At an animal shelter there are 15 dogs 12 cats 3 snakes and 5 parakeets which animal has 80% of the number of another animal

Mathematics

1 answer:

Tomtit [17]2 years ago

3 0

12 times 100 divided by 15 equals 80
So the answer is cats

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As a manager for an advertising company, you must plan a campaign designed to increase Twitter usage. A recent survey suggests t

kolbaska11 [484]

Given:
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
Confidence interval (CI) $\hat{p} \pm z^{*} \sqrt{ \frac{\hat{p}(1-\hat{p})}{n} } \\ where \\ n=sample\, size \\ z^{*}=1.645 \, at \, 90\% \, CL$

We want the confidence interval to be 5% or 0.05. Therefore
$0.85 - 1.645 \sqrt{ \frac{0.85(1-0.85)}{n} }=0.05 \\ 0.85 - \frac{0.5874}{ \sqrt{n} } =0.05 \\ \frac{0.5874}{ \sqrt{n} }=0.8 \\ \sqrt{n} = .7342 \\ n=0.54$

Because this number is less than 1, a default sample size of 30 (for the normal distribution) is recommended.

Answer: 30

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3 years ago

What is 4/5 11/25 4/50 as a percent?

svp [43]

I believe the 11/25 one would be 44% and 4/50 would be 8%, 4/5 would be 80%. Hope it helps!

6 0

3 years ago

Read 2 more answers

Can anyone help me with this please ?

zlopas [31]

$\displaystyle \bf\\
 \frac{x}{20} = \frac{14}{25} \\ \\ \\ 
x = \frac{14 \cdot 20}{25} = \frac{280}{25} = 11,2 \sim \boxed{10} ~~\text{(rounded to the nearest tenth)}$

7 0

2 years ago

When subtracting polynomials,distribute the negative sign,then add.

Doss [256]

Answer:

7m^2 - 11m - 2

Step-by-step explanation:

Subtract (-3m^2 + 10m + 4) from 4m^2 - m + 2:

4m^2 - m + 2

- (-3m^2 + 10m + 4) Now distribute the negative sign:

4m^2 - m + 2

+ 3m^2 - 10m - 4

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

7m^2 - 11m - 2 is the final answer.

5 0

3 years ago

if a right angle has a hypotenuse of 19 units and a leg with the length of 7 units, find the length of the other leg

anyanavicka [17]

Square root of 19^2-7^2=17.66
Answer 17.6

8 0

3 years ago