All categories

4 years ago

How to rewrite 4 x parentheses 25 + 4 parentheses

Mathematics

1 answer:

MissTica4 years ago

5 0

4×29 because 25+4 is 29, we did the thing inside the parentheses so the parentheses is now gone, becoming 4×29

You might be interested in

A local hamburger shop sold a combined total of hamburgers and cheeseburgers on Thursday. There were more cheeseburgers sold tha

lora16 [44]

There’s not enough information to answer

6 0

3 years ago

Easton wants to put a variety of donuts in a display case. The case is large enough to hold 100 donuts. Complete the table below

shutvik [7]

The amounts for each donut are given as follows:

Strawberry: 15.

Chocolate: 45.

Sprinkle: 40.

<h3>How to obtain the amounts?</h3>

The amounts for each donut are found applying the proportion, multiplying the decimal equivalent of each percentage by the total number of donuts.

From the problem, the total number of donuts is given as follows:

100 donuts.

The percentages of each type of donuts are given as follows:

Strawberry: 15%.

Chocolate: 45%.

Sprinkle: 40%.

The decimal equivalent of each percentage is given as follows:

Strawberry: 0.15.

Chocolate: 0.45.

Sprinkle: 0.4.

Hence the amounts are given as follows:

Strawberry: 15, as 0.15 x 100 = 15.

Chocolate: 45, as 0.45 x 100 = 45.

Sprinkle: 40, as 0.4 x 100 = 40.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

3 0

1 year ago

In a recent year, Washington State public school students taking a mathematics assessment test had a mean score of 276.1 and a s

Oksi-84 [34.3K]

Answer:

a) $\mu_{\bar x} =\mu = 276.1$

$\sigma_{\bar x} =\frac{\sigma}{\sqrt{n}}=\frac{34.4}{\sqrt{64}}=4.3$

b) From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu=276.1, \frac{\sigma}{\sqrt{n}}=4.3)$

c) $P(\bar X \geq 285)=P(Z\geq \frac{285-276.1}{4.3}=2.070)$

$P(Z\geq2.070)=1-P(Z$

Step-by-step explanation:

Let X the random variable the represent the scores for the test analyzed. We know that:

$\mu=E(X) = 276.1 , \sigma=Sd(X) = 34.4$

And we select a sample size of 64.

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Part a

For this case the mean and standard error for the sample mean would be given by:

$\mu_{\bar x} =\mu = 276.1$

$\sigma_{\bar x} =\frac{\sigma}{\sqrt{n}}=\frac{34.4}{\sqrt{64}}=4.3$

Part b

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu=276.1, \frac{\sigma}{\sqrt{n}}=4.3)$

Part c

For this case we want this probability:

$P(\bar X \geq 285)$

And we can use the z score defined as:

$z=\frac{\bar x -\mu}{\sigma_{\bar x}}$

And using this we got:

$P(\bar X \geq 285)=P(Z\geq \frac{285-276.1}{4.3}=2.070)$

And using a calculator, excel or the normal standard table we have that:

$P(Z\geq2.070)=1-P(Z$

8 0

3 years ago

What does geometry mean ?

Montano1993 [528]

"The branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs." - Dictonary.com

In simple words, it is a study in math in which you study shapes, lines, planes, and points.

4 0

3 years ago

Read 2 more answers

Help me i need it right now pls

Soloha48 [4]

Answer:

i dont know sorry

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers