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3 years ago

Will give Brainliest!!! (Photo)

Mathematics

2 answers:

malfutka [58]3 years ago

7 0

Answer:

(-1,1,3)

Step-by-step explanation:

To find the midpoint, and the coordinates and divide by 2

(-6 +4) /2 = -2/2 = -1

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

(4+2)/2 = 6/2 = 3

(-1,1,3)

jeyben [28]3 years ago

6 0

The formula for a midpoint is:

(x1+x2/2, y1 +y2 /2, z1 +z2/2)

(-6+4)/2 = -1

(3 + -1) / 2 = 1

(4 +2)/2 = 3

The midpoint is (-1,1,3)

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Solve this inequality j/4 - 8 < 4

zubka84 [21]

J/4 - 8 < 4
<u> + 8 + 8 </u> *add 8 to both sides to cancel -8.
j/4 < 12
<u>*4/1 *4/1 </u> *multiply 4/1 to both sides to cancel 1/4
j < 48

j should be less than 48 to make the inequality true.

example: j = 47
j/4 - 8 < 4
47/4 - 8 < 4
11.75 - 8 < 4
3.75 < 4

Any number below 48 will end up with an answer less than 4. if j is 48 and above, the inequality is false because the answer arrived at will be equal to or greater than 4.

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3 years ago

Which composition of similarity transformations maps polygon ABCD to polygon A'B'C'D'?

Elina [12.6K]

Hey there!

Unless the smaller object was rotated 360° (in which case the rotation wouldn't have to be mentioned), you can see that all of the lines are still in the same place and that it wasn't rotated at all. This eliminated any answer option that mentions a rotation, which is A and C.

Also, if you count the units of one of the straight lines – for example, line AB and A'B' – you can see that the smaller object is four times smaller than the larger object. In the case of line AB and A'B', line AB is 8 units long and A'B' is 2 units long. This means that the scale factor is $\frac{1}{4}$ .

Lastly, the smaller object was moved from its initial location, which would be in the center of the larger object if it wasn't moved after being scaled down.

The answer will be B, "a dilation with a scale factor of $\frac{1}{4}$ and then a translation."

Hope this helped you out! :-)

5 0

4 years ago

Read 2 more answers

g Explain the difference between explanatory and response variables. Is it important to distinguish between the two in linear re

sukhopar [10]

Answer: See explanation

Step-by-step explanation:

The response variable is the variable that the researcher is interested in. It is what the experiment really focuses on.

An explanatory variable is the variable that is being manipulated by the researcher and it explains the variations that may occur to the response variable.

It should also be noted that it is important to distinguish between the response variable and the explanatory variable in a linear regression.

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3 years ago

Thirty-two percent of workers in Troberca City are college graduates. You randomly select 50 workers and ask them is he or she i

Gnoma [55]

The correct option is B) 67.4%

<h3>What is the z- score table?</h3>

A standard normal table (also called the unit normal table or z-score table) is a mathematical table for the values of ϕ, indicating the values of the cumulative distribution function of the normal distribution. Z-Score, also known as the standard score, indicates how many standard deviations an entity is, from the mean.

Given here, P(probability that a worker is a college graduate) = 32%

= 0.32

q (probability that a worker is not a college graduate) is 1-0.32 = 0.68

now μ(mean) = n×p

= 50×0.32

= 16

Again standard deviation σ = $\sqrt{npq\\}$