Answer:
Step-by-step explanation:
1) Parallel lines have same slope
y = 3x + 2
m = 3
(2, -4) ; m = 3
equation: y - y1 = m (x - x1)
y - [-4] = 3(x - 2)
y + 4 = 3x - 6
y = 3x - 6 - 4
y = 3x - 10
2) y = 18x + 2
m1 = 18
Slope the line perpendicular to y = 18x + 2, m2 = -1/m1 = -1/18
m2 = -1/18
(1 , -5)
![y-[-5]=\frac{-1/18}(x-1)\\\\y+5=\frac{-1}{18}x + \frac{1}{18}\\\\y=\frac{-1}{18}x+\frac{1}{18}-5\\\\y=\frac{-1}{18}x+\frac{1}{18}-\frac{5*18}{1*18}\\\\y=\frac{-1}{18}x+\frac{1}{18}-\frac{90}{18}\\\\y=\frac{-1}{18}x-\frac{89}{18}\\\\](https://tex.z-dn.net/?f=y-%5B-5%5D%3D%5Cfrac%7B-1%2F18%7D%28x-1%29%5C%5C%5C%5Cy%2B5%3D%5Cfrac%7B-1%7D%7B18%7Dx%20%2B%20%5Cfrac%7B1%7D%7B18%7D%5C%5C%5C%5Cy%3D%5Cfrac%7B-1%7D%7B18%7Dx%2B%5Cfrac%7B1%7D%7B18%7D-5%5C%5C%5C%5Cy%3D%5Cfrac%7B-1%7D%7B18%7Dx%2B%5Cfrac%7B1%7D%7B18%7D-%5Cfrac%7B5%2A18%7D%7B1%2A18%7D%5C%5C%5C%5Cy%3D%5Cfrac%7B-1%7D%7B18%7Dx%2B%5Cfrac%7B1%7D%7B18%7D-%5Cfrac%7B90%7D%7B18%7D%5C%5C%5C%5Cy%3D%5Cfrac%7B-1%7D%7B18%7Dx-%5Cfrac%7B89%7D%7B18%7D%5C%5C%5C%5C)
Answer: C. a parameter.
Step-by-step explanation:
- In statistics, a parameter is a measure ( such as population mean , population proportion... ) generated from the entire population .
- A statistics is also a measure( such as sample mean , sample standard deviation , sample proportion,..) but generated from the sample taken from population.
Given : The Department of Motor Vehicles reports that 32% of all vehicles registered in a state are made by a Japanese or a European automaker.
Here, Department as considered the entire population of vehicles registered in a state are made by a Japanese or a European automaker to find the proportion.
Thus , 32% = Population proportion of vehicles registered in a state are made by a Japanese or a European automaker
So , The number 32% is best described as <u>a parameter</u>.
Hence, the correct answer is C. a parameter.
Answer:
b, d
Step-by-step explanation:
20/-4 = -5
20 x (-1/4) = -5
Check the attached file for the answer.
Answer:
C
Step-by-step explanation:
7x + 3y = 30 (equation 1)
-2x + 3y = 3 (equation 2)
9x = 27 (subtract the two equations to eliminate y)
x = 3 (divide by 9)
7 * 3 + 3y = 30 (Substitute x = 3 into equation 1, it doesn't matter which equation you substitute into)
21 + 3y = 30 (7 * 3 = 21)
3y = 9 (Subtract 21)
y = 3 (divide by 3)
Answer is (3, 3)
