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3 years ago

Plz help!!!!!!!!!!!!!

Mathematics

1 answer:

Rzqust [24]3 years ago

8 0

Lol C is the correct answer, just count the amount of circles :)

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Kareem made 195$ for 13 hours of work. At the same rate, how much he make for 11 hours of work?

denpristay [2]

He makes 165$ for 11 hours because he makes 195$ in 13 hours so you divide 195 by 13 to get 15$ the amount he earns per hour. After that you just multiply 15 by 11 to get 165$. Hope this helps:)>

7 0

3 years ago

A park district has 45 pine trees and 30 oak trees to be planted. They are separating the trees for different areas. They want e

Lady_Fox [76]

Answer:

greatest number of areas that can be created=5

Step-by-step explanation:

given data

Number of pine trees = 45

Number of oak trees = 30

solution

we want area have same number of both trees

so we get here greatest number of area

we find here greatest common factor of 45 and 30

so Prime factorization of 45 and 30 are

45 = 3 × 3 × 5

30 = 2 × 3 × 5

as here GCF = 5

so here greatest number of areas that can be created=5

6 0

3 years ago

The sales of a grocery store had an average of $7,000 per day. The store introduced several advertising campaigns in order to in

Sati [7]

Answer:

a.The advertising campaigns increased the average daily sales.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the advertising campaigns increased the average daily sales.

Then, the null and alternative hypothesis are:

$H_0: \mu=7000\\\\H_a:\mu> 7000$

The significance level is 0.05.

The sample has a size n=100.

The sample mean is M=7280.

The standard deviation of the population is known and has a value of σ=1000.

We can calculate the standard error as:

$\sigma_M=\dfrac{\sigma}{\sqrt{n}}=\dfrac{1000}{\sqrt{100}}=100$

Then, we can calculate the z-statistic as:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{7280-7000}{100}=\dfrac{280}{100}=2.8$

This test is a right-tailed test, so the P-value for this test is calculated as:

$\text{P-value}=P(z>2.8)=0.0026$

As the P-value (0.0026) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the advertising campaigns increased the average daily sales.

7 0

3 years ago

In an alloy of gold and silver the ratio of the metals is 6:4. How much gold is there in 200 grams of this alloy?

nexus9112 [7]

Answer:

120 gold is in the alloy

Step-by-step explanation:

G:S

6:4

6+4=10

200/10=20

20*6=120

Hope this helps!

4 0

3 years ago

PLEASE HELP ME ASAP WITH THE CORRECT ANSWER!!!!!!!!!!

mixer [17]

Answer:

X > 91.

Step-by-step explanation:

The > has a line under hopes this helps!!

5 0

3 years ago