Answer:
8 and 4
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
its correct
Answer: 15.4
it "It's too short. Write at least 20 characters to explain it well." so here i am talking more!!!!
Step-by-step explanation:
slope is the rise over run
rise= X
run= Y
X/Y = slope
Answer:
16 bags for the first(30% pure) and 64 bags of the second(80% pure)
Step-by-step explanation:
If they are mixed in a ratio of x bags to y bags
(0.3x+0.8y)/(x+y) = 0.7
0.3x + 0.8y = 0.7(x+y)
Multiply both sides with 10
3x + 8y = 7(x+y)
4x = y ——(1)
x + y = 80 ——(2)
Solve simultaneously
x + 4x = 80
5x = 80
x = 16 bags
y = 4x = 64 bags
