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Varvara68 [4.7K]

3 years ago

6

Helppppppppppppppppppp

1 answer:

GaryK [48]3 years ago

8 0

shovels=3

bucket =7

a_ 3:7

b- 7:3

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PLZ HELPPPPPPPPPPPPP GIVING BRAINLIST Match each expression to its value.

Lelu [443]

Answer:

1 and 3, 2 and 4.

Step-by-step explanation:

1. -1.66666666667

2. 1

3. -1.66666666667

4. -1

3 0

3 years ago

An English professor assigns letter grades on a test according to the following scheme. A: Top 14% of scores B: Scores below the

NeX [460]

Answer:

Grades between 62 and 64 result in a D grade.

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:

$\mu = 71.9, \sigma = 7.8$

Find the numerical limits for a D grade.

D: Scores below the top 84% and above the bottom 10%

So below the 100-84 = 16th percentile and above the 10th percentile.

16th percentile:

This is the value of X when Z has a pvalue of 0.16. So X when Z = -0.995.

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

$-0.995 = \frac{X - 71.9}{7.8}$

$X - 71.9 = -0.995*7.8$

$X = 64$

10th percentile:

This is the value of X when Z has a pvalue of 0.1. So X when Z = -1.28.

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

$-1.28 = \frac{X - 71.9}{7.8}$

$X - 71.9 = -1.28*7.8$

$X = 62$

Grades between 62 and 64 result in a D grade.

6 0

3 years ago

GEOMETRY HELP PLEASE!!! FAST!!!

Lubov Fominskaja [6]

The <em><u>correct answer</u></em> is:

Rotation of 90° counterclockwise about the origin and a translation 2 units right

Explanation:

A rotation 90° counterclockwise maps each point (x, y) to (-y, x). This means our points would be:

A(-4,3)→(-3, 4); B(-1,3)→(-3, -1); C(-2,1)→(-1, -2)

A translation 2 units right will add 2 units to the new x-coordinates; this gives us

(-3, 4)→(-1, 4); (-3, -1)→(-1, -1); and (-1, -2)→(1, -2)

These are the points in the image, so this is the correct set of transformations.

7 0

3 years ago

Compare -5 and -3.

Nuetrik [128]

Answer:

Simplifying then comparing both terms

−5 and −3, −5 is less than −3, which means that the first term is less than the second term. −5 < −3

Step-by-step explanation:

Hope this helps have a good day^^

7 0

3 years ago

Find the side of a cube if its volume is 1331 cm³.

SSSSS [86.1K]

answe= aprox 11

Using the formula

V=a3

Solving fora

a=V⅓=1331⅓≈11

4 0

3 years ago