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Brrunno [24]
3 years ago
15

What is the slope of a line that is perpendicular to a line whose equation 3y=-4x+2

Mathematics
1 answer:
tino4ka555 [31]3 years ago
5 0

For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1. That is to say:

m_ {1} * m_ {2} = - 1

We have the following equation:

3y = -4x + 2\\y = - \frac {4} {3} x + \frac {2} {3}

Thus, the equation is of the pending-intersection formy = mx + b

Where:

m: It's the slope

b: It is the cut-off point with the y axis

We have to:

m_ {1} = - \frac {4} {3}

Thus, we find m_ {2}:

m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {- \frac {4} {3}}\\m_ {2} = \frac {3} {4}

Thus, the slope of the line perpendicular to the given line is:

m_ {2} = \frac {3} {4}

ANswer:

m_ {2} = \frac {3} {4}

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Find the area A of the sector of a circle of radius 90 in formed by central angle 1/6 radian.
miv72 [106K]

Answer:

2121 in^{2} Rounded to the nearest inch.

Step-by-step explanation:

A = \pi r^{2}  Is the formula for a circle, but we only have a portion of a circle so we will have to adjust the formula for a part of the circle.

A = \frac{\frac{\pi }{6} }{2\pi } \pi r^{2}  The \frac{\pi }{6} is the part of the circle and the whole circle is 2\pi

\frac{\frac{\pi }{6} }{2\pi } is the same as \frac{\pi }{6}÷\frac{2\pi }{1} Which is the same as \frac{\pi }{6} x \frac{1}{2\pi } Which is the same a \frac{1}{12}

A = \frac{1}{12}\pi90^{2}

A = \frac{1}{12}(3.14)(90)(90) = 2119.5.  When you use the \pi on your calculator you get a slightly different number.  This is due to rounding.

A = 2120.575041

5 0
2 years ago
Solve for x. <br><br> 8x/7+9=30
kodGreya [7K]
X=18 (3/8)
(8x/7) +9 = 30
subtract 9 from both sides
8x/7=21
multiply 7 from both sides
8x=147
divide 8 from both sides and you get
x=18 (3/8)
6 0
3 years ago
If 6 1/4 of potatoes cost 40.75 how much would one pound cost
Darya [45]

Answer 6 dollars and 52 cents

Step-by-step explanation: 6 1/4 = (6.25)

40.75/6.25 = 6.52 per unit price

6 0
3 years ago
A certain shop repairs both audio and video components. Let A denote the event that the next
alexdok [17]

Answer:

0.12 is the required probability.

Step-by-step explanation:

We are given the following in the question:

A: next  component brought in for repair is an audio component

B: event that the next component  is a compact disc player

B \in A

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We have to evaluate:

P(B|A) = \dfrac{P(B\cap A)}{P(A)}\\P(B|A) = \dfrac{P(B)}{P(A)}\\\\P(B|A) = \dfrac{0.05}{0.6} = 0.12

0.12 is the required probability.

3 0
3 years ago
Find the volume of a cone with radius 28 and height 44.
Brut [27]
The volume formula for a cone is V = 1/3 pi r^2 h.  We have everything we need to find the volume. V = 1/3 pi 28^2* 44.  Doing that math and leaving it in terms of pi you have that the volume is 11,498.67 pi units cubed.  If you multiply pi in, the answer would be 36,123.06 units cubed.
4 0
3 years ago
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