Answer:
Step-by-step explanation:
1-124: (convert 1/5 to tenths)
3/10+2/10=5/10 ->1/2
so you have a 1/2 chance of getting blue or green
1-125:
1/2 of the circle is green and 1/4 of the circle is green (1/2 =2/4)
2/4+1/4=3/4 so you have a 3/4 chance of getting purple or green
1-126
a. x+8=21
just minus 8 from x an 21
x=13
b. x-31=55
add 31 to both sides
x=86
c. 3x=54
you are going to divide 3 from both sides
x=18
d. x/5=10
you want to take the reciprocal of x/5 to get rid of x (5/1) and do that to both sides
x=50
