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8_murik_8 [283]

2 years ago

10

Whats 9+10 ??????????????????????

2 answers:

zhuklara [117]2 years ago

6 0

Answer:

19

Step-by-step explanation:

yerreeer cause u add duh

Ghella [55]2 years ago

3 0

Answer: Well it depends on what your referring to 10+9 is 109, 9+10 is sometimes considered to be equal to 21 but that is just mere speculation the only answer to make sense has to be 910, but alas the obvious answer was wrong. By entering in the equation on a calculator your answer would be 19. I know math is ridiculous

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If your car goes 50 kilometers in 2 hours,what is its average speed

Georgia [21]

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Step-by-step explanation:

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2 years ago

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Ludmilka [50]

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5 0

2 years ago

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

2 years ago