Let us say that:
x = age of brad
x + 2 = age of Alexandra
(x + 2) – 3 = age of Cecilia = x – 1
We are also given that:
x + x + 2 + x – 1 = 37
<span>
solving for x:</span>
3x + 1 = 37
3x = 36
x = 12 = age of brad
x + 2 = 14 = age of Alexandra
<span>x – 1 = 11 = age of cecilia</span>
Lets use a rule of three simple with direct proportion to solve:
20 boxes -----> 15 min
100 boxes ----> x
x = (100)(15)/20
x = 75
therefore it takes 75 mins to stack 100 boxes
If we use fractions to solve:
15/20 = x/100
and solve for x.
20/15 = 100/y
solve for y
-2/3 is the slope of a line that is perpendicular to the slope 3/2
Answer:
30°
Step-by-step explanation:
Sin= 10/20
Sin= 0.5
Use your calculator then and type in 0.5 and hit the sin(-1) button and you get your answer.
Answer:
x = 
Step-by-step explanation:
Express the ratio in equivalent fraction form, that is
= 
( cross- multiply )
6x = 50 ( divide both sides by 6 )
x = 
=
