Answer: 7 feet
Step-by-step explanation:
1 foot = 12 inches
7 * 12 = 84
7 feet = 84 inches
84 inches are more than 81 inches
Answer:
The minimum number of books she must sell to make a profit is 1904.
Step-by-step explanation:
Anna is considering writing and publishing her own book. She estimates her revenue equation as R = 6.37x, and her cost equation as C = 10,071 + 1.08x, where x is the number of books she sells.
So, the condition for no loss-no gain is, C = R
⇒ 10071 + 1.08x = 6.37x
⇒ 5.29x = 10071
⇒ x = 1903.78
Therefore, the minimum number of books she must sell to make a profit is 1904. (Answer)
Answer:
see explanation
Step-by-step explanation:
Using the Addition formula for sine
sin(x ± y) = sinxcosy ± cosxsiny
Consider the left side
sin(360 - Θ ), then
= sin360°cosΘ - cos360°sinΘ
= 0 × cosΘ - 1 × sinΘ
= 0 - sinΘ = - sinΘ → verified