3 years ago

If f(x)=2x-4and g(x)=x^2 what is f(g(x))

Mathematics

1 answer:

DerKrebs [107]3 years ago

7 0

F(g(x))
sub g(x) for every x in f(x)

f(g(x))=2(g(x))-4
f(x^2)=2(x²)-4
f(g(x))=2x²-4

You might be interested in

How many flowers, spaced every 3 in., are needed to surround a circular garden with a 150-ft radius? Use 3.14 for pi.

BARSIC [14]

Answer:

$3,768\ flowers$

Step-by-step explanation:

step 1

Find the circumference of the circular garden

The circumference of the circle is equal to

$C=2\pi r$

we have

$r=150\ ft$

$\pi=3.14$

substitute the values

$C=2(3.14)(150)=942\ ft$

step 2

<em>Convert feet to inches</em>

Remember that

$1\ ft=12\ in$

$942\ ft=942*12=11,304\ in$

step 3

Divide the circumference by 3 in to calculate the number of flowers

$11,304/3=3,768\ flowers$

5 0

3 years ago

Find the surface area of a cylinder with a height of 9 inches and base radius of 4 inches.

iren [92.7K]

A=2(pi)rh+2(pi)r^2= 2•pi•4•9+2•pi•4^2

~326.72564

8 0

3 years ago

What is the difference of the fractions? 3StartFraction 13 over 15 EndFraction – 1Four-fifths 2One-fifteenth 2Five-fifteenths 2S

ehidna [41]

Answer:

2One-fifteenth

Step-by-step explanation:

$3\frac{13}{15} - 1\frac{4}{5}$

$2\frac{13 - 12}{15}$

2 $\frac{1}{15}$

4 0

3 years ago

If f(x)= x^2-2x and g(x)= 6x+4, for which value of x does (f+g)(x)=0

shepuryov [24]

$f(x)=x^2-2x;\ g(x)=6x+4\\\\(f+g)(x)=(x^2-2x)+(6x+4)=x^2+4x+4$

$(f+g)(x)=0\iff x^2+4x+4=0\\\\x^2+2x+2x+4=0\\\\x(x+2)+2(x+2)=0\\\\(x+2)(x+2)=0\\\\(x+2)^2=0\iff x+2=0\ \ \ |-2\\\\\boxed{x=-2}$

3 0

3 years ago

Solve. HELP ASAP. IN A HURRY.

olga_2 [115]

-9 9/19
4 1/2-5 1/8=19/24
7 1/2 divided by 19/24=-9 9/19
i THINK if it’s wrong so sorry

7 0

3 years ago