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Mars2501 [29]
3 years ago
14

Need help with a math question

Mathematics
1 answer:
Hunter-Best [27]3 years ago
8 0
Whats the question that you need help with?
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2. The path of a high diver is given by y = + (2x2 – 9x – 56), where y is the height of the diver
timofeeve [1]

Answer:

The diver will be 8 feet from the end of the board when he hits the water.

Step-by-step explanation:

The diver hits the water when y = 0.

To find the distance, we have to find the values of x when y = 0.

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = (x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

In this problem, we have that:

y = 2x^{2} - 9x - 56

2x^{2} - 9x - 56 = 0

So

a = 2, b = -9, c = -56

Then

\bigtriangleup = b^{2} - 4ac = (-9)^{2} - 4*2(-56) = 529

x_{1} = \frac{-(-9) + \sqrt{529}}{2*2} = 8

x_{2} = \frac{-(-9) - \sqrt{529}}{2*2} = -3.5

It is a horizontal distance, so the answer is a positive value.

The diver will be 8 feet from the end of the board when he hits the water.

7 0
3 years ago
7. what is the volume of this object
OverLord2011 [107]

Answer:

Dont knowwwww

Step-by-step explanation:

5 0
3 years ago
Please help!!!! please help!!!!!​
Nata [24]
[True]

Natural numbers are the positive integers (whole numbers) such as 1, 2, 3, and etc. So it is true that zero is less than every natural number.

[Hundreds]

The 8 in 30,846 is in the hundreds place because the 8 stands for 800.
6 0
3 years ago
Read 2 more answers
What are the x and y -intercepts for the equation 5x - 4y = 10
balu736 [363]

Answer:

x=2

y= -2.5

Step-by-step explanation:

x int

1.) set y to 0 (5x -4(0)=10

solve for 5x=10

y int

1.) set x to 0

solve for -4y=10

4 0
3 years ago
Read 2 more answers
Geometry question in image
GREYUIT [131]

Answer:

69

Step-by-step explanation:

1. Divide the arc angle by 360.

2. then multiply the number by the radius measure

3. Finally multiply it by 2 x pi (3.14) to find the arc length

3 0
3 years ago
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