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3 years ago

I a failin really need help

Mathematics

1 answer:

Ad libitum [116K]3 years ago

7 0

It is no. You need to figure out the missing angles. You can take 97 and 35 from the yellow triangle and add them up to equal 132. Take 180 and subtract 132 to find the missing angle, which would be 48. The angle 48 compares to the 47 in the green triangle. Since they are not the same, they are not similar.

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What is (y-10)(4y+2)?

AleksandrR [38]

Answer:

4y²−38y−20

Step-by-step explanation:

(y−10)(4y+2)

=(y+−10)(4y+2)

=(y)(4y)+(y)(2)+(−10)(4y)+(−10)(2)

=4y²+2y−40y−20

=4y²−38y−20

please mark me brainliest!

8 0

3 years ago

Read 2 more answers

A professor gives her 100 students an exam; scores are normally distributed. The section has an average exam score of 80 with a

frozen [14]

Answer:

6.18% of the class has an exam score of A- or higher.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

$\mu = 80, \sigma = 6.5$

What percentage of the class has an exam score of A- or higher (defined as at least 90)?

This is 1 subtracted by the pvalue of Z when X = 90. So

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

$Z = \frac{90 - 80}{6.5}$

$Z = 1.54$

$Z = 1.54$ has a pvalue of 0.9382

1 - 0.9382 = 0.0618

6.18% of the class has an exam score of A- or higher.

4 0

3 years ago

What is the difference in the Volume Formula for a prism and a pyramid. *

Tanzania [10]

Answer:the volume of a prism is the area of the base times the height of the prism. The volume of the pyramid has the same base area and height as the prism, but with less volume than the prism. The volume of the pyramid is one third the volume of the prism.

Step-by-step explanation:

i hope this helps

4 0

3 years ago

PLEASE DO IT it is due in 5 minutes

german

A) 42x-12
6*7=42. 6*2=12
b) 21y
11+4+6=21

4 0

3 years ago

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Simplify each expression below

Fed [463]