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Nonamiya [84]
3 years ago
5

If your right I’ll mark brainiest

Mathematics
1 answer:
lbvjy [14]3 years ago
8 0

Answer:

i dont know, ive never learned this haha. i sat here for at least 45-50 minutes trying to figure it out. sorry :/

Step-by-step explanation:

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If f(x)=x^2-1 and g(x)=-2x-3, what is the domain of (fog)(x)?
Iteru [2.4K]

Answer:

The domain of (fog)(x)  is  \begin{bmatrix}-8  , -1\end{bmatrix}

Step-by-step explanation:

Given function as :

f(x) = x² - 1      And

g(x) = - 2x - 3

So, Function (fog)(x) = ( -2x - 3 )² - 1

Or,  (fog)(x) = ( 4x²  + 12x + 9) - 1

Or,   (fog)(x) =  4x²  + 12x + 8

Or,   (fog)(x) =  4x²  + 4x + 8x + 8

Or,   (fog)(x) = 4x ( x + 1 ) + 8 ( x + 1 )

Or,   (fog)(x) =  ( 4x + 8 ) ( x + 1 )

∴    (fog)(x)  lies between  - 8 to - 1

Hence The domain of (fog)(x)  is  \begin{bmatrix}-8  , -1\end{bmatrix}    Answer

6 0
4 years ago
Read 2 more answers
What is an equation of the line that passes through the point ( − 5 , − 1 ) (−5,−1) and is parallel to the line 4 x − 5 y = 10 4
Ilia_Sergeevich [38]

Answer:

Step-by-step explanation:

The equation of a straight line is expressed in the slope intercept form as

y = mx + c

Where m represents the slope

c represents the intercept.

The given equation is

4x−5y = 10

5y = 4x - 10

y = 4x/5 - 2

Comparing with the slope intercept form,

The slope,m = 4/5

The line that is parallel to the given line passes through the point (- 5,- 1)

If two lines are parallel, it means that they have the same slope. Therefore, the slope of the line that is parallel to the given line is 4/5

To determine the intercept c, we will substitute m = 4/5, x = - 1 and x = - 5 into the slope intercept equation. It becomes

- 5 = 4/5 × - 1 + c

- 5 = - 4/5 + c

c = - 5 + 4/5 = (- 25 + 4)/5 = - 21/5

The equation becomes

y = 4x/5 - 21/5

3 0
3 years ago
Irregular polygons has sides that are not equal lenght and angles that are not equal?
olganol [36]

Answer:

yeah it's true

Step-by-step explanation:

  1. regular polygon have all equal side and all equal angle
  2. IRREGULAR polygon have atleast one unequal side and one unequal angle

............THANKS.........

8 0
3 years ago
a checking account earns 2.5% simple interest.how much would be earned by an account with $3,400 in after 3 years
sveta [45]

Answer:

Step-by-step explanation:

$3,400*2.5%*3=$255

7 0
3 years ago
A rectangular piece of land measures 20 feet by 15 feet. James created a cement sidewalk, x feet wide, to border a rectangular g
Irina-Kira [14]

Answer:

The second and fourth answer are correct

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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