conjecture of a circle and triangle

complete the conjecture: The center of a circle inscribed in a triangle is the same point as the intersection of the triangle's _?_.

properties of equality

m<1=35 and the m<2=35. What property justifies the conclusion: m<1=m<2?

circumference and area of a circle

If the circumference of a circle is 30 millimeters, what is its area?

circle circumference and square perimeter

A circle and a square both have an area of 441 square inches. What are their perimeters(circumferences)?

solve for x

x/18=21/4

Volume - tennis ball can

A cylindrical can is just big enough to hold three tennis balls. The radius of a tennis ball is 5 cm. What is the volume of air that surrounds the tennis balls? Please explain..

Dimensions/Perimeter

Three buildings are connected together as one. One section is 9'2", another is 45'8" x 16'3" and the last one is 18'9" x 15'8". (The shape is a backward square letter c) What are the dimensions of the courtyard and what is the perimeter of the building? Please explain...

4U- conics problem!!!

This is a conics problem that i have encountered and have problems in solving it....well i have started it but i end up with too four equations and too many variables. However, i didn't solve it in the parametric way so i suspect it could be easier but i do have problems in solving most conics ques via the parametric way. Wel ...continues

Graph

Graph the linear equation for the indicated values of the independent variable.show this on a Graph as well as the formula V=50n + 30, 0.1<= n <= 0.9

geometric sequence

using the formular Sn find the sum for the geometric sequence 6 (3) E (/) (3)i i-1 (2)