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natka813 [3]
2 years ago
11

WILL MARK BRAINLIEST ASAPPPP

Mathematics
1 answer:
irinina [24]2 years ago
5 0
Answer: 49.5 round up to 50

Explanation: add the area of a rectangle plus the area of a triangle
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4/2, 2/7, 1/2, 5/6 is your answer

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A bag contains 35 marbles, 11 of which are red. A marble is randomly selected from the bag, and it is blue. This blue marble is
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11 red + 24 blue = 35 marbles

If 1 blue is withdrawn

11 red + 23 blue = 34 marbles

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2 years ago
What is the volume of the following rectangular prism?
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3 years ago
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A study of 40 English composition professors showed that they spent, on average, 13 minutes correcting a student's term paper. T
photoshop1234 [79]

Answer:

a)

90% confidence interval for the mean grading time of all composition papers.

(12.47981 , 13.52019)

b)

Appropriate inequality

The interval is  ( 12.47981 < μ < 13.52019)

Step-by-step explanation:

<u><em>Explanation</em></u>:-

a)

Given sample size 'n' = 40

Mean of the sample = 13 minutes

standard deviation = 2 min

level of significance = 0.10 or 90%

90% confidence interval for the mean grading time of all composition papers.

( x^{-} - Z_{0.1} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.10} \frac{S.D}{\sqrt{n} } )

 ( 13 - 1.645 \frac{2}{\sqrt{40} } , 13 +1.645 \frac{2}{\sqrt{40} } )

( 13 - 0.52019 , 13 + 0.52019)

(12.47981 , 13.52019)

b)

The interval is  ( 12.47981 < μ < 13.52019)

7 0
3 years ago
24% of 75 is what number?
mariarad [96]
The answer is 18
75/x = 100%/24%
x/75 = 24/100
you’re answer is 18
6 0
2 years ago
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