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3 years ago

What is -3/2 times (-5 1/4)

Mathematics

1 answer:

diamong [38]3 years ago

7 0

Answer:

Step-by-step explanation:

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What is the coefficient in the expression 3-15r?

astraxan [27]

Answer:

Step-by-step explanation:

Coefficient means the number in front of the variable (like r) or term (a letter).

In your expression 3-15r, 15 is the coefficient.

I hope this helps.

6 0

3 years ago

Ve, Carpet sells for $36 per square yard. How much will 8 square yards cost?

grandymaker [24]

Answer:

$288

Step-by-step explanation:

If each square yard of carpet is $36, you just have to multiply 8 by that to get the total.

4 0

3 years ago

Read 2 more answers

You have $10.00 and want to buy candy for $8.73. How much money will you have left over?

Viktor [21]

Answer:

$1.27

Step-by-step explanation:

You simply just need to subtract 10.00-8.73 to get your answer which is 1.27.

6 0

4 years ago

Read 2 more answers

A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the

Rasek [7]

Answer:

$\mu_{p} = p = 0.06$

And the standard error is given by:

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

And replacing we got:

$SE_[p]= \sqrt{\frac{0.06*(1-0.06)}{373}}= 0.0123$

And we want to find this probability:

$P(\hat p < 0.03)$

We can calculate the z score for this case and we got:

$z = \frac{\hat p -\mu_p}{\Se_p} = \frac{0.03-0.06}{0.0123}= -2.440$

And using the normal distribution table or excel we got:

$P(\hat p < 0.03)= P(Z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

For this case we can find the mean and standard error for the sample proportion with these formulas:

$\mu_{p} = p = 0.06$

And the standard error is given by:

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

And replacing we got:

$SE_[p]= \sqrt{\frac{0.06*(1-0.06)}{373}}= 0.0123$

And we want to find this probability:

$P(\hat p < 0.03)$

We can calculate the z score for this case and we got:

$z = \frac{\hat p -\mu_p}{\SE_p} = \frac{0.03-0.06}{0.0123}= -2.440$

And using the normal distribution table or excel we got:

$P(\hat p < 0.03)= P(Z$

8 0

4 years ago

Aishas mother is five times older than aisha.the sum of their ages is 30.how old is aisha?

Cloud [144]

m = 5a

m + a = 30

Because we already know the value of m, we can find the value of a.

5a + a = 30

Combine like terms.

6a = 30

Divide both sides by 6

a = 5

Now that we know the value of a, we can find the true value of m.

m = 5a

m = 5 * 5

m = 25

Aisha is 5 years old, and Aisha's mother is 25 years old. (This is your answer.)

5 0

3 years ago