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3 years ago

Let f(x) = 2x +2. solve f -1 (x) when x = 4

Mathematics

1 answer:

Dafna1 [17]3 years ago

8 0

If y = f(x), then f⁻¹(y) = x.

We have f(x) = 2x + 2, so that f(x) = 4 when

2x + 2 = 4

2x = 2

x = 1

So we know f(1) = 4.

Then this means 1 = f⁻¹(4).

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The nth term of a sequence is 3n squared. What is the 15th term

BabaBlast [244]

Answer:

2025

Step-by-step explanation:

3n² is our nth term

n=15

thus....

(3×15)²

= 45²=2025

Hopefully this helped- have a great day)

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2 years ago

3x + 2y = 6 4x + y = 1 Solve the system of equations.

likoan [24]

3x+2y=6 -
8x+2y=2
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-5x=4
x=-4/5

-2.4+2y=6
y=8.4

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3 years ago

Walter from a leaking faucet is dripping into a cylindrical cup. The weight of water in inches, why, after x hours is graphed be

Anastasy [175]

Answer:

CStep-by-step explanation:

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2 years ago

How do you solve it?

MatroZZZ [7]

Answer:

i: x=-2, x=1

ii: x=-1/2

Step-by-step explanation:

Quadratic form:

You solve i by using FOIL (First, Outside, Inside, Last) because it is a multiplication problem.

$(x+2)(x-1)=0$

"first" would be $x*x$ , which would equal $x^{2}$

"outside" would be $x*-1$ , which would equal $-1x, or -x$

"inside" would be $2*x$ , which would equal $2x$

"last" would be $2*-1$ , which would equal $-2$

Now you need to combine the terms so that they are one after the other

$x^{2}-x$ $+2x-2$

Combine like terms, and you should get:

$x^{2} +x-2$

i Solution

You need to get the variable by itself.

Subtract two from both sides

$x+2=0\\x=-2$

Add one to both sides.

$x-1=0\\x=1$

ii Solution

Add all the terms.

$x+2+x-1=0\\2x+1=0\\2x=-1\\x=-\frac{1}{2}$

8 0

3 years ago

You are making bouquets to sell. You have 60 roses, 84 daisies, and 24 lilies. Each bouquet will have the same number of each ki

laiz [17]

You can make 6 bouquets. Each bouquet will have 10 roses, 14 daisies, and 4 lilies.
The math:
FIND THE GREATEST COMMON FACTOR
60/6=10--->10 ROSES
84/6=14--->14 DAISIES
24/6=4--->4 LILIES

Hope this helped!

7 0

3 years ago