The answer is 4 hope this helps
Answer:
5/6
Step-by-step explanation:
1/3 + 1/2 = 5/6
27 students is basically the sum of their ratios 4:5
We can define the proportion with an arbitary variable x ->
4x:5x
Which is the ratio of packed to bought lunch. Therefore, 4x + 5x = 9x. 9x =27
x=3
The students that bought their lunch were the 5x group, therefore 15 students bought lunch.
Answer:
7/2 and 3
Step-by-step explanation:
using quadratic formula
{-(-13) +- √(-13)^2 - 4(2)(21) } /2(2)
-(-13)+1 / 4 = 7/2
-(-13)-1 / 4 = 3
Answer:
1,5
Step-by-step explanation:
