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faltersainse [42]
3 years ago
10

What is the value of the expression –5x4 when x = –2?

Mathematics
1 answer:
igomit [66]3 years ago
4 0
It is definitely c, 80
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7 0
3 years ago
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Which equation represents the line that is perpendicular to and passes through (-40,20)?
emmasim [6.3K]

The equation of the perpendicular line to the given line is: y = -5/4x - 30.

<h3>What is the Equation of Perpendicular Lines?</h3>

The slope values of two perpendicular lines are negative reciprocal of each other.

Given that the line is perpendicular to y = 4/5x+23, the slope of y = 4/5x+23 is 4/5. Negative reciprocal of 4/5 is -5/4.

Therefore, the line that is perpendicular to it would have a slope (m) of -5/4.

Plug in m = -5/4 and (x, y) = (-40, 20) into y = mx + b to find b:

20 = -5/4(-40) + b

20 = 50 + b

20 - 50 = b

b = -30

Substitute m = -5/4 and b = -30 into y = mx + b:

y = -5/4x - 30

The equation of the perpendicular line is: y = -5/4x - 30.

Learn more about about equation of perpendicular lines on:

brainly.com/question/7098341

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8 0
1 year ago
8 less than one third of x is y.
Andre45 [30]
1/3x - 8 = y <== ur equation

4 0
3 years ago
Read 2 more answers
Please help me it’s due today and idk math .
Ulleksa [173]

Answer:

you need to ask one bye one. easyer for us

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3 years ago
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