Answer:
b = 69/2 mm
Step-by-step explanation:
Let h: height of triangle
Let b: base length
Writing the height in terms of the base length: h = 2b + 5 mm
We equate that to the given height: 74 mm = h = 2b + 5 mm.
Solving this for b, we subtract 5 mm from both sides, obtaining
69 mm = 2b.
Then b = 69/2 mm
Answer:
27 years
Step-by-step explanation:
21 × 2 = 42
42 - 15 = 27
Slot method
12 in 1st slot
11 in 2nd slot
10 in 3rd slot
12*11*10=1210 possible permutations
