2 years ago

For f(x) = 3x + 1 and g(x) = x2 - 6, find (f + g)(x).

Mathematics

1 answer:

alexdok [17]2 years ago

8 0

(3x + 1) + (x2 - 6)
x2 + 3x - 5

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Answer:

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Step-by-step explanation:

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2 years ago

Double a number decreased by 25.6 is equal to 90 Find the number

marin [14]

Answer:

Step-by-step explanation:

2x-25,6=90

2x=90+25,6

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3 years ago

Read 2 more answers

Susan drove to visit a friend. She drove 345

padilas [110]

Answer:

$Average\ Speed = 60 mi/hr$

Step-by-step explanation:

Given

$Distance = 345\ miles$

$Time = 5\ hours\ 45\ minutes$

Required

Determine the average speed

This is calculated as thus:

$Average\ Speed = \frac{Distance}{Time}$

Convert time to hour:

$Time = 5\ hours\ 45\ minutes$

$Time = 5\ hours + \frac{45}{60}\ hour$

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$Time = \frac{20 + 3}{4}\ hours$

$Time = \frac{23}{4}\ hours$

$Time = 5.75\ hours$

$Average\ Speed = \frac{Distance}{Time}$

$Average\ Speed = \frac{345}{5.75}$

$Average\ Speed = 60 mi/hr$

7 0

2 years ago

A recipe requires 1/2 of a cup of white sugar and 2/3 of a cup of brown sugar. How much sugar is needed in all for the recipe?

djverab [1.8K]

Answer:

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2 years ago

7. Expand and reduce A(x). Then calculate A(x) for x=1.<br> A (x) = (3x – 3)(3x + 2)

SashulF [63]

Given:

The function is

$A(x)=(3x-3)(3x+2)$

To find:

The simplified form of A(x) and value of A(x) at x=1.

Solution:

We have,

$A(x)=(3x-3)(3x+2)$

$A(x)=(3x)(3x)+(3x)(2)+(-3)(3x)+(-3)(2)$

$A(x)=9x^2+6x-9x-6$

$A(x)=9x^2-3x-6$

Putting x=1, we get

$A(1)=9(1)^2-3(1)-6$

$A(1)=9-3-6$

$A(1)=9-9$

$A(1)=0$

Therefore, the simplified form of A(x) is $A(x)=9x^2-3x-6$ and the value of A(x) at x=1 in 0.

4 0

3 years ago