Step-by-step explanation:
Let a be the total score of Div. A
Let b be the total score of Div. B
given,
as equation 1.
and
as equation 2.
Now multiply equation 2 by 1/20 to eliminate b to solve for a.
take this new equation as equation 3.
now we will use equation 1 + equation 3 to eliminate b to solve for a.
Div.A total score = 600
Average Score = Total Score / Number of students.
SA = 2(wl + hl + hw)
SA = 208
h = 8
l = 6
208 = 2(6w + (8*6) + 8w)
208 = 2(14w + 48)
208 = 28w + 96
208 - 96 = 28w
112 = 28w
112/28 = w
4 = w <==== the width is 4 cm
Answer:
is there supposed to be a pic attached I need more info
x-3y= -3x +3y=9
collect like terms
-3x will go to x and it will turn to
x+3x And -3y will go to +3y and it will turn to
×+3x=+3y+3y=9
solving time.
x+3x is 4x
3y +3y =6y
4x+6y =9
remove the 4x for now.
6y divided by 9.
3 in 6 is 2 and 3 in 9 is 3.
therefore 4x =2=9
4/2=2
2x=9.
4and half is the answer
