Given two points; A(x₁,y₁) and B(x₂,y₂), the slope "m" is:
m=(y₂-y₁)/(x₂-x₁) or m=(y₁-y₂)/(x₁-x₂)
Therefore:
(-9,5)
(-7,10)
m=(10-5) / (-7-(-9))=5/(-7+9)=5/2
Answer: D. 5/2
You can cut the sand which down the middle one way then turn it and cut it down the middle again. Making a cross or X pattern
Answer:
a) x= 5 or x= -3
b) x = -4 +
or -4 - ![\sqrt{26}](https://tex.z-dn.net/?f=%5Csqrt%7B26%7D)
Step-by-step explanation:
a)
- 2x - 15 =0
x =
or ![\frac{-(-2) -\sqrt{(-2)^{2} - 4(1)(-15)}}{2(1)}](https://tex.z-dn.net/?f=%5Cfrac%7B-%28-2%29%20-%5Csqrt%7B%28-2%29%5E%7B2%7D%20-%204%281%29%28-15%29%7D%7D%7B2%281%29%7D)
x= 5 or x=-3
b)
+ 8x - 10 =0
x =
or ![\frac{-(8) -\sqrt{(8)^{2} - 4(1)(-10)}}{2(1)}](https://tex.z-dn.net/?f=%5Cfrac%7B-%288%29%20-%5Csqrt%7B%288%29%5E%7B2%7D%20-%204%281%29%28-10%29%7D%7D%7B2%281%29%7D)
x = -4 +
or -4 - ![\sqrt{26}](https://tex.z-dn.net/?f=%5Csqrt%7B26%7D)
$18. Multiply 30 by 0.4 and subtract that value from 30 to get the price after the percentage taken away.
1. Height and weight 2. As height increases weight increases