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Arlecino [84]
3 years ago
6

Find f(-2). 4 8 10 20

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
3 0

Answer:

The f(-2) is 20.

Step-by-step explanation:

f(x) = 2x^2 - 3x + 6

We have to find the f(-2),

f(-2) = 2×(-2)^2 - 3×(-2) + 6

f(-2) = 8 - (-6) + 6

f(-2) = 8 + 6 + 6

f(-2) = 20.

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If a ball is thrown into the air with a velocity of 34 ft/s, its height (in feet) after t seconds is given by y = 34t − 16t2. Fi
Finger [1]

<u>ANSWER: </u>

If a ball is thrown into the air with a velocity of 34 feet per second, then velocity of the ball after 1 second is 2 feet per second

<u>SOLUTION: </u>

Given, a ball is thrown into the air with a velocity of 34 feet per second

Initial velocity (u) = 34 feet per second

And also given a relation between displacement and time = \mathrm{y}=34 \mathrm{t}-16 \mathrm{t}^{2} --- eqn 1

We need to find the velocity when t = 1 ; v = ?

We know that, v = u + at and \mathrm{s}=\mathrm{ut}+\frac{1}{2} \mathrm{at}^{2}

where v is instantaneous velocity and u is initial velocity

a is acceleration

t is time interval  

s is displacement

using the displacement and time relation eqn (1) we get

Now, when t = 1, displacement s = 34(1) – 16(1)

\mathrm{ut}+\frac{1}{2} \mathrm{at}^{2}=34-16

34 \times 1+\frac{1}{2} \times a \times 1^{2}=18

34+\frac{a}{2}=18

\begin{array}{l}{\frac{a}{2}=18-34} \\\\ {\frac{a}{2}=-16} \\ {a=-16 \times 2} \\ {a=-32}\end{array}

here, -ve sign indicates that object is in deceleration . so acceleration is -32 ft/s

now put a value in v = u + at

v = 34 + (-32)(1)

v = 34 – 32

v = 2 ft/s

Hence, velocity of the ball after 1 second is 2 ft/s

6 0
3 years ago
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3 years ago
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Reflect shape A in the line y = x.
marshall27 [118]

Answer:

I didn't know and I tried ‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️‍♂️

8 0
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2. The sum of three consecutive integers is 48. What are the three integers?
Natasha2012 [34]

Answer: 15, 16, 17

Step-by-step explanation: you have to divide 48 by 3 when you do this then you get the center number in this case 16 so all you have to do now is add the lower number (15) and the higher number (17) and add and they will equal 48

hope this helps please mark brainliest if it helps

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3 years ago
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The answer is d. i hope this helps!
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