in 1st figure
2:1=(x+2):2
2/1=(x+2)/2
4=x+2
x=2.
Similarly in the 2nd figure
8:5=(8+3):(5+x)
8/5 = 11/ (5+x)
8(5+x) =55
40+8x=55
8x=15
x=15/8
x=1.875
Answer:
Step-by-step explanation:
A
Question how much distance is in each revolvison
analyze problem
perfect circle with diameter of 20
so, radius is 10
circle circumference=10*pi*r
31.4*2
62.8
7 out of 10 would vote for Tammy so what value (x) would vote for her out of 230. Set up a proportion comparing the two.
x= # of people who vote Tammy
7 out of 10= x out of 230
7/10= x/230
cross multiply
(7*230)= (10*x)
1610= 10x
divide both sides by 10
161= x
ANSWER: 161 people in 7th grade would vote for Tammy.
Hope this helps! :)
