Answer:
4y = 3
Step-by-step explanation:
To subtract the 2nd equation from the first, negate all three of the second equation terms: 3x + 2y = -4
and then add (combine) this result to (with) the first equation:
-3x + 2y = 7
3x +2y = -4
----------------------
4y = 3 (this is the desired result))
Answer:
Step-by-step explanation:
the instruction say put it in this form Ax +Bx = C , but i'm sure they were meant to say this Ax +By = C note the X and Y differences. I'll use the latter form, b/c that's the "standard" form
find the slope:
m = -11 - (-5) / -10-5
m = -11 + 5 / -15
m = -6 / -15
m = 2/5
y-(-5) = 2/5(x-5)
y + 5 = 2x/5 -2
y = x - 7
- x +y = -7
There you go, the right answer :P
To answer your question the answer will be and or equal to 8z that is the answer.
If you take the point on the bridge directly beneath the lowest point on the cable to be the origin, then the parabola has equation
300 ft to either side of the origin, the parabola reaches a value of <em>y</em> = 90, so
Adding these together eliminates <em>b</em> and lets you solve for <em>a</em> :
Solving for <em>b</em> gives
So the parabola's equation is
150 ft away from the origin, the cable is at a height <em>y</em> of
ft above the bridge.
whats the figure? I need the background knowledge