All categories

3 years ago

Find the x-intercept of the line 3x - 9y = 15.

Mathematics

1 answer:

erastovalidia [21]3 years ago

4 0

Answer:

The x-intercept is 5.

Some people prefer you right it as a point (5,0).

Step-by-step explanation:

The x-intercept can be found by setting y=0 and solving for x.

Just like to find the y-intercept you can set x=0 and solve for y.

Let's find the x-intercept.

So we will set y=0 and solve for x:

3x-9y=15

3x-9(0)=15

3x-0 =15

3x =15

Divide both sides by 3:

x =15/3

x =5

So the x-intercept is (5,0).

You might be interested in

A $30,000 car depreciates in value 12% a year. How much will the car he worth in 5 years?

Oksanka [162]

Answer:

15,831.957504

Step-by-step explanation:

30,000*.88=26400

26400*.88=23232

23232*.88= 20,444.16

20,444.16*.88= 17,990.8608

17,990.8608*.88= 15,831.957504

6 0

2 years ago

Read 2 more answers

Jack wants to find the height of an olive tree for a science project. Jack is 2 meters tall. He stands 6 meters away from the tr

artcher [175]

Answer:

D 4/10 = 2/x

Step-by-step explanation:

2/x represents the ratio of the man's height to the tree's height. The appropriate proportion will be one that ratios the man's shadow (4 m) to the tree's shadow (6+4=10 m).

The correct proportion is ...

4/10 = 2/x

3 0

3 years ago

Solve the following equations<br> 7(3x + 5) - x = 75

kirill115 [55]

Answer:

x = 2

Step-by-step explanation:

7(3x + 5) - x = 75

1. Distributive property

multiply 7 by whatever is in the parenthesis

7*3x + 7*5 - x = 75

21x + 35 - x = 75

2. Combine like terms

21x - x = 20x

20x + 35 = 75

3. Subtract 35 on both sides

20x + 35 - 35 = 75 - 35

20x = 40

4. Divide both sides by 20 since u want to isolate the variable

20x/20 = 40/20

x = 2

And thats ur answer

Hope this helped!

6 0

2 years ago

This table shows the area in inches of four rectangular scraps of fabric.

Fittoniya [83]

Answer: 82

Step-by-step explanation:

(80+ 84) / 2

164/2

8 0

2 years ago

the town libary is raising money by selling old books for 4$ each write an equation that can be used to find the amount of money

Drupady [299]

Answer:

6550

Step-by-step explanation:

You can put this solution on YOUR website!

Call the number of hardcover and paperback books, h and p.

Thus

h + p = 8 and the value equation is

4h + 2p = 26

Now multiply the top one by four and subtract from the second one...we get

4h + 2p = 26

-(4h + 4p = 32)

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

-2p = -6

p = 3 so that

h = 5 x + y = 8, (1)

4x + 2y = 26, (2)

where x and y are the numbers of hardcover and softcover books respectively.

To solve, multiply the equation (1) by 2 (both sides) and then distract it from the equation (2). You will get

4x - 2x = 26 - 16, or

2x = 10, or x = 5 - the number of hardcover books purchased.

Then from the equation (1) you get y = 3.

Check. 4*x + 2*3 = 4*5 + 2*3 = 26. OK.

3 0

2 years ago