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NNADVOKAT [17]
3 years ago
7

99 POINTS.... PLEASEEEEE HELP !!!

Mathematics
1 answer:
Nookie1986 [14]3 years ago
5 0
You have a lot of questions here, I can help with some.

1) To find the inverse, switch the x and f(x) and solve for f(x).
x = 3f(x) - 7
x + 7 = 3(f(x)
(x + 7) / 3 = f(x)

2) It is a function, because each input pairs with only 1 output.

3) Any diagonal line would be a function.

4 - 8 (We can't do without the diagram)

9) f(-9) = 3(-9) - 6
    f(-9) = -27 - 6 
    f(-9) = -33

10) f(-2) = 42 + 3
      f(-2) = 45 
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Need help! please reply with right answers please.
Lerok [7]

Answer:

37

Step-by-step explanation:

if lucy was half lisa's age at 6, that means she was 3. so there's a 3 year difference between the two sisters, so now if Lisa is 40, that makes Lucy 37.

7 0
3 years ago
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7. For homework Javier has to solve the equation below.
cricket20 [7]

Answer:

C 10⁴

Step-by-step explanation:

The given equation is

7.75n = 77500

Javier has to solve for n

He can multiply through by 100 to get;

775n = 7750000

He can now divide through by 775 to obtain:

n =  \frac{7750000}{775}

He can now easily simplify to get:

n = 10000

We rewrite as a power to get:

n =  {10}^{4}

7 0
3 years ago
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KonstantinChe [14]
204878 that the answer
5 0
3 years ago
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Write an equation that could represent the function table​
ExtremeBDS [4]

Answer:

y = x^{2}

Step-by-step explanation:

Squaring a number means multiplying the number by itself. 0*0=0. 1*1=1. 2*2=4, and 3*3=9. This is the pattern shown in the table.

8 0
2 years ago
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One-Half the difference of a number and 15
slega [8]

Answer:

x - 15 ÷ 2

Step-by-step explanation:

Since it wants you to find the half of your answer after you find the difference, be sure to leave the two at the end of your equation. With that said, let's move into finding out what "the difference of a number and fifteen is". Whenever they tell you 'a number', it means they want you to put a variable, such as x, since you do not know the number and it could be any number. Now, the "difference" of something usually means...you guessed it, subtraction! Now that you've decoded your equation, you now know it means that x - 15 is the first part, and you can now put the one half right after it.

If this is confusing, I can explain further. :D

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3 years ago
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