Answer:

Step-by-step explanation:
Look at the picture.

Answer: 54
Step-by-step explanation: 30, percentage increased by 80% (percent) of its value = 54

Here we go ~

[ add 2 on both sides ]

[ form identity : a² + b² + 2ab ]

[ a² + b² + 2ab = (a + b)² ]



so, the value of required expression is 6
[usually positive value is considered, but if asked the value can be either positive or negative]
Answer:
c^2=a^2+b^2
c^2=6^2+8^2
c^2=36+64
c=10
but still do not understand why peoples are asking that basic
Answer:
Your answer is D. 5 children, 12 teens, and 3 adults.
Step-by-step explanation:
45 children, 108 teens, and 27 adults.
x - children , y-teens, z-adults
45x + 108y + 27z
GCF for 45, 108, 27 is 9 so factory out 9 to all.

5 children, 12 teens, and 3 adults.