Answer:
Step-by-step explanation:
B is the answer
<u>Answer</u>:
Length of the envelope = 14
Width of the envelope = 5.6
<u>Step-by-step explanation:</u>
Let the width of the rectangle be x
Then the length of the rectangle will be 
Also the length of the plastic band to cover the front and back of the envolpe = 
To cover one side th band required is
=>
=>
=>
=>
=>39.4
We know that the perimeter of the rectangle is
=> 2( L + B) = 
=> 2( 
) = 19.7
=> 2( 
=> 
=> 
=> 
Now length of the envelope =
=> 
=> 
=> 14
Answer:
0
Step-by-step explanation:
Slope is Rise over Run (y / x).
For 2 points, you would take the difference of y-coordinates and divide by the difference of x-coordinates.
(Y1 - Y2) / (X1 - X2)
Since both y-coordinates are the same (ten minus ten), your slope is zero (zero divided by anything is zero).
1) y= - 2x² + 8x. It's a parabola open downward (a<0)
2) x - 2.23.y + 10.34 = 0 . Re-write it : y = (x/2.23) + (10.34/2.23), a linear equation.
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
Sure, What's up! What kinda help do you need. Give me subjects grade level.
