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3 years ago

3x-2y=-6 how to find the slope,y-intercept,and x-intercept

Mathematics

1 answer:

wolverine [178]3 years ago

7 0

You have to move your variables around.<span />

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The letters of the alphabet are written on cards and places in a brown paper bag. What is the probability or drawing a vowel, re

ehidna [41]

Answer:

0.1%

Step-by-step explanation:

3 0

3 years ago

The scores for a certain test of intelligence are normally distributed with mean 85 and standard deviation 11. Find the 90th per

jonny [76]

Answer:

99.1 is the 90th percentile of these scores.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 85

Standard Deviation, σ = 11

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.90

$P( X < x) = P( z < \displaystyle\frac{x - 85}{11})=0.90$

Calculation the value from standard normal z table, we have,

$P(z \leq 1.282) = 0.90$

Putting values, we get,

$\displaystyle\frac{x - 85}{11} = 1.282\\\\x = 99.1$

Thus, 99.1 is the 90th percentile of these scores.

5 0

3 years ago

Write the letters of the expressions that are equivalent to the given expression.

Tresset [83]

Answer: A.) 10x + 15

Step-by-step explanation:

You would distribute (multiply) the 5 to the 2x which would then make it 10x and you would distribute (multiply) the 5 to the 3 which would then make it 15. Because the 5 is a positive number the sign stays the same.

Therefore, 10x + 15 is your answer.

3 0

3 years ago

Please answer both zoom close so you can see the picture.

Iteru [2.4K]

Well I only know the first one

3 0

3 years ago

How many integers between 100 and 400 contain the digit 2?

Semenov [28]

102, 112, 120-129, 132, 142, 152, 162, 172, 182, 192, 200-299, 302, 312, 320-329, 332, 342, 352, 362, 372, 382, 392
2+10+7+100+2+10+7
138 integers.

8 0

3 years ago