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kotegsom [21]
3 years ago
13

What is the y-intercept of the line perpendicular to the line y = 3/4x + 3 that includes the point (-3, -3)

Mathematics
1 answer:
kipiarov [429]3 years ago
6 0
A perpendicular line has an opposite reciprocal slope. This means that the new line will have a slope of -4/3x. Plug in x and y into the equation y=Mx +b where m is the slope (-4/3):
-3=(-3/4)(-3) + b
and isolate b:
b-3=(-3/4)(-3)
b=(-3/4)(-3) +3
b=9/4+3
b=21/4

The final equation is y= -4/3x + 21/4
The y intercept is (21/4).
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The answer is B, because you will have to multiple 42 by 7 to see how much money he will have in 7 weeks and then you will have to subtract 8 × 8.25 to see how much money he spent on his vacation.
5 0
3 years ago
What is an equation of a circle with center (2,7) and radius 4?
goblinko [34]

Equation of a circle:

(x - h)^2 + (y - k)^2 = r^2


In this case:

<span>center (2,7) and radius 4 so h = 2, k = 7 and r = 4

</span>Equation:

(x - 2)^2 + (y - 7)^2 = 4^2

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Hope it helps.

8 0
3 years ago
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irinina [24]
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3 0
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if a chocolate cake is divided into six equal and each has 280 calories, how many calories are in the whole cake
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3 0
3 years ago
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eduard
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