1) Since order does not matter, 10C5 = 252.
2) I don't think I understand the 2nd question, can you elaborate.
Answer:
x ≈ 1091.63
Step-by-step explanation:
Using the rule of logarithms
x = n ⇔ x = 
note that ln x is to the base e
Given
ln(x + 5) = 7, then
x + 5 = 
( subtract 5 from both sides )
x = - 5 ≈ 1091.63 ( nearest hundredth )
Answer:
3
Step-by-step explanation:
Answer:
857
Step-by-step explanation:
70th term = a + d(n-1)
d= 29-17=12
a=29
n-1 = 69
70th term = 29 + 12×69
= 29 + 828
= 857
Scale of the model = 3.5 / 10.5 = 1/3
so the length of the model = 1/3 * 12 = 5 feet
Area of the scale model = 4 * 3.5 = 14 sq ft
