What is the radius and diameter of the following circle? 5.1 cm
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If 24 students went on a field trip, and 24 students represented eight tenths of the class, then 
.
First, multiply by 10 on both sides.
240 = 8x
Divide by 8 on both sides.
x = 30.
The class has 30 students in all.
This is, however, only the equation way to solve.
First, multiply by 10 on both sides.
240 = 8x
Divide by 8 on both sides.
x = 30.
The class has 30 students in all.
This is, however, only the equation way to solve.
The formula is 
We have:
Substituting these values into the formula, we have
⇒ divide each term by 16
⇒ find the pair of numbers that multiply to give 4 and sum gives -5 which is -1 and -4
⇒ We have two values of t
⇒ 
⇒ 
The time when the projectile reached 64 feet is at t=1 and t=4
We have:
Substituting these values into the formula, we have
The time when the projectile reached 64 feet is at t=1 and t=4