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saveliy_v [14]
2 years ago
6

If f(x)=2x+4 and g(x)=x-5, find (f-g)(x)

Mathematics
1 answer:
wariber [46]2 years ago
5 0

Answer:

[

f

o

g

]

(

x

)

=

2

x

2

−

1

Explanation:

f

(

x

)

=

2

x

+

5

,

g

(

x

)

=

x

2

−

3

then,

[

f

o

g

]

(

x

)

=

2

(

g

(

x

)

)

+

5

=

2

(

x

2

−

3

)

+

5

[

f

o

g

]

(

x

)

=

2

x

2

−

6

+

5

[

f

o

g

]

(

x

)

=

2

x

2

−

1

Step-by-step explanation:

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Since there were 9 feet of ribbon and Jim uses 1/3 we are going to do 9/1 * 1/3 and get 3 Jim makes 3 ribbons.
6 0
3 years ago
Every five years in August, the population of a certain city is recorded. In 2010, the city had a population
Ipatiy [6.2K]

Answer:

10,000

Step-by-step explanation:

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3 0
2 years ago
Four times a number is equal to the number increased by 15. Enter the equation that represents Karla's sentence into the box. Us
Montano1993 [528]

Answer:

The equation that represents Karla's sentence is 4y = y + 15

Step-by-step explanation:

From the question,

Four times a number is equal to the number increased by 15. To write the equation that represents the sentence, we will have to use a variable to represent the unknown number.

Since we are asked to use y for the variable, that is, let the number be y

Then

The statement, "four times a number" will be

4×y = 4y

and this is equal to the number increased by 15,

The number increased by 15 means y + 15.

Hence, the equation becomes

4y = y + 15

This is the equation that represent Karla's sentence.

If desired,

The unknown number can be determined by solving for y in the equation

4y = y + 15

First, Collect like terms

4y - y = 15

3y = 15

Then, Divide both sides by 3

3y/3 = 15/3

y = 5

Hence, the variable (unknown number) is 5.

5 0
2 years ago
Someone please help lols
zepelin [54]

Answer:

need better explanation for this

6 0
3 years ago
A tennis ball weighs about 57.6 grams. about how many apuntes would 12 tennis balls weigh?
Ilia_Sergeevich [38]

Answer:

The weight of 12 tennis balls  =  691. 2 grams

Step-by-step explanation:

The weight of each  tennis ball =  57.6 grams

So, the weight of 12 balls    =    12 x ( weight of 1 ball)

                                              = 12 x 57.6 grams

                                              = 691.2 grams

⇒12 balls weigh 691.2 grams

Hence, the weight of 12 tennis balls  =  691. 2 grams

7 0
3 years ago
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