The x - intercepts of the equation is x = 0
<h3>What is x - intercepts ?</h3>
X - intercept refers to the value of x when y = 0
On a graph this refers to the value where the graph cuts the x axis
The given function is
y = ( 4x² - 36x ) / ( x - 9 )
equating y to zero and factorizing the function gives
0 = ( 4x² - 36x ) / ( x - 9 )
0 = 4x ( x - 9 ) / ( x - 9 )
0 = 4x
x = 0
hence at y = 0, x is 0
Learn more about x intercepts at:
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Answer: x-y= -3.... I'm just here to help so I don't know if its the right answer but if it is let me know.
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>The area of the flooring:</u>
- A = 1/2*8*(13.5 - 7.5) + 1/2(8 + 4 + 18)(7.5) = 136.5 ft²
<u>Cost of flooring:</u>
Step-by-step explanation:
after I answered the other one(s), you should be really able to do this yourself.
it is precisely the same method and formula just with different numbers.
what's the problem now ?
y = -16x² + 247x + 141
we assume, the ground is at 0 ft.
so, we need to solve
0 = -16x² + 247 x + 141
the general solution for such quadratic equations is
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
a = -16
b = 247
c = 141
x = (-247 ± sqrt(247² - 4×-16×141))/(2×-16) =
= (-247 ± sqrt(61009 + 9024))/-32 =
= (-247 ± sqrt(70033))/-32
x1 = (-247 + 264.6374879...)/-32 = -0.551171497... s
x2 = (-247 - 264.6374879...)/-32 = 15.9886715... s
again, the negative solution for time did not make any sense, so, x2 is our solution.
the rocket will hit the ground after about 15.99 seconds.
Hope this helps. Answer will be on the image.
