Answer:
In a triangle, the segment joining the midpoints of any two sides will be parallel to the third side and half its length ⇒DE is parallel to AC, and DE = 8, AC=16.
Similarly, DF is parallel to BC, and DF=6, BC=12
Step-by-step explanation:
Similarly, EF is parallel to AB, and EF=3.5, AB=7
Hence, perimeter of ΔDEF = 8+6+3.5 = 17.5
x = 4.
Distribute, isolate and solve.
There are 40 problems on the test
Let p = the number of problems on the test
The number of problems on the test times the percent correct is the number correct
p * 85% = 34
p * .85 = 34
Divide each side by .85
p * .85/.85 = 34/.85
p = 40
42.6 is 66 2/3% of 63.9
the answer is : 63.9
