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lisabon 2012 [21]
2 years ago
7

"If you subtract18 from my number and multiply the difference by -4 ​, the result is ​-40." What is ​my number

Mathematics
1 answer:
Dmitry [639]2 years ago
4 0
I actually don’t kno so don’t use this i just need points , ill do research and come back and help u
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I need help or the answer​
loris [4]

Answer:

5x+4y = 52

Step-by-step explanation:

We can first write the equation in point slope form

y-y1 = m(x-x1) where m is the slope and (x1,y1) is the point

y - 8 = -5/4 ( x-4)

Multiply each side by 4 to get rid of the fraction

4(y - 8) = 4*(-5/4) ( x-4)

4(y - 8) = -5 ( x-4)

Distribute

4y - 32 = -5x+20

We want the equation in the form

Ax + By = C

Add 5x to each side

5x+4y -32 = -5x+5x+20

Add 32 to each side

5x+4y -32+32 =32+20

5x+4y = 52

4 0
2 years ago
What is the difference between linear pair supplementary angle and straight angle?
Ivenika [448]
They both are 180 degrees.

One possible difference is that a straight angle is just a single angle measuring 180 degrees, while a linear pair supplementary angle are pairs of adjacent angles that add up to 180 degrees.
3 0
3 years ago
Please help I think it's A but im unsure
Likurg_2 [28]

Answer:

b is the correct answer I am also not sure

5 0
3 years ago
Sally invests $5000 in an account earning 8% interest, compounded continuously. After how many years will she double her investm
juin [17]
Double is double, so you can solve
.. 2 = 1*e^(.08t)
and get the correct value of t.

Taking logs,
.. ln(2) = .08t
.. ln(2)/.08 = t ≈ 8.7 . . . . years
6 0
2 years ago
Read 2 more answers
What is the slope of the line represented by the equation y = -1/2x + 1/4?
Murrr4er [49]

Answer:

<em>m=-1/2</em>

Step-by-step explanation:

The equation is in y=mx+b form. M is the slope. In this equation, -1/2 is m.

Therefore the slope is -1/2.

7 0
3 years ago
Read 2 more answers
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