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yulyashka [42]
2 years ago
11

What is the variable of f(3) in the function below? f(x) =2^x

Mathematics
2 answers:
Lyrx [107]2 years ago
7 0

\frak{Hi!}

\orange\hspace{300pt}\above2

                              <u>We have the expression -:</u>

                             \boldsymbol{\sf{f(x)=2^x}}, <u>and we're asked to find</u>

                             \boldsymbol{\sf{f(3)}}.

                             <u>To do that we put in the value for x</u> (3)-:

                             \boldsymbol{\sf{f(3)=2^3}}.

                             <u>Evaluate-:</u>

                             \boldsymbol{\sf{f(3)=2\times2\times2=8}}

\orange\hspace{300pt}\above3

Lady bird [3.3K]2 years ago
4 0

Hello !

We replace x by 3.

f(3) =  {2}^{3}  = 8

Have a nice day ;)

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A projectile with an initial velocity of 48 feet per second is launched from a building 190 feet tall. The path of the projectil
Furkat [3]

Answer:

t = 5.25 seconds

Step-by-step explanation:

Given that,

A projectile with an initial velocity of 48 feet per second is launched from a building 190 feet tall. The path of the projectile is modeled using the equation:

h(t)=-16t^2+48t+190

It is assumed to find the time when the projectile will hit the ground. When the projectile hit the ground, its height is equal to 0 such that,

-16t^2+48t+190=0

It forms a quadratic equation such that,

t=\dfrac{-b+\sqrt{b^{2}-4ac } }{2a},\dfrac{-b-\sqrt{b^{2}-4ac } }{2a}\\\\t=\dfrac{-48+\sqrt{(48)^{2}-4\times (-16)(190) } }{2\times (-16)},\dfrac{-48-\sqrt{(48)^{2}-4\times (-16)(190) } }{2\times (-16)}\\\\t=-2.25, 5.25

So, the projectile will hit the ground at t = 5.25 seconds.

3 0
3 years ago
Read 2 more answers
The following polynomial has factors (x + 8) and (3x + 2). Determine the value of k. −6x^3-55x^2+kx−16
RoseWind [281]

Answer:

<h2>k = - 58</h2>

Step-by-step explanation:

Since (x + 8) and (3x + 2) are factors of the polynomial it means that if either one of them is equated to zero and substituted into the polynomial will give us zero

Using x + 8

We have

x + 8 = 0

x = - 8

Substitute the value of x into the polynomial

- 6x³ - 55x² + kx - 16

That's

- 6(-8)³ - 55(-8)² + k(-8) - 16 = 0

-6(-512) - 55(64) - 8k - 16 = 0

Expand

3072 - 3520 - 8k - 16 = 0

Simplify

- 464 - 8k = 0

8k = -464

Divide both sides by 8

k = - 58

Hope this helps you

6 0
2 years ago
Johnny is reading a novel for the read-a- Thon. The ratio of the number of pages she read to the pages that remain to be read is
mart [117]
There are several ways to answer this question and I will use this approach. Since Johnny reads at a ratio of 7:3 it can be stated that for every 10 pages in a book containing 500 pages Johnny will read 7 of those pages. There are 50 groups of 10 in a 500-page book (50 x 10). Take the ration 7:3 times 50 and use the distributive property:  7:3(50) = (7 x 50):(3 x 50) = 350:150. Based on this Johnny has read 350 pages and has 150 pages remaining.
7 0
3 years ago
Dana is playing a game where she loses 75 points every time she rolls an even number. She starts with 0 points. Then she rolls a
slavikrds [6]

Answer:

-375

Step-by-step explanation:

-75 * 5

= -375.

3 0
2 years ago
I don't understand what the "!"s mean. Help please
kakasveta [241]

n! is called a factorial.


It would look something like this: n! = 1·2·3·...·n


An example:

5! = 1·2·3·4·5 = 120

6 0
2 years ago
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