Click each dot on the image to select an answer. Choices: 0.73 -0.6. ?

Mathematics

1 answer:

lesya [120]3 years ago

3 0

0.13 is the answer to this question

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For a suitcase to be checked on a flight (instead of carried by hand), it can weigh at most 50 pounds. Andre’s suitcase weighs 2

solmaris [256]

Answer:

No, I don't think so.

Step-by-step explanation:

If his suitcase weighs 23 kg and 10 kg is 22 pounds. You could seperate it. 10, 10, and 3 meaning 22+22= 44. This would mean that 1 kg would equal about 2.2 a pound. So 44 + ( 2.2 x 3 ) = 50.6 kg.

It would be 0.6 k.g over. I think this is right unless I calculated this wrong.

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3 years ago

Indicate which property is illustrated in Step 3.

olga55 [171]

Step 3 is the associative property of addition.
The 12 and -12 are grouped together.

8 0

3 years ago

Suppose you want to decrease your margin of error by a factor of 3. by what factor, do you need to increase your sample size? in

elena55 [62]

The sample size, n required to produce a margin of error, M, in a probability proportion distribution is given by:

$n= \frac{p(1-p)z_{\alpha/2}^2}{M^2}$

The above formular shows that the sample size is inversely proportional to the Margin of error.

Then we have:

$n= \frac{k}{M^2}$

where k is some constant.

Now suppose we decrease M by a factor of 3,

$\left(i.e.\ \frac{M_1}{M_2} =3\right)$

$n_1= \frac{k}{M_1^2} \\ \\ n_2= \frac{k}{M_2^2} \\ \\ \frac{n_2}{n_1} = \frac{k}{M_2^2} / \frac{k}{M_1^2} = \frac{k}{M_2^2} \times \frac{M_1^2}{k} = \frac{M_1^2}{M^2_2} =\left( \frac{M_1}{M_2} \right)^2=3^2=9 \\ \\ n_2=9n_1$

Therefore, if we decrease the Margin of error by a factor of 3, we need to increase the sample size by a factor of 9.

6 0

4 years ago

Mrs. Chin paid a 20 percent tip on the bill for lunch. If the tip amount was $2.75, what was the bill for lunch before the tip w

Allushta [10]

2.75 x 100 / .20 = 13.75

double check

$13.75 x 0.25 = $2.75

so answer
The bill was $13.75 <span>for lunch before the tip added</span>

5 0

3 years ago

Read 2 more answers

HELPPPPPPPPP PLEASEEEEE<br><br> Write the perimeter of the triangle as a polynomial

GuDViN [60]

It’s either B or D. I’m sorry I’m not so sure but I think it’s either one of those.

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3 years ago