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Mashcka [7]
3 years ago
12

8-7x- x2 x+5/х+8 9x -9 Every step on how you got your answer.

Mathematics
1 answer:
Mrac [35]3 years ago
8 0

Answer:11

Step-by-step explanation:

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An archway is modeled by the equation y = -2x2 + 8x. A rod is to be placed across the archway at an angle defined by the equatio
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1) y= - 2x² + 8x. It's a parabola open downward (a<0)  
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To find the intersections between 1) & 2), let 1) = 2)
-2x² + 8x = (x/2.23) + (10.34/2.23) 
-2x² + 8x - (x/2.23) - (10.34/2.23) =0 ; solve this quadratic for x values:

x' (that is A) = 0.772 & x" (that is B) = 3. (these are the values of x-intercept (parabola with line). To calculate the y-values, plug x' & x' in the equation:
for x' = 0.772, y = 0.34 → B(0.772 , 0.34)
for x" = 3, y = 0.016     → A(3 , 0.O16)
So B IS AT 0.34 Unit from the ground
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3 years ago
Elijah put 2x+3 dollars in the bank the first week. The following week he doubled the first week’s savings and put that amount i
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I believe the answer would be $79.50.

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3 years ago
What’s the area?<br> yahshjsjsjshshjdjxndndn
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Step-by-step explanation:

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2 years ago
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