120 .
_________________________________
<span>Explanation:
_______________________________________________
15% of x = 18 ; x = total number of students.
_______________________________
Solve for: "x" ; which is our answer.
____________________________________
15 % of x = (15/100) * x = (0.15)x ;
_______________________________
(0.15) x = 18 ;
Divide each side by: "(0.15)" ; to isolate "x" on one side of the equation; and to solve for "x" , which is our answer:
_________________________________
</span>(0.15)x / (0.15) = 18 /(0.15) ;
_____________________________
x = 120 ; They are 120 students in Mrs. Madison's math classes.
___________________________________
The question asks to type the answer as a number. So:
______________________________
120 .
_____________________________
P(B) = Area of B/(Area of A + B + C + D)
Area B = 12 in^2
Area A = 35 in^2
Area C = 16 in^2
Area D = 3 x (4+5) = 27 in^2
Hence, P(B) = 12/(12+35+16+27) = 2/15
Answer:
B) y = 3x - 7
Step-by-step explanation:
y=mx+b
isolate y
y=3x-12+5
y=3x-7
Answer:
$32.55
Step-by-step explanation:
Before Tax Price: $30.00
Sale Tax: 8.50% or $2.55
After Tax Price: $32.55
Answer:
76
Step-by-step explanation:
140-56= 84
140-84=56
160-84=76
