Answer:
Alina had at the beginning 
cookies
Step-by-step explanation:
we know that
c-----> represent 30% of all the cookies Alina had
Let
x-----> the 100% of all the cookies Alina had
by proportion
Answer:16cm^3
Step-by-step explanation:
height=3
Length of base edge=4cm
Area of base= length x length
Area of base=4x4=16
Volume =1/3 x base area x height
Volume=1/3 x 16 x 3
Volume =(1x16x3) ➗ 3
volume=48 ➗ 3
Volume=16
Volume =16cm^3
Answer:
c).3
Step-by-step explanation:
let the number be x
5x-3=x+9
collect like terms
5x-x=9+3
4x= 12
divide both sides by 4
x=3
the number is 3
Answer:
18,436
Step-by-step explanation:
The simplest form for 75/100 is 3/4
