Answer:
y = - 3x + 9 or (y - 6) = - 3(x - 1)
Step-by-step explanation:
I'm assuming you are looking for the equation of the line.
First, let's find the slope of the line, which we use equation (y1-y2) / (x1-x2)
x1: 1 x2: 2
y1: 6 y2: 3
(6-3) / (1-2) = 3 / -1 = -3
The slope of the line is -3.
The equation for slope-intercept form is y = mx + b, where m is slope and b is the y - intercept.
y = -3x+b
Now substitute a set of points in (any coordinates work). I'll use (1, 6)
6 = -3(1)+b
6 = - 3 + b
b = 9
So our equation in slope intercept form is y = - 3x + 9
You can also write this in point slope form, (y-y1) = m (x-x1) m is still slope
(y - 6) = - 3(x - 1)
35,000
+ 2,000
+ 1,200
+ 120
+ 220
= 38,540 dollars
Answer:
A = 113.1 in^2
Step-by-step explanation:
The diameter is 12 inches
The radius is d/2 = 12/2 = 6 inches
The area of a circle is
A = pi r^2
Assuming pi is used by the pi button on the calculator
A = pi * 6^2
A =113.097335
Rounding to the nearest tenth
A = 113.1
The area of the path is can be solved using the equation below:
Area path = wide²
First, let us convert 3 feet to inches such as shown below:
3 feet * (12 inches / 1 foot) = 36 inches
Area of the path = 36²
Area of the path = 1296 inches²
Solving for the area of the square bricks
Area of the bricks = (3 inches)²
Area of the brick = 9 inches²
Solving for the number of bricks, we have it:
Total number of bricks = Area of the path/area of the bricks
Total number of bricks = 1296 / 9
Total number of bricks = 144 pieces
The answer is 144 total number of bricks.
Well, if the radius is 10, then the circumference is
![\frac{2*10*22}7=\frac{440}7](https://tex.z-dn.net/?f=%5Cfrac%7B2%2A10%2A22%7D7%3D%5Cfrac%7B440%7D7)
What's the unit? Either way, 22 rev. per minute means each minute you go by
![22*\frac{440}7=\frac{9680}7](https://tex.z-dn.net/?f=22%2A%5Cfrac%7B440%7D7%3D%5Cfrac%7B9680%7D7)
units per second. Now you got the linear speed, just find out the time by dividing the distance by the speed!
So, what's the unit for the radius?