B. Isosceles. that is the correct answer
Answer:
Roughly 1.3
Step-by-step explanation:
Since we know that a quarter of the way to her basketball practice is 1/3 a mile, we just multiply 1/3 by 4 times to get our answer.
1/3 * 4 = 1.33~
Answer:
81 maybe not sure
Step-by-step explanation:
Mixture problem.
Ratio of 20% : 50% acids
=50-39 : 39-20
=11:19
total volume
=400L
vol. of 20% acid=400*(11/(11+19)=400*(11/30)=146.667 L
vol. of 50% acid=400*(19/(11+19)=253.333 L
Alternatively, use c=volume of 20%, d=vol of 50%
then
0.2c+0.5d=400*0.39
Since c+d=400, we have
0.2c+0.5(400-c)=400*0.39=156
solve for c:
0.3c=44
c=146.667 and d=400-c=253.333 as before.
