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4 years ago

4.18m-58.53=16.72 what is m?

1 answer:

6 0

First add 58.53 to 16.72. You get 75.25
Then divided 75.25 by 4.18 and you get the value of m. So, 75.25÷4.18=18.002 (it keeps going; check on a calculator for full answer).

hope this helps

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6) Tell whether -3 is a solution of the inequality.: y +6<4

igor_vitrenko [27]

Answer:

A - Yes, it's a solution

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3 years ago

The diameters of three pvc pipes are 2.357 inches, 1.896 inches, and 3.264 inches. If these three pipes are places side by side

Ymorist [56]

2.357+1.896+3.264=

2.357

+ 1.896

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------------------

7.517 inches

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3 years ago

Read 2 more answers

Math I NEED HELP LOOK AT THE IMAGE ALGEBRA IS KILLING ME

sammy [17]

Answer:

Solution,

Let the number be X

60% of X=13.5

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4 years ago

Read 2 more answers

In a recent poll of 755 randomly selected adults, 585 said that it is morally wrong to not report all income on tax returns. Us

babymother [125]

Answer:

Null hypothesis: $p=0.7$

Alternative hypothesis: $p \neq 0.7$

$z=\frac{0.775 -0.7}{\sqrt{\frac{0.7(1-0.7)}{755}}}=4.50$

$p_v =2*P(z>4.50)=0.00000680$

The p value obtained was a very low value and using the significance level given $\alpha=0.05$ we have $p_v$ so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of adults who say's adults that said that said that it is morally wrong to not report all income on tax returns differs from 0.7 or 70% .

Step-by-step explanation:

1) Data given and notation

n=755 represent the random sample taken

X=585 represent the adults that said that said that it is morally wrong to not report all income on tax returns.

$\hat p=\frac{585}{755}=0.775$ estimated proportion of adults that said that said that it is morally wrong to not report all income on tax returns.

$p_o=0.7$ is the value that we want to test

$\alpha=0.05$ represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

2) Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that 70% of adults say that it is morally wrong to not report all income on tax returns.:

Null hypothesis: $p=0.7$

Alternative hypothesis: $p \neq 0.7$

When we conduct a proportion test we need to use the z statisitc, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

3) Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.775 -0.7}{\sqrt{\frac{0.7(1-0.7)}{755}}}=4.50$

4) Statistical decision

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.

The significance level provided $\alpha=0.05$ . The next step would be calculate the p value for this test.

Since is a bilateral test the p value would be:

$p_v =2*P(z>4.50)=0.00000680$

So the p value obtained was a very low value and using the significance level given $\alpha=0.05$ we have $p_v$ so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of adults who say's adults that said that said that it is morally wrong to not report all income on tax returns differs from 0.7 or 70% .

3 0

3 years ago

Enter numbers in the boxes to write an equation that is equivalent to 34b−23b=−9.

max2010maxim [7]

We are given equation: 34b−23b=−9.

We can see 34b and 23b both has b's with them.

So, we can combine like terms.

Comining means addition or subtaction.

We have minus sign in between 34b and 23b.

So, we need to subtract 34b and 23b.

On subtracting, we get

11b.

Therefore, we get

11b = -9.

Now, we need to divide by 11 on both sides. We get on dividing

b = -9/11.

Therefore, -9/11 can be enter in the boxes to write an equation that is equivalent to 34b−23b=−9.

4 0

3 years ago