Answer:
just use the concept that if two lines are perpendicular then product of slopes is -1
then you can find slope of other line by using -1/m1
where m1 is slope of the line given
then for that m2.use 2 point form of a line to find it's equation which passes through (4,-6)
Answer:
The cost he will pay for 10 rides will be $70 and for r rides will be .
Step-by-step explanation:
The price of admission into the park is $20.The price for each ride is $5David takes 10 rides,So, the cost he will pay if he took 10 rides will be,If he had r rides,So, the cost he will pay if he took r rides will be,Therefore, the cost he will pay for 10 rides will be $70 and for r rides will be.
!!! hope this helps !!!!
Answer:
89.84375
Step-by-step explanation:
Given that on a finance exam, 15 accounting majors had an average grade of 90. On the same exam, 7 marketing majors averaged 85, and 10 finance majors averaged 93.
To find weighted mean.
Here weights can be considered as number of majors in each subject
![Marks x 90 85 93\\Weights 15 7 10\\Product 1350 595 930\\](https://tex.z-dn.net/?f=Marks%20x%20%20%20%20%2090%20%20%20%20%20%20%20%2085%20%20%20%20%20%20%2093%5C%5CWeights%20%20%20%20%2015%20%20%20%20%20%20%20%20%20%207%20%20%20%20%20%20%20%20%2010%5C%5CProduct%20%20%20%20%201350%20%20%20%20595%20%20%20%20%20930%5C%5C)
Weighted total = 1350+595+930 = 2875
Weighted mean = weighted total/total students
![=\frac{2875}{32} =89.84375](https://tex.z-dn.net/?f=%3D%5Cfrac%7B2875%7D%7B32%7D%20%3D89.84375)
4,610 divided by 16 is 288.125
Work:
Answer:
-20x^4y + 40x^3y^2.
Step-by-step explanation:
-5x^3y(4x-8y)
= -5x^3y * 4x + -5x^3y * -8y
= -20x^4y + 40x^3y^2