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3 years ago

Please help me?!!!!!!!!!

Mathematics

1 answer:

ratelena [41]3 years ago

3 0

Step-by-step explanation:

blue=60%

yellow= 30%

red=10%

hope it helps

please mark me brainliest

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F(x) = (x-3) (x+8) (x-11) What are the zeros of the polynomial?

aalyn [17]

hello :
F(x) = (x-3) (x+8) (x-11)
F(x) =0
x-3= 0 or x+8=0 or x-11 = 0
x=3 or x=-8 or x=11
the zeros of the polynomialare : 3 , -8 , 11

6 0

3 years ago

An English professor assigns letter grades on a test according to the following scheme. A: Top 9% of scores B: Scores below the

sergeinik [125]

Answer:

The minimum score required for an A grade is 83.

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 72.3 and a standard deviation of 8.

This means that $\mu = 72.3, \sigma = 8$

Find the minimum score required for an A grade.

This is the 100 - 9 = 91th percentile, which is X when Z has a pvalue of 0.91, so X when Z = 1.34.

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

$1.34 = \frac{X - 72.3}{8}$

$X - 72.3 = 1.34*8$

$X = 83$

The minimum score required for an A grade is 83.

5 0

3 years ago

Stanley drove his car on a business trip when he left the mleage was 840miles. And. when he returned the mileage was 1,200miles.

Elan Coil [88]

I think for this item, the rate at which the gasoline was consumed is to be calculated. To determine the distance that Stanley's car had traveled, we subtract 840 miles from 1,200 miles. That will give us an answer of 360 miles. Dividing this by 12 gallons will give us an answer of 30 miles/gal.

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4 years ago

Which choice is equivalent to the product below?

posledela

$\bf \sqrt{\cfrac{3}{16}}\cdot \sqrt{\cfrac{3}{9}}\implies \cfrac{\sqrt{3}}{\sqrt{16}}\cdot \cfrac{\sqrt{3}}{\sqrt{9}}\implies \cfrac{\sqrt{3}}{4}\cdot \cfrac{\sqrt{3}}{3}\implies \cfrac{\sqrt{3}\cdot \sqrt{3}}{4\cdot 3}
\\\\\\
\cfrac{(\sqrt{3})^2}{12}\implies \boxed{\cfrac{3}{12}}\implies \stackrel{simplified}{\cfrac{1}{4}}$

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3 years ago

[(6.2* 8.4)-9.28 help

katovenus [111]

42.8
First multiply then subtract is the rule

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3 years ago

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