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Lelechka [254]
3 years ago
6

Which function is the inverse of f(x) = 2x + 3?

Mathematics
1 answer:
dedylja [7]3 years ago
3 0

Answer: \frac{x-3}{2}

Step-by-step explanation:

f(x)=2x+3\\y=2x+3\\x=2y+3\\x-3=2y\\\frac{x-3}{2}=y

You might be interested in
kendra has $7.10 in nickels and quarters. if she has 143 more quarters than nickels how many of each coin does she have
Norma-Jean [14]

Answer:

Nickel = 12

Quarters = 26

Step-by-step explanation:

Given

<em>Represent Nickel with N and Quarters with Q</em>

Q = 14 + N   --- <em>It's 14 more quarters; not 143</em>

Worth = \$7.10

Required

Determine the quantity of each coin

First, we have to know that:

0.25Q + 0.05N = 7.10 -- (1)  ---- By converting N and Q to dollars;

Q = 14 + N

Substitute 14 + N for Q in (1)

0.25(14 + N) + 0.05N = 7.10

Open Brackets

3.5 + 0.25N + 0.05N = 7.10

Collect Like Terms

0.25N + 0.05N = 7.10 - 3.5

0.3N = 3.6

Divide through by 0.3

N = 3.6/0.3

N = 12

Recall that:

Q = 14 + N

Q = 14 + 12

Q = 26

5 0
4 years ago
Camden is taking a multiple choice test with a total of 50 points available. Each question is worth exactly 5 points. What would
FromTheMoon [43]

Answer:

40 points

Step-by-step explanations

divide 50 by 5 to get the number of answers

you get 10 answers so then you subtract 2 and get 8

times that by 5 and you get the answer 40

5 0
4 years ago
Solve for 1/3(x+2)=2/3x+4
Norma-Jean [14]

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

1

3

(x+2)=

2

3

x+4

Answer:

x=−10

8 0
4 years ago
What is the solution to the equation 3/<br> x+4+3/2x+8 = 0?
mixas84 [53]

Answer:

X= -4

Step-by-step explanation:

^ you have to isolate the radical than raise each side to the power of its index which gets you

x= -4

5 0
3 years ago
Can someone help me solve this
Ipatiy [6.2K]

Answer:

∠ 6 = 38°

Step-by-step explanation:

∠6 and 38° are vertical and congruent, thus

∠ 6 = 38°

3 0
3 years ago
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