-1/15, use the slope formula
To find the x intercept, sub in 0 for y and solve for x
y + 12 = 3(x - 9)
0 + 12 = 3x - 27
12 = 3x - 27
12 + 27 = 3x
39 = 3x
39/3 = x
13 = x.....so ur x int is 13 or (13,0) <==
and if u wanted to find the y int, u could sub in 0 for x and solve for y
Answer:
Finding slope: y2-y1/x2-x1
3-9/1+2
=-6/2
Divide 2 from both
=-3/1 or -3
Slope= -3
Finding y-intercept= y=mx+b
Choose any point on the line to plug in the x and the y then plug in the slope.
I choose (1,3)
3=-3×1+b
3=-3+b
Add 3 to both sides
6=b
Y-intercept=6
Equation: y=-3x+6
Step-by-step explanation:
The solution of cos θ = −0.3 is θ = 107.45760312 degrees
<em><u>Solution:</u></em>
Given that we have to find the primary solution of ![cos \theta = -0.3](https://tex.z-dn.net/?f=cos%20%5Ctheta%20%3D%20-0.3)
To solve this equation, you must find the unknown (theta)
![cos \theta = -0.3](https://tex.z-dn.net/?f=cos%20%5Ctheta%20%3D%20-0.3)
Use the inverse of cosine (Arccos) to find the angle measurement (in degrees) of theta
![\theta = arccos (-0.3)](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20arccos%20%28-0.3%29)
We know that arccos (-0.3) = 107.45760312 degrees
[ If you reference a unit circle or use a calculator ]
![\theta = 107.45760312^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20107.45760312%5E%7B%5Ccirc%7D)
Therefore solution of cos θ = −0.3 is θ = 107.45760312 degrees
For every 1 cup of sugar there's 3 cups of flour or vice versa. (For every 3 cups of flour there's 1 cup of sugar.)
<h2>Answer:</h2>
<u>The ratio of sugar to flour is </u><u>1 to 3</u><u>, </u><u>1:3</u><u>, or </u><u>1/3</u><u>.</u> (Option B)
Hope this helps :)