a boy is standing 180 metres from the base of a tree. the angle of elevation to the top of the tree is 40°. what is the height of the tree?

Solve the equation 6/7x-11/42=1/7x-5/6

What figures must be inscribed in one another so that Cavalieri's principle can be applied to the volume of a sphere?

What is the decimal form of 19/20

Three consecutive integers can be represented by n, n + 1, and n + 2. If the sum of three integers is 57, what are the integers?

A square has a side length of 10 yards. what is the length of a diagonal of the square?

A team won 3 of their first 10 games. If they win the next n games, they will have won 50% of their games. What does n equal?

The test scores of 40 students are listed below. Find P85. 30 35 43 44 47 48 54 55 56 57 59 62 63 65 66 68 69 69 71 72 72 73 74 76 77 77 78 79 80 81 81 82 83 85 89 92 93 94 97 98 89 87 85 34

How many arrangements of the letters in peppermill are there with?

Y = - 4x + 2 y = x - 3

What is the factored form of the polynomial? x2 + 9x + 20 (x - 4) (x - 5) (x - 2) (x - 10) (x + 4) (x + 5) (x + 2) (x + 10)