area of circle = π(7^2) = 49π prob of landing in circle = 49π/420 = 7π/60 = appr .3665 ignoring any leaves that fall partially either on the circle or the edge of the yard
GEOMETRY CIRCLES PLEASE
This is just too easy. Remember that both tangents to the same circle from an exterior point are equal. so AB = AC but AC is also tangent to the small circle so AC = AD but AD is also a tangent to the circle at the right so AD = AE Since the are all equal , and AB = 15 each on...
make a diagram showing a sideview. remember the angle of depression from the helicopter view is equal to the angle of elevation from groundview. So I have a right-angled triangle, with a height of 105 (opposite side), the adjacent side of x and an angle of 30.5 take it from there
first of all use the rules of logs y = ln (1 - x^2)^(1/2 = (1/2) ln (1 - x^2) now ... dy/dx = (1/2) (-2x)/(1-x^2) = -x/(1-x^2)
My interpretation of the wording first year = 47500 2nd year = 47500(1.23) third year = 47500(1.23)^2 fourth year = 47500(1.23)^2 (1.12) = .....
You have the same base, so (8^6/8^4)(8/2) = 8^(6-4+2) = 8^4
when is .15t + 26.50 = .25t + 14.50 multiply by 100 to clean up the numbers 15t + 2650 = 25t + 1450 -10t = -1200 t = 120 minutes at 120 minutes the charge would be the same
Four times a number is 21 more than the number ----> 4x = 21 + x 3x = 21 x = 7 Anna "thought" the answer is 7 Now you can be 100% sure that the answer is 7
Ummmh, the ratio of radius to diameter is always 1 : 2
z^-9 is the same as 1/z^9 both answers are correct