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Bond [772]
3 years ago
6

Find the missing value need help

Mathematics
1 answer:
barxatty [35]3 years ago
7 0
Answer is - 10



Step-by-step explanation:

Let the missing number be ‘x’
-8-x = 2
-x = 2 + 8
-x =10
x = -10
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Rectangle ABCD is similar to rectangle QRST. The width of ABCD is 5 inches and the length is 8 inches. If the length of QRST is
omeli [17]
Answer: 7.5

Form your proportion. Let x be the width of QRST.

Length of ABCD      Length of QRST
-----------------------  =  ------------------------- 
Width of ABCD         Width of QRST

8/5 = 12/x

Solve for x by cross-multiplying.
(8)(x) = (12)(5)
8x = 60
x = 7.5


8 0
3 years ago
Complete the steps to factor 2x2 + x + 5x + 15 by grouping.
arlik [135]

Answer:

19+6x

Step-by-step explanation:

2×2+x+5x+15

4+6x+15

19+6x

7 0
3 years ago
Since the slope of a vertical line is undefined, is it possible ofr vertical lines to be parallel?
ikadub [295]

Yes, because if you have x=5 and x=10 they are parallel lines to each other.

6 0
3 years ago
Someone answer this please (6)
postnew [5]
7+ (-5) = 2.
Therefor, 4^2 would be the right answer.
7 0
2 years ago
A fish story: The mean length of one-year-old spotted flounder, in millimeters, is 127 with standard deviation of 22, and the me
pishuonlain [190]

Answer:

The z-score for this length is of 1.27.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

One-year-old flounder:

Mean of 127 with standard deviation of 22, which means that \mu = 127, \sigma = 22

Anna caught a one-year-old flounder that was 155 millimeters in length. What is the z-score for this length

This is Z when X = 155. So

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

Z = \frac{155 - 127}{22}

Z = 1.27

The z-score for this length is of 1.27.

4 0
3 years ago
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