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3 years ago

Caroline has 16 marbles 1\8 of them are blue how many of Caroline's marbles are blue

Mathematics

2 answers:

Zarrin [17]3 years ago

6 0

There are 2 marbles because if you multiply 1/8 x 2 you get 2/16

Ksivusya [100]3 years ago

4 0

1/8 of 16 is 2 . i hope it helps.

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Leo is purchasing a bike that is on sale for 30% off. He knows the function that represents the sale price of his bike is c(p) =

ZanzabumX [31]

Given:
sales discount = 30%
sales tax = 12%

c(p) = 0.7p where p is the original price
f(c) = 1.12c where c is the sales price of the bike.

f[c(p)] = 1.12(0.7p)

f[c(p)] = 0.784p Last option.

Assume: p = 100
c(100) = 0.7(100) = 70
f(70) = 1.12(70) = 78.4

f[70(100)] = 0.784(100) = 78.4

6 0

3 years ago

Read 2 more answers

Please help. I suck at this

Alex

Answer:

Step-by-step explanation:

Total no. Of books read =10+7+5+2

= 24

Ratio of mystery books to the total books read = 10:24 = 5:12

7 0

4 years ago

Express the confidence interval

marissa [1.9K]

Answer:

$\hat p = \frac{0.244+0.326}{2}=0.285$

$ME = \frac{0.326-0.244}{2}=0.041$

$0.285 \pm 0.041$

Step-by-step explanation:

For this case we have a confidence interval given as a percent:

$24.4\% \leq p \leq 32.6\%$

If we express this in terms of fraction we have this:

$0.244 \leq p \leq 0.326$

We know that the confidence interval for the true proportion is given by:

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

And thats equivalent to:

$\hat p \pm ME$

We can estimate the estimated proportion like this:

$\hat p = \frac{0.244+0.326}{2}=0.285$

And the margin of error can be estimaed using the fact that the confidence interval is symmetrical

$ME = \frac{0.326-0.244}{2}=0.041$

And then the confidence interval in the form desired is:

$0.285 \pm 0.041$

7 0

4 years ago

Simplify 2^3 x 2^18 A. 2^54 B. 4^54 C. 4^21 D. 2^21

maksim [4K]

When you multiply powers, you add them. You keep the constant (2) the same.

3+18= 21

2^21 <=== the answer

“D” is the answer.

I hope this helps!
~kaikers

4 0

3 years ago

What is the solution to the system of equations?<br> O (-8,-4)<br> O(-4,-8)<br> O (44)<br> 0 (4-4)

Novay_Z [31]

Answer:

Step-by-step explanation:

I'm pretty sure the answer is C sorry if I'm wrong

3 0

3 years ago

Read 2 more answers