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sergejj [24]
3 years ago
5

Please help me !!!!!!!

Mathematics
1 answer:
NikAS [45]3 years ago
4 0
I want to say the answer is A i caulated it and i end up getting 17
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F. -10x &gt;45<br> Solve the two step inequality
Daniel [21]

Answer:

x < -4.5

Step-by-step explanation:

<u>Step 1:  Solve for x</u>

-10x / -10 > 45 / -10

When dividing or multiplying by a negative, the sign flips.

x < -4.5

Answer:  x < -4.5

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Write the percent as a decimal. Use a model to check your answer ( 6%)
bazaltina [42]

Answer:

0.06

Step-by-step explanation:

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What is the domain of the function<br> y=^3 sqrt x-1
Anettt [7]

Answer:

The domain is all real numbers

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3 years ago
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BRAINLIEST PROMISED! ;)<br><br>IT WILL TELL ME IF YOU ARE WRONG!<br><br>SELECT ALL THAT APPLY!
Anarel [89]

Triangle ABC:

m∠A = x°       (m∠A is represented by x°)

m∠B = (4x)°        (m∠B is 4 times greater than m∠A, you know m∠A is x°, so it is (4x)°)

m∠C = (5x - 30)°      (m∠C is 30° less than five times m∠A, so it is (5x - 30)°)


A triangle is 180°, so the angles in the triangle should add up to 180°


The second option is FALSE, so everything else is true

8 0
3 years ago
The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 mi
dangina [55]

Answer:

A.0.4477

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 = 16.3, \sigma = 4.2

What is the probability that a randomly selected exam will require between 14 and 19 minutes to​ grade?

This probability is the pvalue of Z when X = 19 subtracted by the pvalue of Z when X = 14. So

X = 19

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

Z = \frac{19 - 16.3}{4.2}

Z = 0.64

Z = 0.64 has a pvalue of 0.7389.

X = 14

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

Z = \frac{14 - 16.3}{4.2}

Z = -0.55

Z = -0.55 has a pvalue of 0.2912

0.7389 - 0.2912 = 0.4477

So the correct answer is:

A.0.4477

7 0
2 years ago
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