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3 years ago

If f(x) = 2x2, what is f(a+3)?

Mathematics

1 answer:

Bond [772]3 years ago

4 0

Answer:

Step-by-step explanation:

2×2=4 and 4+3is 7533292928£82(82828#9#8£36628283782827

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A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = -16t2 + 20t + 6 where t is the

makkiz [27]

$f(t)=h=-16t^2+20t+6

$

a=-16, b=20, c =6

Δ= $b^2-4ac=20^2-4*(-16)*6=400+384=784$

$\sqrt{Δ}=\sqrt{784}=28$

max:

$p=-\frac{b}{2a}=-\frac{20}{-32}=\frac{20}{32}=\frac{5}{8}$

max heigh: $h=-16(\frac{5}{8})^2+20*\frac{5}{8}+6=-16\frac{25}{64}+\frac{100}{8}+6$

$h=-\frac{25}{4}+\frac{50}{4}+6=\frac{-25+50+24}{4}=\frac{49}{4}$

$h=\frac{49}{4}$ at $t=\frac{5}{8}s$

will fall down at t:

$t=\frac{-20-28}{-32}=\frac{-48}{-32}=\frac{3}{2}=1.5$

$t=1.5s$

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3 years ago

How much does cell phone weigh

noname [10]

In 2005 he average weight is 4 ounces, they have gotten bigger since, clearly, but that is the average weight.
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5 0

3 years ago

Read 2 more answers

Express 5% as a decimal number.

Scrat [10]

Answer:

.05

Step-by-step explanation:

.05 as a decimal is 5% of 1

3 0

3 years ago

Read 2 more answers

Which of the following statements is true ? HELLLLP ASSSSAPP TRYAN GRADUATE UKKK

Soloha48 [4]

Answer:

Both are irrational

Step-by-step explanation:

$\sqrt{\frac{4}{9} }$ is a trick as it does simplify to $\frac{2}{3}$ , but that is irrational

4 0

3 years ago

I need help graphing 2x - 6y = 42 I'm just really lazy

solong [7]

Answer:

We can use slope intercept form to get the points needed. Y= -7+1/3x The points are (0,-7) and (3,-6)

Step-by-step explanation:

Subtract 2x from the left side and place it over to the right side with the 42. Now we have -6y= 42-2x. From here we divide by -6 and we get y= -7+1/3x. We know that are slope is 1/3 which the one is the rise and the 3 is the run. We also know that our y intercept is -7. We plot the points at (0,-7) and (3,-6)

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3 years ago