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Vesnalui [34]
3 years ago
10

Which of the following represents f(-3)? A: 7 B: 5 C: 1 D: -1 ​

Mathematics
2 answers:
Fed [463]3 years ago
7 0

Answer:

f(-3)=-1

Step-by-step explanation:

-3 is less than 0, so you are going to use f(x)=x+2.

Plug in values:

f(-3)=-3+2\\f(-3)=-1

MatroZZZ [7]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Because x < 0 for x + 3

= -1

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I need help with this question
zvonat [6]

Answer:

Option B is correct

Step-by-step explanation:

Given:

f(x) = -20x^2 +14x +12 and

g(x) = 5x - 6

We need to find f/g and state its domain.

f/g = -20x^2 +14x +12/5x - 6

Taking -2 common from numerator:

f/g = -2(10x^2 - 7x - 6) / 5x -6

Factorize 10x^2 - 7x - 6= 10x^2 - 12x +5x -6

Putting in the above equation

f/g = -2(10x^2 - 12x +5x -6)/ 5x -6

f/g = -2(2x(5x-6) + 1 (5x-6)) / 5x-6

f/g = -2 ( (2x+1)(5x-6))/5x-6

cancelling 5x-6 from numerator and denominator

f/g = -2(2x+1)

f/g = -4x -2

The domain of the function is set of all values for which the function is defined and real.

So, our function g(x) = 5x -6 and domain will be all real numbers except x = 6/5 as denominator will be zero if x=5/6 and the function will be undefined.

So, Option B is correct.

8 0
3 years ago
Read 2 more answers
find the total thickness of two pieces of wood that a carpenter glued together IF one piece is 6/16 inches thick and the other p
Alexus [3.1K]

Answer:

It is simple add 6/16 + 7/8 = 20 /16 simplified will be 5/4 then in improper fraction will be 1 1/4 inches thick is the final answer.

Step-by-step explanation:

3 0
3 years ago
The equation having null set as its solution set is
KIM [24]

Answer:

  B) x = e^x

Step-by-step explanation:

The graphs of y = e^x and y = x never intersect, so the solution set will be the empty (null) set for ...

  x = e^x

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There is one intersection of y=x with cos(x) and with sin(x). There are an infinite number of solutions for x = tan(x).

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3 years ago
Percents-Starting with A, what is the order of letters for the scavenger hunt. Remember, you should be using all letters and whe
ad-work [718]

Answer:

yes

Step-by-step explanation:

yes

4 0
3 years ago
A rectangle has a perimeter of 102 ft and a length of 40 ft. Find the width of the rectangle.
vagabundo [1.1K]
The width is11ft
hope that helps
5 0
3 years ago
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