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Zinaida [17]
3 years ago
15

The equation for line j can be written as y=2x + 8. Another like k is perpendicular to line j and passes through the point (6,-6

). Choose the equation for like k
A. Y= 1/2x-3
B. Y= -1/2x-3
C. Y=-2x-3
D. Y=-3/2x + 3
Mathematics
1 answer:
Semmy [17]3 years ago
7 0

Answer:

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 2x + 8 ← is in slope- intercept form

with slope m = 2

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{2}, thus

y = - \frac{1}{2} x + c ← is the partial equation

To find c substitute (6, - 6) into the partial equation

- 6 = - 3 + c ⇒ c = - 6 + 3 = - 3

y = - \frac{1}{2} x - 3 ← equation of line k

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Find the surface area S of the following cylinder.
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Answer:

384π

Step-by-step explanation:

From the diagram,

Diameter ( d ) = 16

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Surface area of Cylinder = 2πr ( r + h )

= 2π x 8 ( 8 + 16 )

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3 years ago
An electrician charges a $100 flat fee, plus $75 per hour to work on a house.
jek_recluse [69]

Answer:

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Step-by-step explanation:

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2 years ago
A die is rolled 20 times. given that three of the rolls came up 1, five came up 2, four came up 3, two came up 4, three came up
Serjik [45]

Solution:

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1 - 3=A

2 - 5=B

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= 720 × 6×120×24×72→→[Keep in Mind →n!= n (n-1)(n-2)(n-3)........1]

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8 0
3 years ago
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Harlamova29_29 [7]
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6 0
3 years ago
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natulia [17]
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4 0
3 years ago
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