Reciprocals is the answer.
You can rewrite this problem into an equation. You know that the ratio of boys to girls is 4 to 3, which is the same as:
Cross multiply to get to 4G = 3B
Divide both sides by 4, to isolate the G (# of girls).
G = 3B / 4 = 0.75B
So you know that B + G = 35 (boys plus girls equals 35). Replace the G in this equation with the one you found above so that the entire equation only has one variable.
B + G = 35
B + 0.75B = 35
1.75B = 35
1.75B / 1.75 = 35 / 1.75
B = 20
However, you need to find G. So plug B back into one of the equations:
B + G = 35
20 + G = 35
G = 15
2.5 belongs woth numbers under 10 and decimals
Answer:
X=6,x=2
Step-by-step explanation:
X2-8x+12
So we will have to factorise
So let's solve
X2-8x+12
X2-6x-2x+12
X(x-6)-2(x-6)
(X-2)(x-6)
X-2=0
X=2
X-6=0
X=6
X=6 or x=2