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olganol [36]
3 years ago
8

Can someone help me?

Mathematics
1 answer:
Maslowich3 years ago
7 0

Answer:

4. .88

5. 17/9

6. 67/12

7. 47/56

8. 209/45 or 4 29/45, 4.64

9. 143/30

Step-by-step explanation:

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What is the inverse of f(x)=3x+6 ?
scZoUnD [109]

Answer:

\boxed{\sf \ \ f^{-1}(x)=\dfrac{x-6}{3} \ \ }

Step-by-step explanation:

hello,

we can write

fof^{-1}(x)=x \ and \ fof^{-1}(x)=f(f^{-1}(x))=3f^{-1}(x)+6 \ so\\3f^{-1}(x)+6=x \ \ subtract \ 6\\3f^{-1}(x)=x-6 \ \ divide \ \ by \ \ 3\\ f^{-1}(x)=\dfrac{x-6}{3}

hope this helps

3 0
3 years ago
Solve the equation 2x + 4 - 9 Explain the steps<br> and properties you used.
Verizon [17]

Answer:

2x - 5

Step-by-step explanation:

2x + 4 - 9

the 2x gonna stay

so you take 4 - 9 = -5

so the answers gonna be 2x - 5

bc the 5 is negative so you gonna subtract

I hope you understand my english...

6 0
3 years ago
Please please help me
Semenov [28]
X=3 because you subtract the three on both sides to get x alone. So you get: 7x=21 then you divide seven by 21 and get x=3
5 0
3 years ago
75% of what number is 42?
Anna35 [415]
75            42
-----         -----
100           x

75 x= 4200
---       ------
75       75

x = 56



6 0
3 years ago
Read 2 more answers
Mario sells electronics at Big Box Electronics Store. He is paid a salary of $250 a week
Usimov [2.4K]

Answer:

Step-by-step explanation:

  1. E = 0.07s + 250
  2. 0.07
  3. Salary per week
  4. What he makes if he doesn't sell anything that week
  5. $4000
6 0
3 years ago
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