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xxTIMURxx [149]
3 years ago
10

Find f(2) if f(x) = 2^x +3

Mathematics
2 answers:
alexira [117]3 years ago
8 0

Answer:

f(2)=7

Step-by-step explanation:

Plug it in

f(x)=2^x+3

f(2)=2^2+3

f(2)=4+3

f(2)=7

If this helps please mark as brainliest

Soloha48 [4]3 years ago
4 0

Answer:

f(2) = 7

Step-by-step explanation:

The answer is found by plugging in the value of f(2) in to the equation for f(x):

f(2) = 2^(2) + 3

First calculate the exponents.

f(2) = 4 + 3

Then simplify.

f(2) = 7

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2 years ago
A ball is thrown from an initial height of 2 feet with an initial upward velocity of 31 ft/s. The ball's height h (in feet) afte
Vlad1618 [11]

A quadratic equation is in the form of ax²+bx+c. The time at which the height of the ball is 16 feets is 0.717 seconds and 1.221 seconds.

<h3>What is a quadratic equation?</h3>

A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers. It is written in the form of ax²+bx+c.

The complete question is:

A ball is thrown from an initial height of 2 feet with an initial upward velocity of 31 ft/s. The ball's height h (in feet) after 7 seconds is given by the following, h=2+31t-16t². Find all values of t for which the ball's height is  16 feet. Round your answer(s) to the nearest hundredth.

The time at which the height of the ball is 16 feet can be found by,

h = 2 + 31t - 16t²

16 = 2 + 31t - 16t²

16 - 2 - 31t + 16t² = 0

16t² - 31t + 14 = 0

t = \dfrac{-(-31)\pm \sqrt{(-31)^2-4(16)(14)}}{2(16)}\\\\

t = 0.717 , 1.221

Hence, the time at which the height of the ball is 16 feets is 0.717 seconds and 1.221 seconds.

Learn more about Quadratic Equations:

brainly.com/question/2263981

#SPJ1

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2 years ago
Can Someone Please Help Me With These 2 Problems I Tried Looking Up Videos On How To Get It &amp; I'm Just Confused
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I am attaching an image with the two solutions represented by the blue areas highlighted in your original graphs. Let me know if you have questions.

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3 years ago
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