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3 years ago

Which graph represents a function?

Mathematics

2 answers:

-BARSIC- [3]3 years ago

8 0

Answer:

the last one

Step-by-step explanation:

use the horizontal line test to find out if its a function

for more information Google horizontal line test

hope this helps :)

zzz [600]3 years ago

5 0

Answer:

The last option (The line going straight left to right)

Step-by-step explanation:

For a graph to represent a function, the line must pass the vertical line test.

I've attached an image to look at how the vertical line test works.

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A sound system originally priced at $480 is on sale for 20 percent off. The tax on the purchase after the discount id 7.5 percen

daser333 [38]

Answer:

$412.80

Step-by-step explanation:

480 x 0.20(20%)=96

480-96=384

384 x .075(7.5%)=28.8

384+28.80=412.80

7 0

3 years ago

The ratio of Ed's toy cars to Pete's toy cars was initially 5:2. After Ed gave 30 toy cars to Pete, they each had an equal numbe

Slav-nsk [51]

Answer:

140 toy cars

Step-by-step explanation:

The ratio of Ed's toy car to Pete's toy car is initially given as 5:2

Ed gave Pete a total number of 30 cars

Let x represent the greatest common factor that exists between both number

Number of Ed's car is represented as 5x

Number of Pete car is represented as 2x

Since they each have an equal number of cars which is 30 then we can solve for x as follows

5x-30=2x+30

Collect the like terms

5x-2x= 30+30

3x= 60

Divide both sides by the coefficient of x which is 3

3x/3=60/3

x=20

Ed's car is 5x, we substitute 20 for x

5(20)

= 100 cars

Pete car is 2x,we substitute 20 for x

2(20)

= 40 cars

Therefore, the total number of cars can be calculated as follows

= 100+40

= 140 toy cars

Hence they have 140 toy cars altogether

5 0

3 years ago

Read 2 more answers

Find the measure of each angle indicated.<br><br> Please show your work

wel

Answer:

Um can put a picture or something cause I can't give you answer without a picture

Step-by-step explanation:

6 0

3 years ago

7th grade work help I Will give brainlist

andrew-mc [135]

Answer:

I need help too someone

Step-by-step explanation:

please

4 0

3 years ago

If f(x) = 3x+2 and g(x) = x^2<br> what is g( f(x))

irakobra [83]

Answer:

$9x^{2}+12x+4$

Step-by-step explanation:

$g(f(x))=(3x+2)^{2}$

= $9x^{2}+12x+4$

6 0

4 years ago