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3 years ago

Which line has the steeper slope?

Mathematics

2 answers:

shutvik [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Edgen2020 the the answer is: B

Dmitrij [34]3 years ago

3 0

The line that has the steeper slope is line b

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Simplify 3n+6(-8n+9)

Sedbober [7]

Step-by-step explanation:

3n + 6( -8n + 9)

= 3n - 48n + 54

= - 45n + 54

Hope it will help

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3 years ago

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Krystal wanted to buy her favorite jeans while they were on sale. The original price of the jeans was $50 and was reduced to $25

sveta [45]

The jeans were reduced 50%.

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3 years ago

Solve y=x² +7 for x. A. x=y-7 B. x=+√y +7 C. x=y+7 D. x = t√y-7

Juli2301 [7.4K]

Answer:

D. x = t√y-7

Step-by-step explanation:

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2 years ago

Amanda uses 1/3 of a cup of milk each time she makes a batch of pancakes. How manybbatches can she make if she only has 11/22 of

kow [346]

Answer:

Amanda can make 1.5 or 3/2 of batches of pancakes with 11/22 of a cup of milk.

Step-by-step explanation:

1. Let's review the information given to us for answering the question correctly:

Amount of milk Amanda use for a batch of pancakes = 1/3 cup

2. How many batches can she make if she only has 11/22 of a cup of milk left?

Let's simplify 11/22, dividing by 11 the numerator and the denominator,

11/22 = 1/2

Now, using the Rule of Three Simple, we can calculate the answer to this question, this way:

Number of batches = (1/2 * 1)/1/3

Number of batches = 1/2 / 1/3

Number of batches = 1/2 * 3/1 (Taking the reciprocal)

Number of batches = 3/2 = 1.5

Amanda can make 1.5 or 3/2 of batches of pancakes with 11/22 of a cup of milk.

4 0

3 years ago

According to the National Institute on Drug Abuse, a U.S. government agency, 17.3% of 8th graders in 2010 had used marijuana at

miskamm [114]

Answer:

The conditions for use of the normal model to represent the distribution of sample proportion are not met. He should increase the sample size until the conditions are met.

If the test is done anyway, the null hypothesis failed to be rejected.

The conclusion is taht there is not enough evidence to support the claim that the percentage is lower in this district.

Step-by-step explanation:

The conditions for use of the normal model to represent the distribution of sample proportion are not met, as the affirmative responses are less than 10.

$np=80*0.1=8$

If the test of hypothesis is done as if the conditiones were met, we know that the claim is that the percentage is lower in this district.

Then, the null and alternative hypothesis are:

$H_0: \pi=0.173\\\\H_a:\pi$

The significance level is 0.05.

The sample has a size n=80.

The sample proportion is p=0.1.

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.173*0.827}{80}}\\\\\\ \sigma_p=\sqrt{0.001788}=0.042$

Then, we can calculate the z-statistic as:

$z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.1-0.173+0.5/80}{0.042}=\dfrac{-0.067}{0.042}=-1.578$

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

$P-value=P(z$

As the P-value (0.057) is greater than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the percentage is lower in this district.

7 0

3 years ago