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3 years ago

How to do you solve 3(2)-y=9?

1 answer:

4 0

You multiply 3 and 2. you get 6-y=9. then you subtract 6. you get -y=3. you cant have negative y so you multiply -y and 3 by -1. you get y=-3,that is your answer.

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How do you solve this... 8=x-5/7

Anarel [89]

Add 5/7 on both sides.

It'll cancel out the negative 5/7, and it will make the x variable only equal to one number (Well, a mixed number.)

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3 years ago

Read 2 more answers

Divide. 5 ÷ 5 /6 = help me fast!!!!!!!!!!!!!!1

Xelga [282]

Answer:

The answer is 6

Step-by-step explanation:

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3 years ago

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What property is illustrated in the following equation? (6 x 8) x ? = 6 x (8 x 5) Associative Property of Multiplication Commuta

Gwar [14]

Answer:

associative

Step-by-step explanation:

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3 years ago

Sharon bought new basketball shoes. If the shoes cost $69.50 and sales tax is 4%, how much did Sharon spend for her new shoes?

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69.5x.04=2.78
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4 years ago

Suppose 241 subjects are treated with a drug that is used to treat pain and 54 of them developed nausea. Use a 0.05 significance

lana66690 [7]

Answer:

Null Hypothesis, $H_0$ : p = 0.20

Alternate Hypothesis, $H_a$ : p > 0.20

Step-by-step explanation:

We are given that 241 subjects are treated with a drug that is used to treat pain and 54 of them developed nausea.

We have to use a 0.05 significance level to test the claim that more than 20% of users develop nausea.

Let p = population proportion of users who develop nausea

So, Null Hypothesis, $H_0$ : p = 0.20

Alternate Hypothesis, $H_a$ : p > 0.20

Here, null hypothesis states that 20% of users develop nausea.

And alternate hypothesis states that more than 20% of users develop nausea.

The test statistics that would be used here is One-sample z proportion test statistics.

T.S. = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = proportion of users who develop nausea in a sample of 241 subjects = $\frac{54}{241}$

n = sample of subjects = 241

So, the above hypothesis would be appropriate to conduct the test.

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4 years ago