All categories

3 years ago

HELP ME ASAP PLEASEEE

Mathematics

1 answer:

Margaret [11]3 years ago

7 0

Step-by-step explanation:

300/5=60

240/4=60

360/6=60

u paid $60/h there is no correct answer in the option

You might be interested in

In baseball, a player pitches a ball from the mound to a catcher behind the plate. A pitch that passes over the plate above the

elena-s [515]

The probability the pitch over the plate is a ball is 5:10. (5 balls and 10 strikes over the plate) should be written as 5:15 or 1:3 so this one is inaccurate.

4 0

3 years ago

Read 2 more answers

Which one of the following numbers are irrational ?

liq [111]

Answer: B and E are irrational numbers

5 0

3 years ago

A research group needs to determine a 90% confidence interval for the mean repair cost for all car insurance small claims. From

lutik1710 [3]

Answer:

a) $z = 1.645$

b) The should sample at least 293 small claims.

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:

$\alpha = \frac{1-0.9}{2} = 0.05$

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 $1-0.05 = 0.95$ , so $z = 1.645$ , which means that the answer of question a is z = 1.645.

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.

(b) If the group wants their estimate to have a maximum error of $12, how many small claims should they sample?

They should sample at least n small claims, in which n is found when

$M = 12, \sigma = 124.88$ . So

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

$12 = 1.645*\frac{124.88}{\sqrt{n}}$

$12\sqrt{n} = 205.43$

$\sqrt{n} = \frac{205.43}{12}$

$\sqrt{n} = 17.12$

$\sqrt{n}^{2} = (17.12)^{2}$

$n = 293$

The should sample at least 293 small claims.

8 0

3 years ago

Thissss please‍♀️ AND THANK YOUUU

3241004551 [841]

Answer:

5*5*5*5 = 625

3*3*3*3*3*3 = 729

5 0

3 years ago

Very fast please!<br><br> How do you work out:<br><br> 5x3/4

Harlamova29_29 [7]

As it is only 5, it is 5/1 so you do 5 x 3 = 15 then 1 x 4 = 4. So 15/4

4 0

3 years ago