3 years ago

Please help me!!!!!!!!!!!!!!!

Mathematics

1 answer:

ycow [4]3 years ago

7 0

Answer:

7) (f+g)(x) = 4^x +5x -5

8) (f-g)(x) = 4^x +x +5

Step-by-step explanation:

7) add the two expressions.

(f+g)(x) = f(x) +g(x) = (4^x +3x) +(2x -5)

(f+g)(x) = 4^x +5x -5

8) subtract g(x) from f(x).

(f-g)(x) = f(x) -g(x) = (4^x +3x) -(2x -5) = 4^x +3x -2x +5

(f-g)(x) = 4^x +x +5

You might be interested in

A wall that is 12 feet high on the building is 36 centimeters high on the model. Find the height on the model of a door that is

cluponka [151]

Answer:

9cm

Step-by-step explanation:

3/12 is equal to 1/4 ratio between the size of the window and the building.

Apply that ratio to the the 36 centimeters to get 36/4 which is equal to 9 centimeters.

8 0

3 years ago

Read 2 more answers

On a certain hot summers day, 648 people use the public swimming pool. The daily prices are $1.50 for children and $2.25 for adu

ehidna [41]

Answer:

252 children and 395 adults

Step-by-step explanation:

Make a linear system of equations, where x represents the number of children and y represents the number of adults

x+y=648

1.50x+2.25y=1269

solve using substitution, so y=648-x,

then substitute this into the second equation, so you get 1.50x+2.25(648-x)=1269,

solve for x and you will get x equals the 252

then substitute this into the first equation, so you get 252+y=648

solve and you will get y=395

3 0

2 years ago

The value of a new car in 2015 was 40,000 dollar. It depreciates each year by 7%. How much will the car be worth in 2026?

tiny-mole [99]

Answer:

9200 dollars

Step-by-step explanation:

just minus it 77%

4 0

2 years ago

A) (3,2),(2,1) B) (3,-2),(-2,1) C) (-3,2),(-2,-1) D) (-3,-2),(2,-1)

bija089 [108]

Answer:

Step-by-step explanation:

4 0

3 years ago

PLEASEEEEEE HELPPPPPPPPPP MEEEEEEEEEEEEEEEE

polet [3.4K]

Answer:

120.2 or in other words, the answer is the last option, D

3 0

2 years ago