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mr Goodwill [35]

3 years ago

6

What is f(−1) for the function given? f(x)=x2−3x+8

1 answer:

Mnenie [13.5K]3 years ago

6 0

Answer:

12

Step-by-step explanation:

I am assuming you are asking for f(x)=x^2-3x+8? You plug (-1) in for all portions of x. This means you get (-1)^2-3(-1)+8. (-1)^2 is simply 1 because -1 x -1=1. 3*-1 is -3. This makes the equation 1 - (-3) + 8. The middle section simplifies down to +3 making it 1+3+8, or 12.

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A circle with center C (4, -2) contains the point D(8,1) what is the equation for the line perpendicular to the radius of the ci

tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

slope of line passing through C and D is

$m=\frac{1+2}{8-4} =\frac{3}{4} \\$

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$y+2=-\frac{4}{3} (x-4)\\3y+6=-4x+16\\4x+3y=10$

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3 years ago

Tyron takes 3/4 hour to paint a wall. His brother takes 1/3 of the time he takes. How long will his brother take to paint 5 simi

Ludmilka [50]

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3 years ago

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4 years ago

N^2+7n+15=5<br> show work please

ElenaW [278]

<span>n^2+7n+15=5
n^2 + 7n + 10 = 0
(n + 5)(n + 2) = 0
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Answer: n = -5 and -2</span>

4 0

4 years ago

Read 2 more answers

A landscaper is comparing the costs of potted plants from two nurseries. Nursery P charges $15 per plant plus a $50 delivery fee

photoshop1234 [79]

Answer:

The required number of plants is 10.

Step-by-step explanation:

Nursery P charges $15 per plant plus a $50 delivery fee on any order. Nursery Q charges $20 per plant and no delivery fee.

If x number of plants that must be delivered for the total cost to be the same at both nurseries, then

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4 years ago