I used a little trig, the opposite and adjacent were being used so I used tan... I used it to find h and then plugged it in the a=bh
Answer:
B and C
C and D
D and A
A and B
Step-by-step explanation:
since the diagonals cut the rectangle into isosceles triangles the base angles are congruent and vertical angles are also congruent
Answer:
2/3
Step-by-step explanation:
In the problem the question is How much longer so that means subtract.
10/12 - 1/6 =2/3
The answers comes to be for every 1 unit of pure acid (100%) add three units of 20% and you get the desired 40%
so if you need 40 L (i don't know what container sizes there are so i can't give you an exact amount just add 1 part 100% acid and 3 parts 20% acid) <span />
