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yuradex [85]
3 years ago
13

For f(x) = 4x + 1 and g(x) = x2 – 5, find (f - g)(x).

Mathematics
2 answers:
iris [78.8K]3 years ago
8 0

combine like term:

4x+1-x2-5= -x2 +4x-4

x2 have no like term to combined with.

same with 4x.

but +1 and -5 could so it equal to -4

1-5=-4

out it together would equal to -x2+4x-4

Natali [406]3 years ago
4 0

Answer:

I think it's going to be D

Step-by-step explanation:

4x+1=2x-5

-4x-1 -4x-1

-2x=-4

÷2

x=-2

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13. Jessica has taken 8 quizzes. The mean of her scores is 92. Her first 6 scores are shown.
Dovator [93]

Answer: Median= 91; 8th quiz score=86

Step-by-step explanation: The sum of the scores is 8×92=736. Subtract the 6 given scores and then a 100 for the seventh quiz to find the score she got on the 8th quiz, this is an 86. Now that you have all the scores, arrange them all in the least to greatest order and find the average of the middle two numbers (median), which is 91!

7 0
2 years ago
Find all solutions in the interval [0, 2π). tan x + sec x = 1
svp [43]
Use the identity 
sec^2x = 1 + tan^2 x
- so sec x = sqrt(1 + tan^2 x) then:-
tan x + sqrt( 1 + tan^2 x) = 1
sqrt ( 1 + tan^2 x) = 1 - tan x
1 + tan^2 x  = 1 + tan^2x - 2 tan x
0 = -2 tanx 

tan x = 0 

x =  0, π 
π is an extraneous root because sec 180 = -1 
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6 0
3 years ago
Write an equation in point-slope form of the line that passes through the point (9,0) and has a slope of m=-3 .
aksik [14]

Answer:

y =  - 3x + 27

Step-by-step explanation:

The standard form for the equation of the line is

y = mx + c

Recall that:

y = 0 \:  \:  \: x = 9 \:  \:  \: m =  - 3 \\ y = mx + c \\ 0 =  - 3(9) + c \\ 0 =  - 27+ c \\ 27 = c

Therefore the equation of the line is:

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5 0
2 years ago
Which is it? , 30 points
goldenfox [79]

Answer:

It's choice B.

Step-by-step explanation:

Let's look the one you have chosen (A):

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x-2 / 7 = f(x) - 8

x- 2 = 7(f(x) - 8)

x = 7(f(x) - 8) + 2

The inverse)= 7(x - 8) + 2

So it's not A.

B.  f(x) = 5(x/4) - 3

5x / 4 = f(x) + 3

5x = 4(f(x) + 3)

x = 4(f(x) + 3 / 5

So the inverse is  4(x + 3) / 5

So it is B.

5 0
3 years ago
Read 2 more answers
I don’t understand this question, what’s the answer?
Goryan [66]
Depending on how far it goes up and over up/run is the m and the y is were it touches the y axis
5 0
3 years ago
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