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Vesna [10]
3 years ago
5

Find the value of x (4x-5)

Mathematics
2 answers:
Strike441 [17]3 years ago
8 0

Answer:

BRAINLEST

Step-by-step explanation:

4 { \times  }^{2}  - 5x

this is the answer

Simora [160]3 years ago
7 0

Step-by-step explanation:

use distributive property to multiply x by 4x-5

4x ^{2}  - 5

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What is the absolute deviation of 4 in this data set?
Nana76 [90]

Answer:

n

6

Mean

11

Average Absolute Deviation (MAD)

4.6667

Step-by-step explanation:

4 0
2 years ago
Professor Halen teaches a College Mathematics class. The scores on the midterm exam are normally distributed with a mean of 72.3
lbvjy [14]

Answer:

14.63% probability that a student scores between 82 and 90

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 = 72.3, \sigma = 8.9

What is the probability that a student scores between 82 and 90?

This is the pvalue of Z when X = 90 subtracted by the pvalue of Z when X = 82. So

X = 90

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

Z = \frac{90 - 73.9}{8.9}

Z = 1.81

Z = 1.81 has a pvalue of 0.9649

X = 82

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

Z = \frac{82 - 73.9}{8.9}

Z = 0.91

Z = 0.91 has a pvalue of 0.8186

0.9649 - 0.8186 = 0.1463

14.63% probability that a student scores between 82 and 90

3 0
3 years ago
HELPPPPPPPPPPPPPppppppppp number 4
astraxan [27]

Answer:

3 dots

Step-by-step explanation:

This should be correct due to there only being 3 100% on the table

7 0
3 years ago
Please help me with my math
ValentinkaMS [17]
Im failing math but passing all others im sorry lol
7 0
3 years ago
RT has the endpoints (0, 2) and (4, 2). What is its midpoint?
Nimfa-mama [501]
R=(0,2), T=(4,2)
vector:
v=(4-0,2-2)=(4,0)
v/2=(2,0)

(0,2)+v/2=(2,2)

so (2,2) is the midpoint
3 0
3 years ago
Read 2 more answers
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