Answer: y = (-1/2)x+1
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Explanation:
D = Midpoint of A and B
D = (x,y)
x = [(xCoord of A)+(xCoord of B)]/2
x = [(-4)+(4)]/2
x = 0/2
x = 0
y = [(yCoord of A)+(yCoord of B)]/2
y = [(-2)+(4)]/2
y = 2/2
y = 1
So the midpoint of AB is D = (x,y) = (0,1)
The median for point C will go through the points D = (0,1) and C = (18,-8)
Let's find the slope of line DC
m = (y2-y1)/(x2-x1)
m = (-8-1)/(18-0)
m = -9/18
m = -1/2
Then use the slope m and one of the points D or C to find the y intercept b
I'm going to use the coordinates of point D
y = m*x+b
1 = (-1/2)*(0)+b
1 = 0+b
b = 1
So the equation of line DC is y = (-1/2)x+1, which contains the median that goes through point C
Answer:
<h2>y = 5x + 5</h2>
Step-by-step explanation:
<u><em>The line in slope intercept form</em></u> :
y = mx + p
Where m is the slope
and p is the y value of the y intercept point
…………………………………………………………………
the y intercept point is (0 , 5) then p = 5
<u><em /></u>
<u><em>Slope calculation</em></u>:
(0 , 5) and (2 , 15) are two points of the line , then
<u><em>Conclusion</em></u>:
y = 5x + 5
Answer:
B) 120
Step-by-step explanation:
Initial problem: 90/x = 3/4
Cross multiply to get:
90*4 = 3x
360 = 3x
x = 120
Check (optional):
90/120 = 3/4
(simplify):
3/4 = 3/4 so it is correct
If you're confused about any of these steps, just let me know and I'll try to help!
Answer:
x = 5, y = 4
Step-by-step explanation:
x + 4y = 21
4x - 16 = y
x + 4(4x - 16) = 21
x + (16x - 64) = 21
(17x - 64) = 21
17x = 85
x = 85/17
x = 5
___________________
x + 4y = 21
5 + 4y = 21
4y + 5 = 21
4y = 16
y = 16/4
y = 4
___________________
Answer:
26280 hours
Step-by-step explanation:
your welcome