Answer:
add (12/2)^2 to both sides
Step-by-step explanation:
x^2-12x=16
x^2 -12x + (12/2)^2 = 16 + (12/2)^
x- (12/2)^2=52
(x-6)^2=52
Answers:
x= -2 root 3 +6
x= 2 root 3 +6
Answer: 320 g
Step-by-step explanation:
We can set up a ratio.
Let the amount of oats equal to x.
18/240 = 24/x
We can now cross multiply.
18x = 5760.
x = 320 g
Answer:
4 1/6 ft
Step-by-step explanation:
Since each of the 18 students gets an equal length of ribbon, we need to divide the 75 ft of ribbon into 18 equal parts.
75/18= 4 1/6
Each student gets 4 1/6 ft of ribbon
Answer:
The original prince is: $775
Step-by-step explanation:
As we know that
- 100% - 20% = 80% = 80/100 = 0.8
The price after 20% discount = Discounted price = $620
We have to find the original price before the discount.
using the formula
(Discounted price) = (100 percent - discount percent) x (original price)
$620 = (100% - 20%) x (original price)
$620 = (80%) x (original price)
$620 = (80/100) x (original price)
$620 = (0.8) x (original price)
so
original price = $620/0.8
= $775
Therefore, the original prince is: $775