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3 years ago

Please help it’s multiple choice! ( show ur work please )

Mathematics

1 answer:

Maurinko [17]3 years ago

6 0

Answer:

I think its 12

Step-by-step explanation:

because these half angels are equal to 30,90, and 60

if you are looking for AD then we have half of 10 which is 5

So then we had 5+13=18

If we add 18+12 it will equal to 30

and if we add them all up 13+10+12+13=48

and acute angle-an angle can equal to anything below 90

I think this is correct

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khanya builders are paid R480 for 8 hours of work,whiles rex builders are paid R660 for 12 hours of work.which company is paid t

kiruha [24]

Answer:

khanya pays higher

Step-by-step explanation:

You have to find the $/hr ratios:

khanya's is 480/8->$60/hr

rex's is 660/12->%55/hr

Khanya pays the higher rate

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3 years ago

Chapter Test Find the distance between (2, -1) and (3, 4). The distance is units

AleksAgata [21]

Answer:

657483920

Step-by-step explanation:

this is incorrect

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3 years ago

The value of a computer is given by the expression 2000+(-200t) where t is the time in years.

Rashid [163]

If it was one year it would be 2200 and you just keep adding 200 for each year.

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3 years ago

The lengths of bolts in a batch are distributed normally with a mean of 3 cm and a standard

ValentinkaMS [17]

Answer:

0.8413 = 84.13% probability that a bolt has a length greater than 2.96 cm.

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 3 cm and a standard deviation of 0.04 cm.

This means that $\mu = 3, \sigma = 0.04$

What is the probability that a bolt has a length greater than 2.96 cm?

This is 1 subtracted by the p-value of Z when X = 2.96. So

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

$Z = \frac{2.96 - 3}{0.04}$

$Z = -1$

$Z = -1$ has a p-value of 0.1587.

1 - 0.1587 = 0.8413

0.8413 = 84.13% probability that a bolt has a length greater than 2.96 cm.

3 0

3 years ago

Select the correct answer.

Drupady [299]

Answer: A

Step-by-step explanation:

because i did a quiz with the same and i got it right

8 0

3 years ago