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boyakko [2]
2 years ago
13

HELPPPP PLEASEEEEEE HELP ME

Mathematics
1 answer:
Norma-Jean [14]2 years ago
8 0
203949 hope this helps :)
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Answer:

missing side length = 9

Step-by-step explanation:

c^{2} = a^{2} + b^{2}

a = 6

b = 7

c = missing side

c^{2} = 6^{2} + 7^{2}

c^{2} = 36 + 49

c^{2} = 85

\sqrt{c^{2} } = \sqrt{85}

c = 9.219 = 9

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Step-by-step explanation:


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3 years ago
Does the residual plot indicate that a line is a good model for predicting the height of girls from their ages? Explain.
galben [10]
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The class average on a math test was an 82 with a standard deviation of 5. If the 
Alex787 [66]

Answer:

Option 3 and 4.

Step-by-step explanation:

The z score shows by how many standard deviations the raw score is above or below the mean. The z score is given by:

z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean, \ \sigma=standard\ deviation

Given that mean (μ) = 82, standard deviation (σ) = 5

1) For x = 74:

z=\frac{x-\mu}{\sigma} \\\\z=\frac{74-82}{5} =-1.6

Option 1 is incorrect

2) For x < 87

z=\frac{x-\mu}{\sigma} \\\\z=\frac{87-82}{5} =1

From the normal distribution table, P(x < 87) = P(z < 1) = 0.8413 = 84.13%

Option 2 is incorrect

3) For x = 95:

z=\frac{x-\mu}{\sigma} \\\\z=\frac{95-82}{5} =2.6

Option 3 is correct

4) For x < 77

z=\frac{x-\mu}{\sigma} \\\\z=\frac{77-82}{5} =-1

From the normal distribution table, P(x < 77) = P(z < -1) = 0.16 = 16%

Option 4 is correct

5) For x > 92

z=\frac{x-\mu}{\sigma} \\\\z=\frac{92-82}{5} =2

From the normal distribution table, P(x > 92) = P(z > 2) = 1 - P(z < -2) = 1 - 0.9772 = 0.0228 = 2.28%

Option 5 is incorrect

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2 years ago
Kevin’s recipe uses a ratio of 4 parts flour to 2 parts sugar. Anna’s recipe uses 5 parts flour to 3 parts sugar. Could their re
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Answer:

yes they can

Step-by-step explanation:

pls give brainliest im almost lvled up.

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