Since the x-coordinate does not change, we know immediately that this straight line is a vertical one. It does not have a slope (div. by zero is undefined).
The equation of this vertical line is x=0.
The line has no y-intercept.
A line perpend. to the given line has a slope of 0.
<h2>
Horizontal distance when projectile strikes water surface is 170 .02 feet</h2>
Step-by-step explanation:
The height is given by
We need to find when it strikes the water surface,
At water surface h = 0 feet
Substituting
Solving this quadratic equation to get x.
-32x² + 2500x + 500000 = 0
32x² - 2500x - 500000 = 0
x = 170 .02 feet or x = -91.90 feet
Negative x is not possible
Horizontal distance when projectile strikes water surface = 170 .02 feet
<h3>
Answer: 0.045</h3>
Explanation:
The sample proportion 0.617 is at the exact midpoint of the interval from 0.572 to 0.662
We can confirm this by applying the midpoint formula.
The distance from the center (0.617) to either endpoint will be the margin of error. In other words, it is half the width of the confidence interval
L = lower boundary of confidence interval = 0.572
C = center of confidence interval = 0.617
U = upper boundary of confidence interval = 0.662
We have three methods to find the confidence interval
- margin of error = U - C = 0.662-0.617 = 0.045
- margin of error = C - L = 0.617 - 0.572 = 0.045
- margin of error = (width)/2 = (U-L)/2 = (0.662-0.572)/2 = 0.045
Each yielding the same result of 0.045
With the third method, you don't need to know the center of the confidence interval.
Answer:
x=8/3
Step-by-step explanation:
x+2x+17=25
3x+17=25
3x=8
x=8/3
Answer:
A, 3x-7y=-7y+3x
Step-by-step explanation:
