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3 years ago

What is the solution of the system of equations

Mathematics

1 answer:

Alona [7]3 years ago

5 0

Answer:

A solution to a system of equations means the point must work in both equations in the system. So, we test the point in both equations. It must be a solution for both to be a solution to the system.

Step-by-step explanation:

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Which is the inverse of the function f(x) = x - 9?АО1f-1(x) =x + 9B.f-'(x) = x + 9CO $-+(x) = 9 - *D.F-'-) =-X-9

kirill [66]

To solve for the inverse of the function given;

$f(x)=x-9$

We begin by re-writing the function as follows;

$y=x-9$

To now find the inverse, we interchange y for x, and vice versa, as shown below;

$\begin{gathered} y=x-9 \\ \text{Now becomes;} \\ x=y-9 \end{gathered}$

We now find the value of y;

$\begin{gathered} x=y-9 \\ \text{Add 9 to both sides;} \\ x+9=y-9+9 \\ x+9=y \\ y=x+9 \\ \text{Therefore;} \\ f^{-1}(x)=x+9 \end{gathered}$

ANSWER:

The correct answer is option B;

$f^{-1}(x)=x+9$

8 0

1 year ago

What is the mode of this data set?<br> {8, 11, 20, 10, 2, 17, 15, 5, 16, 15, 25, 6}

maks197457 [2]

Mode is the number that appears most in a set of numbers. Every number appears once besides 15 which appears twice so 15 would be the mode.

7 0

3 years ago

Read 2 more answers

Alexis put $2000 in a savings account. After 4 years, she had $2543 in the account. What rate of interest did she earn? Use the

natta225 [31]

Alrighty

P=2000
A=2543
t=4

$A=Pe^{rt}$
$2543=2000e^{4r}$
solve

$2543=2000e^{4r}$

divide both sides by 2000

$\frac{2543}{2000}=e^{4r}$

take ln of both sides

$ln(\frac{2543}{2000})=ln(e^{4r})$

$ln(\frac{2543}{2000})=(4r)ln(e)$

$ln(\frac{2543}{2000})=(4r)(1)$

$ln(\frac{2543}{2000})=4r$

divide both sides by 4

$\frac{ln(\frac{2543}{2000})}{4}=r$

use your calculator

0.060049=r
convert to percent
that is about 6%

the interest rate is 6%

3 0

3 years ago

Read 2 more answers

The person who answers this will get brainliest, also a five start rating, and a thank you!

Sladkaya [172]

1. Given
2. Definition of midpoint
3. Definition of midpoint
4. Definition of vertical angles
5. Vertical angles are congruent
6. SAS
7. CPCTC

8 0

3 years ago

You purchase pair of pants for $34.60 and a shirt for $12.30. If you need to pay 8% sales tax, what is the final price?

pantera1 [17]

Answer:

34.60+12.30=46.90

46.90/100=0.469

0.469*8=$3.75

7 0

4 years ago

What is the solution of the system of equations​

What is the solution of the system of equations