1x+2x = 18
3x=18
x=6
there are 6 pieces of yellow chalk
Area of triangle = 1/2 x base x height
area of triangle = 1/2 x 12 x 13
area of triangle = 78 square units
Answer:
The distance between to 2 point is 15 units.
Step-by-step explanation:
You have to apply distance formula using coordinates :
![distance = \sqrt{ {(x2 - x1)}^{2} + {y2 - y1)}^{2} }](https://tex.z-dn.net/?f=distance%20%3D%20%20%5Csqrt%7B%20%7B%28x2%20-%20x1%29%7D%5E%7B2%7D%20%2B%20%20%7By2%20-%20y1%29%7D%5E%7B2%7D%20%20%7D%20)
Let (x1,y1) be (-8,6),
Let (x2,y2) be (1,-6),
![distance = \sqrt{ {(1 + ( - 8))}^{2} + { (- 6 - 6)}^{2} }](https://tex.z-dn.net/?f=distance%20%3D%20%20%5Csqrt%7B%20%7B%281%20%2B%20%28%20-%208%29%29%7D%5E%7B2%7D%20%2B%20%20%20%7B%20%28-%206%20-%206%29%7D%5E%7B2%7D%20%20%20%7D%20)
![distance = \sqrt{81 + 144}](https://tex.z-dn.net/?f=distance%20%3D%20%20%5Csqrt%7B81%20%2B%20144%7D%20)
![distance = \sqrt{225}](https://tex.z-dn.net/?f=distance%20%3D%20%20%5Csqrt%7B225%7D%20)
![distance = 15 \: units](https://tex.z-dn.net/?f=distance%20%3D%2015%20%5C%3A%20units)
I believe it’s C, 21 divided by 7. This one doesn’t leave any extra mugs out cause 21 divided by 7 is 3, leaving 7 mugs per 3 shelves and having none left.
M = (-7-6)/(-10-6) = -13/-26 = -1/2