Gerry has 50 sports trading cards. Of those cards one fifth of them are baseball cards, one teenth of them are football cards, and the rest are basketball cards. How many more basketball cards than baseball cards does gerry have?

Gerry has 25 more basketball cards than baseball cards.

Step-by-step explanation:

The total number of sports trading cards that Gerry has is 50.

Of those cards one fifth of them are baseball cards. It means that the number of baseball cards that he has is

1/5 × 50 = 10

one tenth of them are football cards. It means that the number of football cards that he has is

1/10 × 50 = 5

The rest are basketball cards. It means that the number of basketball cards that he has is

50 - (10 + 5) = 35 basketball cards

The difference between the number of basketball and baseball cards that he has is

35 - 10 = 25

expression #3 is not equivalent. the others are.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.