This is the concept of application of quadratic expressions. Given that the height of the ball is modeled by the equation;
h=-7.3t^2+8.25t+2.1+5
The time taken for the ball to hit the ground will be given as falls;
-7.3t^2+8.25t+7.1=0
to solve for t we use the quadratic formula;
t=[-b+/-sqrt(b^2-4ac)]/(2a)
a=-7.3, b=8.25, c=2.1
t=[-8.25+/-sqrt[8.25^2+4*7.3*7.1]/(-2*7.3)
t= -0.572
or
t=1.702
since there is not negative time we take the time taken for the ball to hit the ground will be: t=1.702 sec
Answer:
The formula to find the area of the triangle is: 1/2(base x height)
Step-by-step explanation:
Answer:
i dont undstand what you mean
Step-by-step explanation:
To convert
to a percent, you must convert it to a decimal first
Divide the numerator(top) by the denominator(bottom)
5÷20=.25
All percents are based off of "100%" so multiply .25 by 100(%) which is 25%
Answer: 25%
The answer is 2.76 because you would do 69 divided by 25