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Nataliya [291]
3 years ago
5

PLEASSSE HELP ASAP

Mathematics
2 answers:
dusya [7]3 years ago
4 0
7.62 units

use pythagorean theorem to solve
Paladinen [302]3 years ago
3 0
The answer is D, 7.62 units. You use the Pythagorean Theorem to solve. Since a² + b² = c², you replace 3 and 7 with a and b and then square them. Then, you get b² = 58. To find b, square root both sides and you get ≈ 7.62 units.
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I need help ASAP, please.
sertanlavr [38]

Answer:

slope = 3

y-intercept = -4

y = 3x-4

Step-by-step explanation:


8 0
3 years ago
Write an equation that you can use to solve for x.<br><br> Enter your answer in the box.
Talja [164]

Answer:

x+63 = 90

x = 27

Step-by-step explanation:

The two angles are complementary, so they add to 90 degrees

x+63 = 90

Subtract 63 from each side

x+63-63 = 90-63

x = 27

7 0
3 years ago
Read 2 more answers
a set of average city temperatures in december are normally distributed with a mean of 16.3°C and a standard deviation of 2°C. w
koban [17]

Answer:

19.74% of temperatures are between 12.9°C and 14.9°C

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 = 16.3, \sigma = 2

What proportion of temperatures are between 12.9°C and 14.9°C?

This is the pvalue of Z when X = 14.9 subtracted by the pvalue of Z when X = 12.9.

X = 14.9

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

Z = \frac{14.9 - 16.3}{2}

Z = -0.7

Z = -0.7 has a pvalue of 0.2420

X = 12.9

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

Z = \frac{12.9 - 16.3}{2}

Z = -1.7

Z = -1.7 has a pvalue of 0.0446

0.2420 - 0.0446 = 0.1974

19.74% of temperatures are between 12.9°C and 14.9°C

3 0
3 years ago
Insert parentheses to make the equation true then simplify
Liono4ka [1.6K]
10(4^2-(9)

Since 16-9 is 7
And 10 times 7 is 70
3 0
4 years ago
A groundskeeper is tasked with fertilizing the grass of a triangular courtyard. To determine how much fertilizer he should buy,
Scilla [17]
Square root shows up
step 1
[ 10 + sqrt(3) ] * 1/2 = 5 + 1/2sqrt(3)


sqrt(90) = sqrt( 3 * 3 * 10) = 3 sqrt(10)
hope this helps : P


step 2
multiply both above together:
3sqrt(10) * [ 5 + 1/2sqrt(3) ] = 15 sqrt(10) + 3/2sqrt(30)
7 0
4 years ago
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