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3 years ago

Please answer this question for brainliest!

Mathematics

1 answer:

Shtirlitz [24]3 years ago

8 0

Answer:

The bigger rectangle is 2.3 times bigger than the smaller one.

Step-by-step explanation:

10.81/4.70=2.3

2.53/1.10=2.3

btw I answered like 2 of your previous questions and never got brainiest.

You might be interested in

Expand simplify (3x2) squared

lianna [129]

Answer:

= 36

Step-by-step explanation:

${(3 \times 2)}^{2} = (3 \times 2)(3 \times 2)$

(3×2)(3×2) = (6)(6)

= 6^2

= 36

7 0

3 years ago

39 is what percent of 52?

Schach [20]

Answer:

1.3 percent

Step-by-step explanation:

3 0

3 years ago

What is the formula for a confidence interval?

ikadub [295]

Answer:

a) The formula is given by mean $\pm$ the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.

b) $\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

If the distribution for X is normal or if the sample size is large enough we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

Part a

The formula is given by mean $\pm$ the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.

Part b

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

5 0

4 years ago

An athlete eats 75g of protein per day while training. How much protein will she eat during 23 days of training? Write your answ

OverLord2011 [107]

K ⇒ Kilograms
H
D
B ⇒ grams
D
C
M
75 ×23= 1725
distance between Kilo. and grams is 3 jumps
so you jump the decimal 3 jumps to the left
Answer: 1.725 Kilograms of protein <span />

5 0

3 years ago

Read 2 more answers

there is 30 students in Mr. perry's class who all just took a test half of the students earn a B on the test and 1/5 of the stud

goldenfox [79]

So, let's put the test scores in fractions. We need them to have a common denominator, so let's use 10.

5/10=b 2/10=a 3/10= c or below

I added up 5/10 and 2/10 and subtracted that from 10/10 because it represents the rest of the test scores. We need to find how many students are 3/10.

We could multiply 3/10 by 30. Or we could divide 30 by 10, and multiply that by 3. Either way, we get 9.

So, 9 students scored a c or below on the test.

5 0

4 years ago