All categories

3 years ago

How many percent of 50 is 10? 20 of 60% is what number?

Mathematics

1 answer:

Verdich [7]3 years ago

6 0

Answer: 20% ; 33.33%

Step-by-step explanation:

How many percent of 50 is 10?

Well, the answer is 20%.

20 of 60% is what number?

The answer is 33.33%.

You might be interested in

When the sample size and the sample proportion remain the same, a 90 percent confidence interval for a population proportion p w

deff fn [24]

Answer:

A 90% confidence interval for p will be narrower than the 99% confidence interval.

Step-by-step explanation:

The formula to compute the (1 - α) % confidence interval for a population proportion is:

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

Here $\hat p$ is the sample proportion.

The margin of error of the confidence interval is:

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

The MOE is dependent on:

Confidence level
Standard deviation
Sample size

The MOE is directly related to the confidence level and standard deviation.

So if any of the two increases then the MOE also increases, thus widening the confidence interval.

And the MOE is inversely related to the sample size.

So if the sample increases the MOE decreases and vice versa.

It is provided that the sample size and the sample proportion are not altered.

The critical value of z for 90% confidence level is:

$z_{\alpha/2}= z_{0.10/2}=z_{0.05}=1.645$

And the critical value of z for 99% confidence level is:

$z_{\alpha/2}= z_{0.05/2}=z_{0.05}=1.96$

So as the confidence level increases the critical value increases.

Thus, a 90% confidence interval for p will be narrower than the 99% confidence interval.

6 0

3 years ago

Area of a trapezoid is 70 meters squared, and its bases are 5m and 9m, find its height

MrMuchimi

Answer:

Step-by-step explanation:

5 0

3 years ago

Which statements are true about triangle QRS? Select three options.

valina [46]

Answer:

The side opposite <Q is RS

The hypothenuse is QR

The side adjacent to <Q is QS

Step-by-step explanation:

Side RS is directly opposite <Q. The first statement provided in the options is correct.

The side that is opposite to <R is QS. The second statement in the options is not correct.

The longer leg of a right triangle is always the hypotenuse. Side QR in ∆QRS is the hypotenuse. The third statement given in the options is correct.

The side adjacent to <R is not SQ. RS is the side adjacent to <R. The fourth statement in the given options is not correct.

Side QS is adjacent to <Q. The fifth option is correct.

8 0

3 years ago

4-a = -4 please answer this

ikadub [295]

4 - 8 = -4.

Note that 8 (in the equation) comes after 4 (also in the equation) so, that makes the answer negative. If you wrote the equation like this:

8 - 4 = 4. Then it would equal 4, not negative 4 as given.

So,

a = 8

5 0

3 years ago

Need quick help with 2 math equations asap! Thanks!

solong [7]

Before answering, keep in mind that parallel lines have equal slopes and perpendicular lines have negative reciprocal slopes. Each problem has you find the slope and then use that rule.

For line F, $m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}}$

Let x $x_{1}$ = 7, x $x_{2}$ = 9, y $y_{1}$ = 13, y $y_{2}$ = -3

$m = \frac{-3 - 13}{9-7}$

$m = \frac {-16}{2}$

m = 8

For line E, the calculations are similar and the slope is 3/5. The perpendicular line would have m = -5/3.

5 0

3 years ago