15x + 30y = -10....reduce by dividing by 5
3x + 6y = -2...same as first equation...same line ..means infinite solutions
The proportion is simply a matter stating the ratios as fractions, setting two fractions equal each other and cross multiplying.
For example:
2/x=3/9.
You need to cross multiply in order to get your answer. so 9(2)=x(3)
18=3x
6=x.
Thats how you solve a proportion.
Hope this helped :)
Have a great day
∠A and ∠H are Alternate exterior angles!!
Answer:
134
Step-by-step explanation:
The ratio of Type O donors to total donors was ...
... 37 : (37+43) = 37 : 80
So, 37/80 is the fraction of total donors that were Type O.
Then the number of Type O donors expected in a group of 290 is ...
... (37/80) · 290 = 134.125 ≈ 134