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Gnesinka [82]
3 years ago
14

Actually answer plzzz

Mathematics
2 answers:
xeze [42]3 years ago
8 0
If should be a decagon. 72/2 (since we only need one of the angles) is equal to 36. 180-36 is 144. Decagons have internal angles of 144 degrees so that should be your answer.
Taya2010 [7]3 years ago
7 0

Answer:37

Step-by-step explanation:

just bc i was bored in class

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Ts Which conclusions can you draw from the data shown<br> in the table? Select all that apply.
timama [110]

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Twelve tickets cost $30.00

Step-by-step explanation:

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Which describes the slope of the given line?
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A case of toothpicks has 5,400 toothpicks, there are 9 boxes of toothpicks in the case.how many toothpicks are in each box?
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divide it, 5400 divided by 9 is 600.

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Raul received a score of 75 on a history test for which the class mean was 70 with a standard deviation of 7. He received a scor
JulsSmile [24]

Answer:

history test

Step-by-step explanation:

Problems of normally distributed samples 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.

In this problem, we have that:

He did better relative to the class in the test in which he had a higher Z score.

So:

History

Raul received a score of 75 on a history test for which the class mean was 70 with a standard deviation of 7. So we have X = 75, \mu = 70, \sigma = 7

So:

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

Z = \frac{75 - 70}{7}

Z = 0.71

Biology

He received a score of 73 on a biology test for which the class mean was 70 with standard deviation 7. So we have X = 73, \mu = 70, \sigma = 7

So:

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

Z = \frac{73 - 70}{7}

Z = 0.43

He had a higher Z score in the history test, so this is the test in which he did better relative to the rest of the class.

6 0
4 years ago
1.What values of a,b,and c would you use in the quadratic formula for the following equation?
SCORPION-xisa [38]
First, rearrange the quadratic equation:
5x² + 9x - 4 = 0

Now, compare it to the general quadratic equation:
a<span>x² + bx + c = 0

Therefore you get:
a = +5
b = +9
c = -4

And the quadratic formula will be:

x = [-b +/- </span>√(b² - 4ac)] / 2a
   = [ -5 +/- √(81 - 4·5·(-4))] / 2·5
   = (-5 +/- √161) / 10

6 0
3 years ago
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