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arsen [322]
3 years ago
9

I need to knw whats the slope of the graph pls, no links

Mathematics
1 answer:
kykrilka [37]3 years ago
3 0

Answer:

4/5 or 0.8

Step-by-step explanation:

Equation of the line:

y = 0.8x – 2.4 or y = 4/5x–12/5

When x=0, y = -2.4

When y=0, x = 3

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You randomly choose one of the tiles shown below. What is the probability of choosing a number less than 5? *
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Answer:

1/3

Step-by-step explanation:

There are 12 tiles. There are 4 numbers less than 5, so the probability would be 4/12 so we simplify it to 1/3

7 0
3 years ago
C is the midpoint of bc, bc = 7 and CD = 3x- 5 what is the value of x
grigory [225]
What is the value of D? In order to solve, you need to find all the variable values to solve for x.
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Test scores are normally distributed with a mean of 500. Convert the given score to a z-score, using the given standard deviatio
Bond [772]

Answer:

The percentage of students who scored below 620 is 93.32%.

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 question, we have that:

\mu = 500, \sigma = 80

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This is the pvalue of Z when X = 620. So

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

Z = \frac{620 - 500}{80}

Z = 1.5

Z = 1.5 has a pvalue of 0.9332

The percentage of students who scored below 620 is 93.32%.

3 0
3 years ago
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4 0
3 years ago
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15=29-x<br> x=??????????????
zhuklara [117]

15 = 29 - x

15 + x = 29

x = 29 - 15

x = 14

6 0
3 years ago
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