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Snezhnost [94]
3 years ago
8

10. Evaluate m + n2 if we know m = 2 and n = –2. A. 8 B. –8 C. –6 D. 6

Mathematics
1 answer:
kolbaska11 [484]3 years ago
4 0

m+n^2

2+(-2)^2

2 +4

6

Choice D

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Basic geometry question plsss
SSSSS [86.1K]

Answer:

x=53

Step-by-step explanation:

pythagoras theorem

a^2 + b^2 =c^2

here a and b are two small sides and c is hypotenuse (longest side)

28^2 + 45^2 = c^2

784 + 2025 =x^2

2809 =x^2

\sqrt{2809} =x

53 =x

7 0
2 years ago
An elevator has a placard stating that the maximum capacity is 1296 lb long dash — 8 passengers.​ So, 8 adult male passengers ca
Masja [62]

Answer:

There is a 98.26% probability that it is overloaded.

This elevator does not appear to be safe.

Step-by-step explanation:

Problems of normally distributed samples can be 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}

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. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

In this problem, we have that:

Assume that weights of males are normally distributed with a mean of 170 lb, so \mu = 170

They have a standard deviation of standard deviation of 29 lb, so \sigma = 29.

We have a sample of 8 adults, so we have to find the standard deviation of the sample to use in the place of \sigma in the Z score formula.

s = \frac{\sigma}{8} = \frac{29}{8} = 3.625

Find the probability that it is overloaded because they have a mean weight greater than 162 lb, so X = 162

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

Z = \frac{162 - 170}{3.625}

Z = -2.21

Z = -2.21 has a pvalue 0.0174.

So, there is a 1-0.0174 = 0.9826 = 98.26% probability that it is overloaded.

Any probability that is above 95% is considerer unusually high. So, this elevator does not appear to be safe, since there is a 98.26% probability that it is overloaded.

8 0
3 years ago
Help with this question please thank you so much
muminat
-6/5,-236/5 would be the minimum
8 0
3 years ago
Please help! I will give points for helpng.
xenn [34]
I think 19 i pretty sure
4 0
3 years ago
Read 2 more answers
Two sides of a triangle are 4 meters and 12 meters long . Which of the following is not a possible length of the third side?
natulia [17]

Answer:

it is D

Step-by-step explanation:

:)

7 0
2 years ago
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