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Bumek [7]
2 years ago
10

Plzz help will mark brainiest Don't do it for the points

Mathematics
1 answer:
UNO [17]2 years ago
6 0

Answer:

I think the answer is B

Step-by-step explanation:

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An exercise machine with an original selling price of $1,275 is marked down by 20%. What is the sale price of the exercise machi
krek1111 [17]

Answer:

1,020

Step-by-step explanation:

If it is marked down by 20%, then 80% is left. What is 80% of 1275 you ask? .8*1275=1020!

5 0
3 years ago
The distribution of prices for home sales in a certain New Jersey county is skewed to the right with a mean of $290,000 and a st
I am Lyosha [343]

Answer:

The probability that the mean of the sample is greater than $325,000

P( X > 3,25,000) = P( Z >2.413) = 0.008

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given the mean of the Population( )= $290,000

Standard deviation of the Population = $145,000

Given the size of the sample 'n' = 100

Given 'X⁻'  be a random variable in Normal distribution

Let   X⁻ = 325,000

Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }  = \frac{325000-290000}{\frac{145000}{\sqrt{100} } }  = 2.413

<u><em>Step(ii):</em></u>-

The probability that the mean of the sample is greater than $325,000

P( X > 3,25,000) = P( Z >2.413)

                           = 0.5 - A(2.413)

                           = 0.5 - 0.4920

                           = 0.008

<u><em>Final answer:-</em></u>

The probability that the mean of the sample is greater than $325,000

P( X > 3,25,000) = P( Z >2.413) = 0.008

6 0
2 years ago
If david must score 90 percent on his test in order to a if he scored a 89,90,98,86 what is the score on his fifth test
Readme [11.4K]
David's score on his fifth test would be an 87. If you add up all the scores from his first to his fourth test, it would 363. However, since there are five tests, in order to get a 90 percent, the sum of all five test scores would be 450. 450 - 363 = 87.
7 0
3 years ago
A) 7xy?<br> Degree and number of terms
jolli1 [7]

Answer:

1 and 1

Step-by-step explanation:

degree of 1 and 1 term.

8 0
3 years ago
Nine hundred and fifty seven divided by one hundred
Kryger [21]

Answer:

9.57

Step-by-step explanation:

900 / 100 is 9 but then you just have to add the 57 with a decimal at the end

5 0
2 years ago
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