Tutors Answer Your Questions about Pythagorean-theorem (FREE)
Question 369002: Lewis Tower in Philadelphia is 400 ft. high. Suppose that a ball is projected upward from the top of the tower, and its position in feet above the ground is given by the quadratic function defined by f(t)= -16t^2+45t+400, where t is the number of seconds elapsed. How long to the nearest 10th of a second will it take for the ball to reach a height of 200 ft. above the ground?
I used the pythagorean theorem but I got 6.6 and the answer is 5.2. I don't know what I am doing wrong.
Click here to see answer by ewatrrr(24785)  |
Question 372288: I believe that I encountered a Pythagorean problem in which it could be worked with only knowing the length of one leg. It involved using a ratio between the two legs. Do I remember correctly and, if so, what are the ratios involved?
Click here to see answer by robertb(5830)  |
Question 375236: an isosceles triangle with sides 5 and base 8, and I am being told to solve it like so:
h^2+4^2=5^2
When I tried to solve it myself, I got h^2+16=25
The solution page gives me:
h^2=24-16=9
I don't understand what h^2 means, or where the 24 or 9 are coming from. Please help.
Click here to see answer by Fombitz(32388)  |
Question 378118: Lightning hit a tree three-eighths of the distance up the trunk from the ground and broke the tree so that its top landed 40 feet from the base of the trunk as shown. How tall was the tree originally? Show all work.
Click here to see answer by mananth(16946)  |
Question 385091: My question is on the Pythagorean Theorom
The question asks:
Ms. Green tells you that a right triangle has a hypotenuse of 13 and a leg of 5.She askes you to find the other leg of the triangle without using paper and pencil. What is your answer.
I tried solving it by subtracting 5 from 13 because of the one rule that says the sum of the two legs will equal the hypotenuse if it is a right triangle, but I am not sure if that works for this.
Thank you
Click here to see answer by scott8148(6628)  |
Question 389841: Danica Bianca attends a school which is 3 km east and 5 km south of their house. The plaza is 4 km west and 2 km north of the house. The streets in their neighborhood are laid out like a rectangular grid.How far is it from the school to the plaza?
Click here to see answer by mananth(16946)  |
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