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4 years ago

What is the answer to the question 4n-n

Mathematics

1 answer:

AveGali [126]4 years ago

7 0

Answer:

Step-by-step explanation:

4n - 1n = 3n

N=1

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6x+5y=20 solve for y in terms of x

e-lub [12.9K]

Answer:

y = -6/5x +4

Step-by-step explanation:

6x+5y=20

Subtract 6x from each side

6x -6x+5y=20 -6x

5y = 20 -6x

Divide each side by 5

5y/5 = 20/5 -6x/5

y = 4 - 6/5x

We usually write the variable first

y = -6/5x +4

8 0

4 years ago

At a sale on winter clothing, Cody bought four pairs of gloves and four hats for $36.00. Tori bought three pairs of gloves and f

iren [92.7K]

Answer:

gloves cost $5

hats cost $4

Step-by-step explanation:

four pairs of gloves and four hats for $36.00

4g + 4h = 36

three pairs of gloves and four hats for $31.00

3g + 4h = 31

-------------------------

Subtract the second equation from the first

4g + 4h = 36

-( 3g + 4h = 31 )

––––––––––––

g = 5

gloves cost $5

substitute for g = 5 into either equation

4(5) + 4h = 36

20 + 4h = 36

Subtract 20 from both sides

4h = 16

Divide both sides by 4

h = 4

hats cost $4

4 0

3 years ago

Mari has a part time job. She earns $6 an hour. She makes at most $207.00 a week. What is the greatest number of hours that she

sergejj [24]

Answer:

If Mary earns 7$ an hour, we need to multiplicate 7$ by the number of hours worked for the entire week so we can get the salary per week.

Step-by-step explanation:

it's correct

8 0

3 years ago

If f(x) = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B9%7D" id="TexFormula1" title="\frac{1}{9}" alt="\frac{1}{9}" align=

boyakko [2]

Answer:

Solution given:

f(x) = $\frac{1}{9}$ x-2

let f(x)=y

y = $\frac{1}{9}$ x-2

interchanging role of x and y

x= $\frac{1}{9}$ y-2

x+2= $\frac{1}{9}$ y

y=9(x+2)

y=9x+18

F-¹(x)=9x+18

and

F-¹(-1)=9*-1+18=-9+18=9

6 0

3 years ago

Each time Kristine gets paid, she spends $20 and saves the rest. If the amount Kristine earns is represented by x and the amount

faust18 [17]

We are given that Kristine spends $20 and saves the rest each time she get paid.

We can use slope-intercept form y=mx+b to represent the equation.

Where x represents the amount Kristine earns and y represents the amount she saves.

Kristine spends $20. Therefore b= -20.

Plugging mx as just x and b=-20.

<h3>y = x-20.</h3><h3>If we plug y=0, we get </h3><h3>0 = x-20</h3><h3>x=20.</h3><h3>We can see in 4th option we have x-intercept =20.</h3><h3>Therefore, correct option is 4th option. </h3><h3 />

4 0

3 years ago

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