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AURORKA [14]
2 years ago
13

Please help w the question in the pic, thanksss!

Mathematics
1 answer:
aleksley [76]2 years ago
4 0

Step-by-step explanation:

everything can be found in the picture

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Which ratios form a proportion?
Karo-lina-s [1.5K]
<span>B. 3/7, 18/42

This work, because you multiply 6 top and bottom

hope this helps</span>
3 0
3 years ago
G(x) = 3x -1. Find x such that g(x)= 2​​0​.
sergiy2304 [10]

Step-by-step explanation:

i. 3x-1=20

or, 3x= 21

x= 7

ii. 3x+1= 22

3x= 21

x= 7

iii. 2x-5=99

2x= 104

x=52

iv. g(3)= 3+5/2= 11/2

g(0)= 0+ 5/2=5/2

g(-3)= -3+5/2 = -1/2

x+5/2= 0

so, x= -5/2

3 0
2 years ago
Calculate the slope of the line through the points M(-2, -1) and N(0, -13).
galina1969 [7]

Answer:-6

Step-by-step explanation:

to solve for slope, you have to do (y1-y2)/(x1-x2)

in this problem, that turns into (-1-(-13))/(-2-0)

which is (-1+13)/(-2-0) which is 12/-2 which is -6, your answer

6 0
3 years ago
8 divided by (7 - 3) x ( 4 + 6)<br> Equals?
gregori [183]

8÷(7-3)x(4+6)

8÷4x10

2x10

<u>20</u>

3 0
3 years ago
Assume the random variable X is normally distributed with mean mu equals 50 and standard deviation sigma equals 7. Compute the p
drek231 [11]

Answer:

The probability that <em>X</em> is less than 42 is 0.1271.

Step-by-step explanation:

The random variable <em>X </em>follows a Normal distribution.

The mean and standard deviation are:

E (X) = <em>μ</em> = 50.

SD (X) = <em>σ</em> = 7.

A normal distribution is continuous probability distribution.

The Normal probability distribution with mean µ and standard deviation σ is given by,

f_{X}(\mu, \sigma)=\frac{1}{\sigma\sqrt{2\pi}}e^{-(x-\mu)^{2}/2\sigma^{2}};\ -\infty

To compute the probability of a Normal random variable we first standardize the raw score.

The raw scores are standardized using the formula:

z=\frac{x-\mu}{\sigma}

These standardized scores are known as <em>z</em>-scores and they follow normal distribution with mean 0 and standard deviation 1.

Compute the probability of (X < 42) as follows:

P(X

*Use a <em>z</em>-table for the probability.

Thus, the probability that <em>X</em> is less than 42 is 0.1271.

The normal curve is shown below.

6 0
3 years ago
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