Answer:
k = 10
Step-by-step explanation:
the sum of any two interior angles is equal to the exterior angle of the unknown interior angle
4k+5 + 6k+10 = 115
10k + 15 = 115
10k = 100
k = 10
The point-slope form:
![y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29%5C%5C%5C%5Cm%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
We have the points (-8, -8) and (-7, 9). Substitute to the formula of a slope:
![m=\dfrac{9-(-8)}{-7-(-8)}=\dfrac{17}{1}=17](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B9-%28-8%29%7D%7B-7-%28-8%29%7D%3D%5Cdfrac%7B17%7D%7B1%7D%3D17)
Put the coordinates of the point (-7, 9) and the value of slope to the point-slope formula:
![y-9=17(x-(-7))\\\\\boxed{y-9=17(x+7)}](https://tex.z-dn.net/?f=y-9%3D17%28x-%28-7%29%29%5C%5C%5C%5C%5Cboxed%7By-9%3D17%28x%2B7%29%7D)
To turn a percent into a decimal, move the decimal point over to the left two places.
For example, 25% would be .25 as a decimal.
An easy way to remember how many places the decimal point moves is by looking at the percent sign. It has two circles on either side of the slash, so two circles = two places.
THE ANSWER IS THAT A= 1.25
4x - 2y = 10
-2y = -4x + 10
y = 4/2x - 10/2
y = 2x - 5 <==