I do not under stand need more info
Answer: 5.4
Step-by-step explanation:
Use cosine to find the adjacent side.
cosine = adjacent/hypotenuse
Substitute these values in the cosine equation:
cos(39) = x/7
7*cos(39) = x
Use a calculator to find the value of x:
x = 5.4
AB is divided into 8 equal parts and point C is 1 part FROM A TO B, so the ratio is 1:7, with C being 1/7 of the way. The ratio is k, found by writing the numerator of the ratio (1) over the sum of the numerator and denominator (1+7). So our k value is 1/8. Now we need to find the rise and the run (slope) of the points A and B.
. That gives us a rise of -4 and a run of 12. The coordinates of C are found in this formula:
. Filling in accordingly, we have
which simplifies a bit to
. Finding common denominators and doing the math gives us that the coordinates of point C are
. There you go!
Slope: 1/4
A point on the line: (0, 17/4)
I rewrote the equation in slope intercept form (y=mx+b), it was y=1/4x+17/4
The slope is m, and b is the y intercept (where the line crosses the y - axis), that's the easiest point to find if you have the equation.
8x = 44 -4
8x = 40
x = 40/8
x = 5