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3 years ago

F(x)=3x+10x and g(x)=2x-4, find (f+g)(x)

Mathematics

2 answers:

djyliett [7]3 years ago

8 0

Answer:

15x - 4

Step-by-step explanation:

Add both of the equations together.

f(x) + g(x)

(3x + 10x) + (2x -4)

Then, combine like terms

3x + 2x + 10x = 15x

15x - 4

Alborosie3 years ago

4 0

Answer: A. 3x+8x+4

Step-by-step explanation: APEX

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Solve equation -2 • 4/5 = -3 1/2 • n

kogti [31]

16/155 = n

explanation

A linear equation is an equation of a straight line. To solve linear equations, it is important to keep the following key concepts in mind:

Maintain balance of the equation by applying the same operations to both sides of an equation

Isolate for the variable by collecting like terms

Use inverse operations to rearrange an equation

to show your work

-8/ 5 = -31/2 • n
- 8/5 = -31n/2
2(-8/5) = 2 • -31/n
-16/5 = -31n
-16/5 / -31 = -31n/31
16/155 = n

8 0

2 years ago

URGENT WILL GET 20 and Brainlest

My name is Ann [436]

The polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck is:

$f(x) = -0.04x^2 + 18x + 75$

Solution:

The cost of distributing by train can be modeled as:

$-0.07x^2 + 40x - 105$

The cost of distributing by truck can be modeled as:

$-0.03x^2 + 22x - 180$

where x is the number of tons of product distributed

To find: Difference between the cost of distributing by train and the cost of distributing by truck

Difference = cost of distributing by train - cost of distributing by truck

Let f(x) = difference in cost between trains & trucks

$f(x) = (-0.07x^2+40x-105) - (-0.03x^2 +22x - 180)$

$f(x) = -0.07x^2 + 40x -105 + 0.03x^2 -22x + 180$

$Combine\ the\ like\ terms\\\\f(x) = -0.07x^2 +0.03x^2 + 40x - 22x +180-105\\\\Add\ the\ like\ terms\\\\f(x) = -0.04x^2 + 18x + 75$

Thus polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck is found

8 0

3 years ago

What’s a mean,median,and mode?

tamaranim1 [39]

The mean is the average you're used to, where you add up all the numbers and then divide by the number of numbers. The median is the middle value in the list of numbers. Mode is the number which appears most often in a set of numbers.

Hope this helps you :)

5 0

3 years ago

Could someone answer question 5

Savatey [412]

P = 4s
P = (120)^1/2
4s = sqrt120
s = sqrt120/4

A = 2s
2*sqrt120/4 = sqrt120/2
Number 5 is the square root of 120 divided by 2

5 0

3 years ago

Read 2 more answers

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gavmur [86]

Answer: