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2 years ago

100 POINTS!!! PLEASE HELP ITS EZ :)

Mathematics

1 answer:

n200080 [17]2 years ago

3 0

In 2.44 seconds lindsey be 30 feet in the air.

<h3>What is Quadratic Equation?</h3>

A quadratic equation is a second-order polynomial equation in a single variable x, ax²+bx+c=0. with a ≠ 0 .

Given:

y= -16x²+33x+45

If the height is 30 feet.

30= -16x²+33x+45

-16x²+33x+45-30=0

-16x²+33x+15=0

16x²-33x-15=0

Solving the quadratic equation

x=-b±√b²-4ac/ 2a

x= 33 ± √2049/32

x= (33+ √2049)/32 and x=33-√2049/32

x=2.44 and -0.3833

Learn more quadratic equation here:

brainly.com/question/2263981

#SPJ1

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Read 2 more answers

what is the y intercept of the line with a slope of - 4/7 that also passes through the point (7 , - 7/2) ?

kondor19780726 [428]

The answer is the last option: $\frac{1}{2}$

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1. You have that the equation of the line is:

$y=mx+b$

Where $m$ is the slope of the line and $b$ is the intercept with the y-axis.

2. Therefore, you must find $b$ .

3. Then, you must substitute the points given in the problem and the slope into the equation of the line and solve for $b$ , as following:

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