Answer:
49
Step-by-step explanation:
devaughn= x+15
sydney= x
set an equation adding both their ages
x+x+15=113
2x+15=113
subtract 15 from both sides
2x=98
x=49
sydney is 49
Answer:
Step-by-step explanation:
−8.5d ≥ 20
Divide both sides by -8.5:
This is the answer.
Answer:
72.3
round from 72.3333333333333333333333333333333333333333333333
Step-by-step explanation:
Add the two numbers in your ratio and divid if from one hundred
This would equal 20
So to find the percentage for the colours as they are time the two ratio number to get 40:60 this is also the percentages.
If you add five more blue parts in to the ratio and leave the red alone you will get 2:8 this would give you a 80% blue part.
So the answer is
5 parts of blue are needed to make the mixture 80% blue.
The area of the inscribed triangle = 3(6^2 x sin 120°) = 3(36sin 120°) = 3(31.18) = 93.53 square in.