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EleoNora [17]
3 years ago
7

If you have 63 books and you donate 1/3 of you’re books how many will you have left

Mathematics
1 answer:
ryzh [129]3 years ago
6 0

Answer: 42

Step-by-step explanation: you would do 63 divided by 3 then you would get 21 and do 21×2 and get 42

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/viewform?hr submission=Chclk4feKBIQ.
Gennadij [26K]

Answer:

c) .22

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this question:

\sigma = 2.5, n = 500

Then

M = z*\frac{\sigma}{\sqrt{n}}

M = 1.96*\frac{2.5}{\sqrt{500}}

M = 0.22

5 0
3 years ago
What would be the order?
Oduvanchick [21]

Answer:

<em>17/2, 8.8 with bar on right 8, |-9|, sqrt(82)</em>

Step-by-step explanation:

sqrt(82) = 9.05538...

17/2 = 8.5

8.8 with bar on right 8 = 8.8888888...

|-9| = 9

In order from least to greatest: 17/2, 8.8 with bar on right 8, |-9|, sqrt(82)

3 0
3 years ago
What is the following sum? 2(^3√16x^3y)+4(^3√54x^6y^5)
victus00 [196]
Option A: 4x(^3√2y)+12x^2y(^3√2y^2)
6 0
3 years ago
Read 2 more answers
King kyle orders the construction of his future mausoleum ( a fancy tomb) so that people never forget his awesomeness. His archi
BartSMP [9]

Answer:

okay  so,

so do a 16 by 14 rectangle it should be good

sry if its wrong i tried but i hope it helped ;0

5 0
3 years ago
Read 2 more answers
Find the next item in the sequence. 15, 30, 45, 60, ...
amid [387]

The rate of change is 15. We know this because 30 - 15 = 15, 45 - 30 = 15, and 60 - 45 = 15.

The next item in the sequence would be 75, since 60 + 15 = 75.

4 0
3 years ago
Read 2 more answers
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