago, 39​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive.

Set hypothesis to test :

H_0: p=0.39\\\\H_a :p\neq0.39

Sample size : n= 1055

Sample proportion : \hat{p}=\dfrac{466}{1055}=0.441706161137\approx0.44

Critical value for 95% confidence : z_{\alpha/2}=1.96

Confidence interval : \hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}

0.44\pm (1.96)\sqrt{\dfrac{0.39(1-0.39)}{1055}}\\\\0.44\pm0.0299536805135\\\\0.44\pm0.03\\\\=(0.44-0.03, 0.44+0.03)\\\\=(0.41,\ 0.47)

Since , Confidence interval does not contain 0.39.

It means we reject the null hypothesis.

We conclude that 95​% confidence interval represents evidence that​ parents' attitudes toward the quality of education have changed.

8 0
3 years ago
In order to become a member of the library-all-star-members club, there is a $40 sign-up fee and a $2 monthly fee. Write an equa
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Assuming f(x) is the cost and X is the number of months.

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5 0
3 years ago
Have another question for you guys it is in the image
Lerok [7]

Answer:

A because its supposed to be on the y axis

5 0
3 years ago
Michelle bought 4 gallons of grape juice and 5 gallons of apple juice for a party. What is the ratio of gallons of apple juice t
ivann1987 [24]

Answer: 4 to 5

5to 4

Step-by-step explanation:

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3 years ago
Read 2 more answers
NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ WILL REPORT FAKE ANSWERS
sammy [17]

Answer:

B

Step-by-step explanation:

6 0
3 years ago
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