Answer:
x+24 = -20
this is the equation form
Hi!
-32 = 4b
4b = -32
b = -32 : 4
<u>b </u><u>=</u><u> </u><u>-</u><u>8</u>
Since this is a proportion, we cross multiply.
12/2=9/x (The variable "x" is used the represent the unknown number, and this is the number we are solving for)
12*x=2*9 (Cross multiply)
12x=18 (Simplify)
x=18/12 (Divide each side by 12)
x = 3/2 (Simplify fraction)
The unknown number is 3/2, or 1.5.
Well, it says that 34 kids like physics and since there is 100 students, we know 34% of the kids like physics. This means 66% like biology.
The answer is 110 because 11 times 10 is 110