Answer:
15 boys and 20 girls
Step-by-step explanation:
1. Since we cant simplify 3:4 we will leave it just like that.
2. 3x+4x=35
3. We add them both to give us 7x=35
4. We divide by 7 to get x by itself which results in 35/7=5.
x=5
5. Now we found x we can create 2 seperate soulutions:
3(5)=
and 4(5)=
Therefore there are 15 boys and 20 girls in the class. This makes sense because 15/20 reduced is 3 over 4.
Answer:
4=40
Step-by-step explanation:
because you add up all those angles on staight line you get your 180 degrees.
Step-by-step explanation:
2/3 x - 1/9 x + 5 = 20
6/9 x - 1/9 x = 15
5/9 x = 15
x = 15 * (9/5) = 27.
