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Andrei [34K]
3 years ago
8

(-∞,0] [0,∞) [-∞,0) (-∞,0) which is the answer?

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0
I think it is the third one
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Perpendicular to y=2x+3 through (2, -3)
Reika [66]

Hello!

To find the line perpendicular to the given line, y = 2x + 3, firstly, find the slope of the perpendicular line. To find it, use this format: -1/m, where m is the slope. It is also called the "negative reciprocal" of the slope of the given line.

Then, you substitute an ordered pair into a new slope-intercept equation (with the slope) and find the y-intercept.

-1/m when m = 2 → -1/2

y = -1/2x + b (substitute the given ordered pair)

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

-3 = -1 + b (add 1 to both sides)

-2 = b | The y-intercept of the perpendicular equation is -2.

Therefore, the line perpendicular to the given equation, that also goes through the given ordered pair is y = -1/2x - 2.


7 0
3 years ago
How many ways can an IRS auditor select 3 of 9 tax returns for an audit?
Olegator [25]

Answer:

84ways

Step-by-step explanation:

This is a problem on combination. Combination has to do with selection. For example if r objects are to be selected from a pool of n objects, this can be done in nCr ways.

nCr = n!/(n-r)!r!

9C3= 9!/(9-3)!3!

9C3= 9!/(6)!3*2*1

9C3= 9*8*7*6!/(6)!6

9C3= 9*8*7*/6

9C3= 9*8*7*/6

9C3= 504/6

9C3= 84ways

8 0
3 years ago
What is the difference between the largest prime number less than 5o and the smallest comoosite number greater than 10
erastova [34]
<h3>Answer:  35</h3>

A prime number is one where the only factors are one and itself. A composite number has other factors.

You'll have to look at the list of numbers from 1 to 50

In that list, 47 is the largest prime less than 50, and 12 is the smallest composite number greater than 10.

So 47-12 = 35

8 0
3 years ago
Drew has 4 pieces rope 1 meter long each. He cuts each rope into fifths. How long will each of the fifths be in centimeters?
erastovalidia [21]

Answer:

20 CM

Step-by-step explanation:

100 cm = 1 meter

the one meter roope = 100cm

Dvide 100cm by 1/5 to determine the length of each cm

100 cm x 5 = 20

100 cm x 5

5 0
3 years ago
Expressions equal to 10^5
Drupady [299]

Answer:

10 x 10 x 10 x 10 x 10, 20 x 20 x 10, 30 x 20

6 0
4 years ago
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