1. (10 points. ) let a[1. N] be an integer array where n ≥ 1. Also let a[i] = i for 1 ≤ i ≤ n. Does a represent a min-heap? prove that it does, or that it does not.

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations

If log_3(x)=4.5 and log_3(y)=3, what is log_3(x^2/y)? a. 3b. 6.75c. 6d. 1.5

Multiply sixth of sixty six by a half of ten show step by step method