Answer:
1
Step-by-step explanation:
9-7 = 2 (-2)
1-3 = -2
-2/-2 = 1
Step-by-step explanation:
The number of subsets=2ⁿ where n=4 members
2ⁿ=2⁴=16
Number of proper subsets=2ⁿ-1
16-1=15
Answer:
D, 312 CM.
Step-by-step explanation:
DE/C = 60/360 = 1/6
Cross-multiplying
C = 6DE = 6 x 52 = 312 CM
Use the distance formula ! Hope this helped :)