1. tracy is cutting material for a triangular sail. the height of the sale must be 2 feet longer than the base. the area of a cell is 40 square feet. what is the base of the sail?

2.when are the games at a carnival involves trying to ring a bell with a ball by hitting a lever that propels the ball into the air. the height of the ball is modeled by the equation h(t)= -16t^2+39t. if the ball is 25 feet above the ground will it be hit by the ball?

Base of sail = 8 ft

If the bell is 25 feet above the ground it will not be hit by the ball.

Step-by-step explanation:

Given that,

area of sail = 40 ft²

Suppose base of sail = x

So height of sail = 2 + x

Area of triangle = 1/2 (h)(b)

                    40 = 1/2 (2+x) (x)

                    80 = x(2+x)

                    80 = 2x + x²

 x² + 2x -80 = 0

 (x-8)(x+10) = 0

  x = -10 rejected

  x = 8 accepted  

Base of sail = x = 8 ft

Given in the question

The equation of height of ball

h = -16t² + 39t

25 = -16t² + 39t

-16t² + 39t - 25 = 0

when solving this equation t's answer is in imaginary form so, if the bell is 25 feet above the ground it will not be hit by the ball.

900 degrees

step-by-step explanation:

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: