(WILL MARK BRAINLIEST) (Please help me) (╥﹏╥)

Mathematics

1 answer:

Yuliya22 [10]3 years ago

6 0

Answer:

Step-by-step explanation:

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Find the value of H:

rewona [7]

Answer:

The value of H is 28.

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(H-6)/(-7-(-5))

m=(H-6)/(-7+5)

-11=(H-6)/-2

-11(-2)=H-6

22=H-6

H=22+6

H=28

7 0

2 years ago

What is ?l4 as a mixed number?

PSYCHO15rus [73]

Answer:

It's a whole number. It cannot be a mixed number. Anyways I would have to know the denominator.

3 0

2 years ago

Solve by completing the square -x^2+8x-6=0

Svetllana [295]

-x² + 8x - 6 = 0
x = -(8) +/- √((8)² - 4(-1)(-6))
 2(-1)
x = -8 +/- √(64 - 20)
 -2
x = -8 +/- √(44)
 -2
x = -8 +/- 2√(11)
 -2
x = -8 + 2√(11) x = -8 - 2√(11)
 -2 -2
x = 4 - √(11) x = -8 + √(11)

6 0

3 years ago

A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30 What score is necessary to reach

nlexa [21]

Answer:

A score of 150.25 is necessary to reach the 75th percentile.

Step-by-step explanation:

Problems of normal distributions 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.

A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30.

This means that $\mu = 130, \sigma = 30$