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skelet666 [1.2K]
2 years ago
11

5) What decimal part of 40 is 8?

Mathematics
2 answers:
AfilCa [17]2 years ago
7 0

Answer: 0.2

Step-by-step explanation:

Nikolay [14]2 years ago
4 0
8/40 = 1/5
As a 1/5 decimal =0.2
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What conclusions can you draw from the distances that you recorded in question 7
mezya [45]

Answer:

If corresponding vertices on an image and a preimage are connected with line segments, the line segments are divided equally by the line of reflection. That is, the perpendicular distance from the line of reflection to either of the corresponding vertices is the same. Line  is a perpendicular bisector of the connecting line segments.

Step-by-step explanation:

3 0
3 years ago
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It has a time to failure distribution which is normal with a mean of 35,000 vehicle miles and a standard deviation of 7,000 vehi
Triss [41]

Answer:

The designed life should be of 21,840 vehicle miles.

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.

Mean of 35,000 vehicle miles and a standard deviation of 7,000 vehicle miles.

This means that \mu = 35000, \sigma = 7000

Find its designed life if a .97 reliability is desired.

The designed life should be the 100 - 97 = 3rd percentile(we want only 3% of the vehicles to fail within this time), which is X when Z has a p-value of 0.03, so X when Z = -1.88.

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

-1.88 = \frac{X - 35000}{7000}

X - 35000 = -1.88*7000

X = 21840

The designed life should be of 21,840 vehicle miles.

3 0
3 years ago
HELP THIS IS DUE TOMRROW ANYWAYS THE QUESTION IS
FromTheMoon [43]

This could be wrong because I'm going into the fifth grade but wouldn't it just be (7,-3)?

5 0
3 years ago
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Part A
N76 [4]

Step-by-step explanation:

Part A: We can write 40 + x + 25 = 180 because these angles are supplementary, meaning they add up to 180 degrees, and when we solve for x, we get x = 115°.

Part B: We can write y = x + 25 because these two angles are vertical angles, meaning they are equal and formed from the same lines. We know that x = 115°, so when we plug that in we get y = 140°.

Part C: z = 40° because these two angles are vertical angles. I hope this helps!

5 0
3 years ago
there are 25 students in a classroom. the ratio of girls to boys is 3to2 how many boys and how many girls are there in the class
mixas84 [53]

Answer:

15 girls, 10 boys

Step-by-step explanation:

Since the ratio is 3:2, then the ratio can be rewritten as 15:10. So there are 15 girls and 10 boys

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3 years ago
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