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DochEvi [55]
2 years ago
11

Please help 10 points

Mathematics
2 answers:
ohaa [14]2 years ago
5 0

Answer:

It doesnt show anything

Step-by-step explanation:

Andre45 [30]2 years ago
5 0

Answer:

i think its A

Step-by-step explanation

A rational number is a number that can be written as a ratio. That means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. The number 8 is a rational number because it can be written as the fraction 8/1. hope I helped you <3 :)

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What is the circumference of the circle with a diameter of 4cm?
lilavasa [31]

Answer:

12.56

Step-by-step explanation

<h3>4×3.14 is 12.56</h3><h3 /><h3 />
4 0
3 years ago
Mary and Jane both took PSY230 last semester but they were in two different sections taught by different professors. Mary's clas
Greeley [361]

Answer:

Due to the higher z-score, Jane did better in class.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

Whoever's grade had the better z-score did better in class.

Mary's:

Mean of 85, standard deviation of 5, grade of 88. This means that \mu = 85, \sigma = 5, X = 88. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{88 - 85}{5}

Z = 0.6

Jane's

Mean of 80, standard deviation of 10, grade of 88. This means that \mu = 80, \sigma = 10, X = 88. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{88 - 80}{10}

Z = 0.8

Due to the higher z-score, Jane did better in class.

4 0
2 years ago
If the 10th of the 10 consecutive numbers is 10, what is their sum?
liq [111]
Represent these consecutive numbers (assuming that they are all integers):

x
x+1
x+2
x+3
x+4
x+5
and so on
x+8
x+9 is the tenth number.  x+9 = 10, so x = 9.

Think of it this way:  there are 10 consecutive numbers, and the last one is 10.

Working backwards, we get the sequence 10, 9, ... 3, 2, 1.

The sum of such an arith sequence is equal to the count of the numbers times the average of the first and last terms:

sum here = 10(1+10)/2 = 5(11) = 55          (answer)
7 0
2 years ago
HELP THIS IS FOR TODAY HELP!!!! THANK YOU TO WHOEVER ANSWER'S
Rzqust [24]

Answer:

9,000 feet per minute

Step-by-step explanation:

4 0
3 years ago
What value of t satisfies the equation t/8-3/4=9/16
Y_Kistochka [10]
The answer to t is t= 21/2
5 0
3 years ago
Read 2 more answers
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