Dante rode his bike a mile in 5 minutes. At that rate, how many miles can he ride in an hour?

Step-by-step explanation:

direct proportion

1mile in 5 minutes

xmiles in 60 minutes

cross multiply

60/5=12 miles

12 miles

Step-by-step explanation:

1×12=12 a clock has 60 minutes per hour 60÷5=12 12×1=12

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.

step-by-step explanation: