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3 years ago

HELP ASAP PLEASE AND EXPLAIN:)

Mathematics

1 answer:

olganol [36]3 years ago

7 0

Answer:

5=a

the answer is a

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Brenda has a square-shaped photo frame. If the area of the square frame is 123 square inches, which statement is true?

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The length equals √123=11.09 inches
Therefore the statement "The length of the photo frame is between the 11 inches and 12 inches." is true.

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3 years ago

Please help question in the picture

Tju [1.3M]

We can think of this as a right triangle, where the given lengths are the legs.

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21² + 28² = c²

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3 years ago

A road is 450 metres long . It takes a woman 5 minutes to walk along the road . Work out the average speed of the woman . Give y

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Theres 60 seconds in a minute. If it takes her 5 minutes, multiply 60 by 5. you will get 300. then all you will do is divide the meters by 300 seconds. you will get the answer of 1.5 metres per second.

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2 years ago

20) In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween costume to the office at

Allisa [31]

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

n = 1200

x = 32% of 1200

So, $\hat{p}=32\5=0.32$

We need to find 95% confidence interval.

so, z = 1.96

So, margin of error would be

$z\times \sqrt{\dfrac{p(1-p)}{n}}\\\\=1.96\times \sqrt{\dfrac{0.32\times 0.68}{1200}}\\\\=1.96\times 0.0135=$

So, Interval would be

$\hat{p}\pm \text{margin of error}}\\\\=0.32\pm 0.0263\\\\=(0.32-0.0263,0.32+0.0263)\\\\=(0.2937,0.3463)\\\\=(0.294,0.346)\\\\=(29.4\%,34.6\%)$

Hence, Option 'c' is correct.

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3 years ago

What number is 25 percent of 400

kaheart [24]

25 percent of 400= 100

8 0

4 years ago

Read 2 more answers