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creativ13 [48]
3 years ago
5

Which expression is the same as 9 divided by 4

Mathematics
1 answer:
Yuri [45]3 years ago
7 0

Answer:

9 / 4 = 9 divided by 4

Step-by-step explanation:

9 over 4 in fraction format is the same expression as 9 divided by 4

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A triangle has two sides of length 20 and 11. What is the largest possible whole-number length for the third side?
charle [14.2K]

Answer:

30

Step-by-step explanation:

20+11=31

It can't be exactly 31 but it can be any number less than 31, so the nearest whole number down is 30

8 0
3 years ago
A set of city temperatures in April are normally distributed with a mean of 19.7 degrees Celsius and a standard deviation of 2 d
Sati [7]

Answer:

19.77% of average city temperatures are higher than that of Cairo

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

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, we have that:

\mu = 19.7, \sigma = 2

What percentage of average city temperatures are higher than that of Cairo?

This is 1 subtracted by the pvalue of Z when X = 21.4.

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

Z = \frac{21.4 - 19.7}{2}

Z = 0.85

Z = 0.85 has a pvalue of 0.8023

1 - 0.8023 = 0.1977

19.77% of average city temperatures are higher than that of Cairo

6 0
3 years ago
Which of the following is true? (
stiks02 [169]

Answer:

B. |-6|<|-7|

Step-by-step explanation:

|-6| = 6

|-7| = 7

and 6 <7 so the answer is B.

5 0
3 years ago
What is the probability of receiving a 6 or a 9 from a deck of 52 cards?
Anna11 [10]

There are four 6's and four 9's.

8/52

8 0
3 years ago
Read 2 more answers
I need help with this problem
vitfil [10]

Answer:

all of the triangles are right triangles

6 0
3 years ago
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