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ollegr [7]
2 years ago
12

If x 2 = x + 1, find x 3 , giving your answer in the form ax + b.

Mathematics
1 answer:
GalinKa [24]2 years ago
4 0

Answer:

{x}^{2}  = x + 1 \\ x =  {x}^{2}  - 1 \\  {x}^{3}  =  { ({x}^{2}  - 1)}^{3}  \\  = (x - 1) {}^{3} (x + 1) {}^{3}

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A business owner has just paid $6000 for a computer. It depreciates at a rate of 22% per year. How much will it be worth in 5 ye
katovenus [111]

Answer:

It will be worth $1732.30.

Step-by-step explanation:

After 1 year : 6000 x .78 = 4680

2 yr - 4680 x .78 = 3650.4

3 yr - 3650.4 x .78 = 2847.312

4 yr - 2847.312 x .78 = 2220.90336

5 yr - 2220.90336 x .78 = 1732.304621

1732.30

I think this is what it was asking

7 0
3 years ago
58,927 in scientific notation
mash [69]
5.8927 x 10^4
it easy it must be a number between 1-10 (this time 5.8927) and then the 10^4 its because the decimal point moves 4 spaces
4 0
3 years ago
Let f(x) = 6x^2 + 5 and g(x) = 3x - 5. Find f(g(7)).
Vedmedyk [2.9K]

Answer:

D) 1541

Step-by-step explanation:

I like to answer it w without deriving the formula of f(g(x)). So, we go this way, you firstly have to find g(7) which will be equal to 3 * 7 - 5 = 16.

And then you find f(16) = 6*16*16+5 = 1541. That's all.

8 0
2 years ago
If the original quantity is 15 and the new quantity is 19, estimate the percent change.
trapecia [35]

Answer:

25% increase

Step-by-step explanation:

5 0
2 years ago
Five less than twice what negative number squared is 157?
fenix001 [56]
Five less than twice what negative number squared is 157 <- put into an expression
-5 + 2(-x^2) = 157
Now simplify:
-5 + -2x^2 = 157
-2x^2 = 162
-2x^2 - 162 = 0
2x^2 + 162 = 0
x^2 + 81 = 0

3 0
3 years ago
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