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Anna35 [415]
3 years ago
9

Solve the system by substitution. y = -5x - 40 y = 5x

Mathematics
1 answer:
Gnesinka [82]3 years ago
8 0

Step-by-step explanation:

I hope this helps...........

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Select the correct answer Which equation represents a line that is perpendicular to line MN?
taurus [48]

Answer:

D. y = 4x - 6

Step-by-step explanation:

The equation that is perpendicular to the line MN should have a slope that when multiplied by the slope of line MN will result to negative one. Therefore,

Therefore,

m₁ × m₂ = -1

Using the 2 coordinates of MN let's find the slope,

(-7, 6)(5, 3)

Therefore,

m₁ = 3 - 6 / 5 - (-7) = -3 / 12 = - 1 / 4

The equation that represent a line perpendicular to the line MN is

y = 4x - 6 because the slope slope(m₂) is 4.

From our formula,

4 × - 1 / 4 = - 1

So, option D meets the requirement.

6 0
3 years ago
Luke correctly graphs the fundamental period of the function f(x)=sinx.
aleksandrvk [35]

Answer:

Period is 2pi

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6 0
3 years ago
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Jim bought a fishing rod for $42. This price was 70% of the original price. What was the original price?
Dmitry [639]

Answer:

54.6

Step-by-step explanation:

42 =  70%

100% - 70% = .30%

42 x 1.3 = 54.6

 

5 0
3 years ago
If you make $20 per hour, how many hours did you work if you earned
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Answer: 8 hours

If you are making 8 dollars an hur you need to go find another job

Step-by-step explanation:

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PLEASE HELP! (Sorry about the picture)
Ganezh [65]

I think the answer is the Last one


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