Answer:

Step-by-step explanation:
The area of a triangle is given by
.
Substituting given values, we have:

There are 2 groups because they are seperated into boys and girls.
Answer:
x = 30
Step-by-step explanation:
x/2 = 12 + 3
x = 2(12+3)
x = 30
Answer:

Step-by-step explanation:
<u>Given that:</u>
(4,y) = (x,7) [Both are equal]
<u>Comparing both sides of the equation:</u>
we will get,
4 = x
or
x = 4
and,
y = 7
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
| -24x + 120| > 48
-24x + 120 > 48
-24x > 48 - 120
-24x > - 72
x < -72/-24
x < 3
-24x + 120 < -48
-24x < -48 - 120
-24x < - 168
x > -168/-24
x > 7
solution is : x < 3 or x > 7...answer B