Cameron got 18 out of 20 problems correct on the test.What percent did she make

Answers

Answer 1

Answer: She got 90% correct. How? Do 18 divided by 20. You get 0.9 which is equal to 90%

Answer 2

Answer: She got 90% because you multiply 18 and 20 by 5 and it equals to 90/100. So, 90% is an A.

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Why is it difficult/ impossible to find even prime numbers?

Answers

It is difficult because prime numbers are numbers with no factors. There's not many. A lot of one digit numbers are prime and odd numbers but after 2, all of the even whole numbers are composite and some odds past 100 (and some before 100) are, also

What is the slope of the line with the equation of y = 3/4 x that passes through the point (2, 1)?

Answers

Answer:

slope is 3/4

Step-by-step explanation:

the slope is just what is attached to the x

A supersonic jet was flying at a constant velocity starting 8,400 kilometers west of U.S. airspace. Itflew one-third of the way to U.S. airspace in 2 hours. What was the jet's velocity?
Write your answer as a whole number.

Answers

Answer:

1,400 km/hr

Step-by-step explanation:

One third of the distance 8,400 km is 2,800 km.

The unit rate (speed) of the jet is therefore

2,800 km

--------------- = 1,400 km/hr

2 hr

In a test, the 10 students in group 1 get a mean score of 43%.The 15 students in group 2 get a mean score of 57%.

Hank says, " The mean score for all 25 students is 50%."
What mistake has Hank made?

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What is the correct mean score for all 25 students?

Answers

The mistake is that he forgot that the groups were not equal! one group was bigger than another, but he treated them as if they were equal

the real mean is calculated like this:

(43*10+15*57)/25=

(1285)/25=51.4

the real mean was 51.4

Please do me a favor and answer this ASAP! Due before midnight! 9:25pm where I am at.

Answers

Step-by-step explanation:

The tuxedo price is blurry so I can't see it.

but you would need to multiply the addutional days by the price for the additional day.

and for the total price you would need to add the price before the additional days to the price for the additional days for how much he needs to pay.

p-price

p-priced×p=price for additional days

Corey needs 24 boards that are 47 1/2 inches long.A. how many feet of boards should he buy? explain.
B. If you can only buy 8-foot boards, how many should he buy?explain

Answers

Answer with explanation:

Number of boards need by corey =24

Length of each board is $47 (1)/(2)\n\n=(95)/(2)$

Length in inches of board that corey should buy

$(95)/(2)* 24\n\n=95*12\n\n=1140$ inches

1 foot=12 inches

$(1)/(12) \text{foot}=1\text{inches}\n\n(1140)/(12) \text{foot}=1140\text{inches}\n\n95\text{foot}=1140\text{inches}$

So, Length in feet of board =95 foot

Length of each board = 8 foot

Total Length in feet of board =95 foot

So, number of boards that corey should buy

$(95)/(8)\n\n=11(7)/(8)$

=Approximately 12 Boards

A. 95 feet
B. 12, because that would get you 96 feet of board, and if you only got 11, then you would only have 88 feet of boards which is not enough.

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