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lesya [120]
3 years ago
8

If f(x) = -x^2+4x-9 and g(x) = x - 8 find g(f(-1)).​

Mathematics
1 answer:
satela [25.4K]3 years ago
5 0

Answer: g(f(-1))=-22

Step-by-step explanation:

To find g(f(-1)), you want to first want to solve f(-1). Once you solved that, you plig the answer you get into g(x). Then, you will have your final answer.

f(-1)=-(-1)²+4(-1)-9                  [exponent]

f(-1)=-1+4(-1)-9                       [multiply]

f(-1)=-1-4-9                             [subtract from left to right]

f(-1)=-14

We have found that f(-1)=-14. Now, we know in -14 into g(x) and solve.

g(-14)=(-14)-8                         [subtract]

g(-14)=-22

Now, we know that g(f(-1))=-22.

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Use the special angles to evaluate: a) cosec 60° cot 30° + cos 45º cosec 45° 2​
lbvjy [14]

Answer:

the required answer is 4√2+1/2√2

7 0
3 years ago
Using rounding to estimate the solution to the problem. 538-714 Be sure to give the estimated solution, not the exact solution.
amid [387]

Answer:

1. -370

2. 70

3. 10.75

4. 6700

5. 37.26

Step-by-step explanation:

1. Estimating the solution means round the numbers to the nearest ten, then subtract the rounded numbers.

2. Same thing as #1

3. Using long division, it should be quite easy. If you need more evaluation, comment and I'll answer.

4. To the nearest hundred, you write the closest exact hundred. example: 8334 would be rounded to 8300.

5. To the nearest hundredth, you write the closest exact hundredth. example: 65.734 would be rounded to 65.73

Hope this helped, good luck!

5 0
3 years ago
How does a residential survey help buyers?
Gnoma [55]
<span>C) buyers are aware of the accurate measurements of the property. A residential survey is also known as a boundary survey and is used to determine the boundaries of a piece of property. It is generally required as part of the process of building new construction on a property to insure that the construction doesn't cross the property line and intrude on someone else's property. With this in mind, only option "C" reflects what a residential survey is.</span>
3 0
3 years ago
Read 2 more answers
Slope of 4/5, a width of 30…what is the height..?
maw [93]

\qquad\qquad\huge\underline{{\sf Answer}}

Here we go ~

Slope of the graph can be expressed as :

\qquad \sf  \dashrightarrow \:slope =   \tan( \theta)  =  \dfrac{4}{5}

\qquad \sf  \dashrightarrow \:   \dfrac{x}{30}  =  \dfrac{4}{5}

\qquad \sf  \dashrightarrow \: x =  \dfrac{4}{5}  \times 30

\qquad \sf  \dashrightarrow \: x =  {4}{}  \times 6

\qquad \sf  \dashrightarrow \: x = 24 \: units

So, the value of x is 24 units

8 0
2 years ago
20 is what percent of 52
Maslowich
The process here is finding out the smallest number's % towards the largest number.

Divide 20 by 52:
20/52 = 0.38 (estimated) | This is the % in decimal form, which is 38%.

Conclusion: 20 is 38% of 52.

{---Further Elaboration for Future Reference---}

Finding the Smallest Number:

What number is 25% of 60?

Multiply 60 by the decimal form of 25%.
60 * 0.25 = 15 | 15 is 25% of 60.

Finding the Percentage. (Like what we already did.)

30 is what percent of 150?

Divide 30 by 150.
30/150 = 0.2 | 30 is 20% of 150.

Finding the Largest Number.

12 is 30% of what number?

Divide 12 by the decimal form of 30%.
12/0.3 = 40 | 12 is 30% of 40.

I hope this helps, have a great rest of your day! ^ ^
| | Ghostgate | |
5 0
3 years ago
Read 2 more answers
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