Answer:
boys = 150
girls = 350
Step-by-step explanation:
I'm not sure what a tape diagram is, but I can get the answer.
Let b = boys
Let g = girls
3/7 = b/g
3/7 = b/(b + 200)
3(b + 200) = 7b
3b + 600 = 7b
600 = 4b
b = 600/4
b = 150
g= 150 + 200
g = 350
<< Add

to the left and right of the equation, multiple and make ''opposite multiplation'' to find x.
A)


25x.(-32)= (-16).5
-800x= -80
**to leave x alone and positive, you must divide to -800.


= INCORRECT
B)





C)



10x=1

D)


40x= 4
x=

= 1/10
I think there is a problem with the options :D
Answer:
24
Step-by-step explanation:
Answer:
2:3:5 is already in simplest form
Step-by-step explanation:
Answer:
x = 15.857143 (round this if you want)
Step-by-step explanation:
Total perimeter = 96
Values given = x, 6x-15
so:
x+6x-15 = 96
Using an unmentioned calculator, i get that x = 111/7 or 15.857143