3y - x = a
To solve for y we isolate the y variable.
3y = x + a
y = (x + a)/3
Answer:
x-coordinate = 0
Step-by-step explanation:
(-10,1) , (5,-5)
m = (y₂ - y₁)/(x₂ - x₁) = ( -5 - 1 ) / ( 5 - [-10] )
= -6 / ( 5 + 10)
= -6/15 = -2/5
y - y₁ = m (x - x₁)
y - 1 = (-2/5) ( x - [-10] )
y - 1 = (-2/5) ( x + 10 )
5 * (y -1) = -2 (x + 10)
5y - 5 = -2x -20
2x + 20 + 5y -5 = 0
2x + 5y + 15 = 0
Another point (a, -3) in on this line
2 * a + 5 * (-3) = -15
2a -15 = -15
2a = -15 +15
2a = 0
a = 0
x-coordinate = 0
5 grapes/x grapes = 2 strawberries/18 strawberries....
so x would be 45
Answer:
28 and 12t
Step-by-step explanation:
4 x 7
4 x 3t
Answer: ![x=11.47](https://tex.z-dn.net/?f=x%3D11.47)
Step-by-step explanation:
Given the angle of 55 degrees, you know that the adjacent side is "x" and the length of the hypotenuse is 20.
Therefore, you need to remember the following identity:
![cos\alpha=\frac{adjacent}{hypotenuse}](https://tex.z-dn.net/?f=cos%5Calpha%3D%5Cfrac%7Badjacent%7D%7Bhypotenuse%7D)
Then, knowing that:
![\alpha=55\°\\adjacent=x\\hypotenuse=20](https://tex.z-dn.net/?f=%5Calpha%3D55%5C%C2%B0%5C%5Cadjacent%3Dx%5C%5Chypotenuse%3D20)
You need to substitute these values into
:
![cos(55\°)=\frac{x}{20}](https://tex.z-dn.net/?f=cos%2855%5C%C2%B0%29%3D%5Cfrac%7Bx%7D%7B20%7D)
Now, you can solve for "x":
![20*cos(55\°)=x\\x=11.471](https://tex.z-dn.net/?f=20%2Acos%2855%5C%C2%B0%29%3Dx%5C%5Cx%3D11.471)
Rounded to the nearest hundreth:
![x=11.47](https://tex.z-dn.net/?f=x%3D11.47)