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3 years ago

Is 52 prime or composite

Mathematics

2 answers:

mel-nik [20]3 years ago

6 0

Answer:

composite

Step-by-step explanation:

Shalnov [3]3 years ago

5 0

Answer:

composite

Step-by-step explanation:

here is a trick-any even number on the last digit will always be composite

28,24,36,etc

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The students in Mrs. Thompson's class have to do a book report. They were given the choice to read a historical fiction, non-fic

Tomtit [17]

The answer would be A.
You know there is 25 students and you also know that 32% read non fiction.
So what is 32 percent of 25? You would simply multiply 25*32%

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Sergeeva-Olga [200]

Answer:

3/25

Step-by-step explanation:

This is the simplest fraction for 12%.

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A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance tra

Karo-lina-s [1.5K]

Answer:

The critical values for α = 0.10 are t=±1.7341.

Step-by-step explanation:

The critical values for a two tailed test are the values of t that are placed in the limit of the significance level. If the test statistic t is greater than this critical values, the null hypothesis is rejected.

To determine this values, we first divide the significance level by 2. With a t-table or app, we can determine the t values for P(x>|t|)=α/2=0.05.

In this case, for a degrees of freedom DF=20-2=18, we have the test statistic t=±1.7341 that satisfies the condition.

Solution of the hypothesis test

In this problem we want to prove if the slope of the regression model is different from 0, by means of a hypothesis test.

First, we state the null and alternative hypothesis:

$H_0: B_1=0\\\\H_1: B_1 \neq 0$

The significance level is $\alpha=0.10$ .

The degrees of freedom for a simple regression model is:

$DF=n-2=20-2=18$

The standard error estimated of the slope is 0.0053.

The test statistic t is calculated as:

$t=\frac{B_1}{SE}=\frac{0.0214}{0.0053} = 4.0377$

The P-value for a two-tailed test for a t=4.0377 and DF=18 is:

$P=0.00078$

The P-value is smaller than the significance level, so the effect is statistically significant. The null hypothesis is rejected.

7 0

3 years ago

Help me please solve the circled question show your work

Rasek [7]

Part 1) Use the fact that there are 12 inches in a foot

a) How many inches tall is a 7 foot basketball player?

we know that

1 foot=12 inches

so by proportion

$\frac{12}{1} \frac{inches}{foot} =\frac{x}{7} \frac{inches}{feet} \\ \\x=12*7\\ \\x=84\ inches$

therefore

the answer Part 1a) is

$84\ inches$

Part b) If a yard is a 3 feet long, how many inches are in a yard?

we know that

1 yard=3 feet

1 foot=12 inches

Convert 3 feet to inches

by proportion

$\frac{12}{1} \frac{inches}{foot} =\frac{x}{3} \frac{inches}{feet} \\ \\x=12*3\\ \\x=36\ inches$

therefore

the answer Part 1b) is

$36\ inches$

Part 2) At the farmer's market two pounds of peaches cost $4.20 How much will five pounds cost?

by proportion

$\frac{4.20}{2} \frac{\$}{pounds} =\frac{x}{5} \frac{\$}{pounds} \\ \\2*x=4.2*5\\ \\x=4.2*5/2=\$10.5$

therefore

the answer Part 2) is

$\$10.5$

Part 3) Janice mother gave her a ten dollars bill to buy five pounds each of bananas and apples at the grocery store. When she got there she found that bananas were 80 c per pound and apples were $1.40 per pound.

Did Janice's mother give her enough money? If so, should she receive any change? If not, how much more money does she need?

we know that

Find the cost of the bananas

$5\ pounds*0.80\frac{\$}{pounds}=\$4$