The surface area S (r) (in square meters) of a spherical balloon with radius r meters is given by S (r)=4pir^2 The radius P (t) (in meters) after a seconds is given by P (t)5/3t
Write a formula for the surface area N (t)(in square meters) of the balloon after t seconds.

1. are the triangles similar and if so why? what is the value of x? show your work.

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap