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djyliett [7]
3 years ago
15

Select the reason why these triangles are

Mathematics
1 answer:
natali 33 [55]3 years ago
7 0
I think it is c if not correct me please
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I’ll give points + brainalist for answer / explanation
Fynjy0 [20]

Answer:

C. the circumference of a circle

Step-by-step explanation:

The perimeter of a square is the length of the outside, which is found by adding all the side lengths. The circumference of a circle is similar because it is also the length of the outside of the shape.

3 0
3 years ago
Right answer gets Brainlist
V125BC [204]

orlando 是不对的。ABBY 是对的应为2是power

5 0
3 years ago
My Notes A large manufacturing plant uses lightbulbs with lifetimes that are normally distributed with a mean of 1600 hours and
Evgen [1.6K]

Answer:

The bulbs should be replaced each 1436.9 hours.

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 problem, we have that:

\mu = 1600, \sigma = 70

How often should the bulbs be replaced so that no more than 1% burn out between replacement periods?

This is the first percentile of hours. So it is X when Z has a pvalue of 0.01.

So it is X when Z = -2.33.

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

-2.33 = \frac{X - 1600}{70}

X - 1600 = -2.33*70

X = 1436.9

The bulbs should be replaced each 1436.9 hours.

6 0
3 years ago
3/10 divided by -3/7
Sav [38]

Answer:

- 7/10

Step-by-step explanation:

There you go hope alls well.

5 0
2 years ago
Read 2 more answers
Slope intercept form <br> WILL MARK BRAINLIST
RideAnS [48]
Answer : y= -10/1 x - 30
7 0
3 years ago
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