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Alexxandr [17]
3 years ago
8

Given f(x)=2\x^2-8x+36,find f(-4)

Mathematics
1 answer:
Keith_Richards [23]3 years ago
8 0
\frac{2}{(-4)^2-8(-4)+36} = \frac{2}{16+32+36} = \frac{1}{42}
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What is the approximate length of the radius, r? Use 3. 14 for. Round to the nearest inch. 12 inches 24 inches 38 inches 46 inch
yulyashka [42]

Answer:

협의회는 지난 해 올해

Step-by-step explanation:

업 하고 있는 것 같은 기분 좋은 시간 보내고 왔습니다 그리고 저는 이렇게 잘 지내고 있습니다 저는 너무 힘들고 또 제 자신이 정말 많은 것 같아요

4 1
2 years ago
A cup of coffee has approximately 310 mg of caffeine. Each hour, the caffeine in your system decreases by about 35%. How much ca
Alex787 [66]

Answer:

∴35.97 mg caffeine would be left in the system after 5 hours.

Step-by-step explanation:

Given that,

A cup of coffee has approximately 310 mg of caffeine.

Caffeine decrease at a rate 35% per hour.

Exponential Function:

y(t)=y_0(1-r)^t

y(t)= Amount caffeine after t hours

y_0= Initial amount of caffeine

r= rate of decrease

t = Time in hour.

Here y(t)=?, y_0 = 310 mg, r=35%=0.35, t= 5 hours

y(t)=310(1-0.35)^5

      =35.97 mg

∴35.97 mg caffeine would be left in the system after 5 hours.

3 0
3 years ago
What is the equation of a line that contains the points (8, –3) and (–8, 3)?
DerKrebs [107]

Answer:

1. D y = 8

2. C y = −8

Step-by-step explanation:

1.Both points have y-coordinate 8, so the line is horizontal.

A horizontal line has equation y = k

where k is the y-coordinate of all of its points.

The y-coordinate of all points on this line is 8.

Answer: y = 8

2.A line with 0 slope is a horizontal line. All points on a horizontal line have the same y-coordinate.

A horizontal line has equation

y = k

where k is the y-coordinate of all of its points.

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Answer: y = -8

8 0
3 years ago
Can someone help me i cant understand with work
Masja [62]

Answer:

Right now it would be

-40

Since desend means down add -20 to -40

-40+(-20)=-60

         or

-40-20=-60

Then is goes up 35, which is positive

-60+35=-25

Therefore, the answer is -25

Hope this helps

Answer by

<em>Fishylikeswater</em>

<em></em>

3 0
3 years ago
Read 2 more answers
Martin uses 5/8 of a gallon of paint to cover 4/5 of a wall. What is the unit rate at which Martin paints in walls per gallon?
Papessa [141]

Answer:

The unit rate is 32/25 Walls per gallons.

Step-by-step explanation:

Gallons of paint used by Martin =  5/8 gallons

Portion of wall Martin wants to paint in pints = 4/5 wall.

Rate at which Martin paints the wall: Rate =  Portion of wall covered/Paints Used.

Rate = 4/5 Gallons/5/8 Gallons = 32/25 Wall Gallons.

8 0
2 years ago
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