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ziro4ka [17]
2 years ago
14

Solve y=f(x) for x then find the input when the output is 6 f(x)=x+9

Mathematics
1 answer:
r-ruslan [8.4K]2 years ago
4 0

x = -3

So to figure this out we can readjust the equation to make it easier to solve

f(x) = x + 9 is equal to x+9 = 6

From here we can just subtract 9 from both sides and we get our answer!

x+(9-9) = (6-9)\\x = -3

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F(x) = 2(x + 6), find x if f(x) = 22
Ksivusya [100]
   F(x) = 2(x + 6)      Plug in 22 for x
F(22) = 2(22 + 6)    Use the Distributive Property
F(22) = 44 + 12       Add
F(22) = 56
7 0
2 years ago
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An ac unit uses 3500 watts or power. If it runs for 10 hours each day and the utility company charges $0.13 per kWh, how much do
Helga [31]

Cost = (3500 W)·(1 kw/1000 W)·(10 hrs/day)·(30 day/month)·($0.13/kw-hr)

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5 0
3 years ago
If f(x) = (1/8)(8^x), what is f(3)?
faust18 [17]

Answer:

f(3)=64

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Given the functions f(x) = 2x + 5 and g(x) = x2 + 8, which of the following functions represents f(g(x)] correctly?
lakkis [162]

Answer:

Choice 4.

Step-by-step explanation:

f(g(x))

Replace g(x) with x^2+8 since g(x)=x^2+8.

f(g(x))

f(x^2+8)

Replace old input,x, in f with new input, (x^2+8).

f(g(x))

f(x^2+8)

2(x^2+8)+5

Distribute:

f(g(x))

f(x^2+8)

2(x^2+8)+5

2x^2+16+5

Combine like terms:

f(g(x))

f(x^2+8)

2(x^2+8)+5

2x^2+16+5

2x^2+21

7 0
3 years ago
Can anyone help with 19-22 with work shown I’m really confused
yanalaym [24]

Answer:

19.  C

20.  D

21.  B

22.  A

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If an angle is subtended from an arc and it goes to the opposite end of the circle, the angle is HALF of the measure of the arc. If it goes to the center, it is SAME measure as arc.

19.

Arc BC is DOUBLE of Angle BAC, so

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20.

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Answer is A

8 0
3 years ago
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