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vredina [299]
3 years ago
6

Ok so i know that you want brainleist but pls answer first?!

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0

Step-by-step explanation:

Expression: \frac{40}{y - 16}

When \: y=20, \: the \: value \: of \: the \: expression \: is  \:  \frac{40}{4}  = 10

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Write the equation of a line that passes through the points (0, -2) and (4, -5). Answer MUST be in standard form: Ax + By = C.
shutvik [7]

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept → (0, b).

We have the points (4, -5) and (0, -2) → y-intercept → b = -2.

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

Substitute:

m=\dfrac{-2-(-5)}{0-4}=\dfrac{-2+5}{-4}=\dfrac{3}{-4}=-\dfrac{3}{4}

Therefore we have the equation of a line

y=-\dfrac{3}{4}x-2

Convert to the standard form: Ax+By=C

y=-\dfrac{3}{4}x-2\qquad\text{multiply both sides by 4}\\\\4y=-3x-8\qquad\text{add 3x to both sides}\\\\\boxed{3x+4y=-8}

6 0
3 years ago
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If f(x)=2x-6 which of these is the inverse of f(x)
Zielflug [23.3K]

f^{-1} (x)=3+\frac{x}{2}

7 0
4 years ago
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What is the solution to the system of equations 2x-y=6 x+y=6 by using the elimination method
Karolina [17]

Add the two rows together

3x = 12

Solve for x in the above equation

x = 4

Substitute x = 4 into any of the two equations above. Let's choose the first one; 2x - y = 6

2 × 4 - y = 6

Solve for y in the above equation

y = 2

Thus,

<u>x = 4</u>

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8 0
3 years ago
45% of the student body at a local high school work part-time. 80% of the students who do not part-time love math whereas only 6
Mama L [17]

Answer:

71%

Step-by-step explanation:

I think the easiest way to think of this is to pretend that there are a total of 100 students at the high school, so that means the amount of people who work part time is 45% of 100 = 45 people. If 60% of those students love math, you do 0.6 * 45 = 27 people.

Next, 80% of the students who do not have a part time job (100 - 45 = 55) love math, so 0.8 * 55 = 44 people.

44 + 27 = 71, so the percent is 71/100 = 71%.

let me know if any part of that doesn't make sense

3 0
3 years ago
HELP PLEASE, I'M BEING TIMED!!!!!!!!!!!!
Kazeer [188]

Answer:

4.

Step-by-step explanation:

180-34×2 = 112. I will skip with the details.

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3 years ago
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