2 years ago

Keith used the following steps to find the inverse of f, but he thinks he made a error

Mathematics

1 answer:

astra-53 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

$\Large \boldsymbol{} f(x) \ \ inverse \ \ function \ \ (f(x))^{-1} \\\\ y=7x+5 \\\\x=7y+5 \\\\ y=\dfrac{x-5}{7} \ \ or \ \ f(x)^{-1}= \dfrac{x-5}{7}$

You might be interested in

When working through limit problems, why must you write the limit statement every time until you evaluate the equation?

Softa [21]

Because that how it goes

8 0

3 years ago

9. Solve for x: 2x – y = (3/4)x + 6.

AlekseyPX

Answer:

x = 4(y + 6)/5

Step-by-step explanation:

2x - y = (3/4)x + 6

2x - (3/4)x = y + 6

(8x - 3x)/4 = y + 6

5x/4 = y + 6

5x = 4(y + 6)

5x = 4y + 24

x = (4y + 24)/5

Therefore, x = 4(y + 6)/5

4 0

3 years ago

Simplify the expression by using a double-angle formula. 2 sin 31°cos 31°

qwelly [4]

The double angle formula for the sine is

$\sin(2x) = 2\sin(x)\cos(x)$

The right hand side is exactly your expression, where $x = 31^\circ$

So, rewriting the expression from right to left, we have

$2\sin(31^\circ)\cos(31^\circ) = \sin(2\cdot 31^\circ) = \sin(61^\circ)$

6 0

3 years ago

Which number in the monomial 125x^18y^3z^25 needs to be changed to make it a perfect cube

Oksana_A [137]

Hi,

You just have to change z^25 to z^24 or z^27.

$125x^{18}y^3z^{24}=(5x^6*y*z^8)^3$

4 0

3 years ago

Read 2 more answers

What is 1+1? I wonder if anyone would answer this cause no one seems to see my questions

stealth61 [152]

Your answer is gonna be two

7 0

3 years ago

Read 2 more answers