Nick has an album that holds 600 hockey cards. Each page of the album holds 6 hockey cards. If 80% of the album is empty, how many pages are filled with hockey cards?

The answer is 120 pages are filled with hockey cards

Step-by-step explanation:

So, first find out what the remaining percentage is, in this case it is 20%

Then use a calculator (or if your that smart and can do it in your head which i applaud) fine 20% of 600, which is 120. So that's how many pages there are left. Just to double check find out what 80% of 600 is which is 480. Then you should add those together to see if you get the total amount of cards. Which, 120+480 does equal 600.

I hope this helps <3

4

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it