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mel-nik [20]
3 years ago
8

if the diameter of the table cloth measures 50 inches which measurement is closest to the area of the tablecloth

Mathematics
1 answer:
never [62]3 years ago
3 0
 50 x 3.14 = 157  i think this is the answer
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GIVING OUT BRAINLIEST!<br><br> 2. Which integers do you use for counting?
cestrela7 [59]

Answer:

Whole integers

Step-by-step explanation:

0, 1, 2, 3, 4, 5... are all whole numbers, or the counting numbers. If we didn't specify "whole", then that would also include decimals, and we don't count usually with decimals.

Hope this helps!

4 0
1 year ago
PLEASE HELP
marishachu [46]

Answer:

A

Step-by-step explanation:

The exact summary for the angle between two tangents (or a tangent and a secant) is 1/2 the difference between the two intercepted arcs.

The two intercepted arcs are 240 and 120 (givens)

So the angle between the two  tangents is 1/2 ( 240 - 120) which is A

7 0
3 years ago
Read 2 more answers
Consider the probability that no less than 92 out of 159 students will pass their college placement exams. Assume the probabilit
Yanka [14]

Answer:

0.2843 = 28.43% probability that no less than 92 out of 159 students will pass their college placement exams.

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

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}

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.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

p = 0.55, n = 159. So

\mu = E(X) = 159*0.55 = 87.45

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{159*0.55*0.45} = 6.27

Probability that no less than 92 out of 159 students will pass their college placement exams.

No less than 92 is more than 91, which is 1 subtracted by the pvalue of Z when X = 91. So

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

Z = \frac{91 - 87.45}{6.27}

Z = 0.57

Z = 0.57 has a pvalue of 0.7157

1 - 0.7157 = 0.2843

0.2843 = 28.43% probability that no less than 92 out of 159 students will pass their college placement exams.

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3 years ago
Solve for x on triangle with 12 and 43 and round final answer to the nearest tenth
alexdok [17]

Step-by-step explanation:

i just tried i guess this will help

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