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:
m(slope)=0
Step-by-step explanation:
To find slope given two points, use the formula m = y2 - y1/x2 - x1
(-10) - (-10)/(-3) - 5
0/-8
Anything being divided from 0, or divided by 0 is always 0, so the slope is 0.
Hope this helps.
Answer:
your answer will probably be 3.
Step-by-step explanation:
Answer:
-14
Step-by-step explanation:
if n = 1.5, replace all letters labeled "n" with 1.5
5(1.5) - (20 +1.5)
5 x 1.5 = 7.5
(20+1.5) = 21.5
7.5 - 21.5 = -14
:)
