3 years ago

I need help solving these three problems and the ones I did I'm not sure if they are right. HELP PLEASE!

Mathematics

1 answer:

Art [367]3 years ago

6 0

Yes, all of your answers are correct, the answer for the second one I think is 5.
hope this helps....

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A store pays $32.00 for each video game. The store’s percent of mark up is 75%. Which shows the retail price of the video game?

Black_prince [1.1K]

The answer is $56 because 75% of $32 is 24 so you add 24 to 32.

5 0

3 years ago

Most adults would not erase all of their personal information online if they could. A software firm survey of 480 randomly selec

Westkost [7]

Answer:

-7.90

Step-by-step explanation:

Let's write the null hypothesis (H0) and alternative hypothesis (Ha) from the claim statement

P = population proportion of adults who would erase all of their personal information online if they could

H_{0}:P=0.5

H1 P< 0.5

Let's write the given information:

n = sample size = 480

sample proportion = $\hat p = 0.35$

formula of z test statistic for one sample proportion test is as follows:

$Z=\frac{\hat p-P}{\sqrt{\frac{P\times(1-P)}{n}}}$

plug the above values in the above formula we get

$Z =\frac{0.35-0.5}{\sqrt{\frac{0.35(1-0.5)}{480}}}=Z=-7.85584$

So that the test statistic value is -7.90 (Rounded up to two decimal places)

3 0

3 years ago

The chef at a restaurant bought 37 pounds of salad for $46.25. How much did she pay for 1 pound of salad? Show all work and expl

Art [367]

Answer:

$1,25

Step-by-step explanation:

$46.25 : 37 = $1,25

I divided the amount of money into the number of 37 pounds

3 0

3 years ago

Read 2 more answers

2. Calculate the angular speed of the 26-inch bicycle rotating at 200 revolutions per minute. Express your answer in radians per

Alexus [3.1K]

The angular velocity for this problem is given by:
Angular speed = 200 rev / min
The first thing you should keep in mind is the following conversion:
1 rev = 2π radians
Applying the conversion we have:
Angular speed = 200 * (2π)
Rewriting:
Angular speed = 200 * (2 * 3.14)
Angular speed = 1256 radians / minutes
Answer:
the angular speed is:
Angular speed = 1256 radians / minutes

4 0

4 years ago

20 divided by 2 (5 5)=

Anni [7]

20 ÷ 2 (5,5)
20 ÷ 2 (25)
20 ÷ 50
.4

8 0

4 years ago