A group of 80 students in colledge where surveyed. they were asked which of french or spanish they studyed

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?