Answer:
Step-by-step explanation:
step 1
Find the radius of the circle
we know that
The circumference of a circle is equal to
we have
substitute the values
step 2
Find the area of the circle
The area of the circle is equal to
substitute the values
First you'll need to isolate the equations so that y is on one side.
y is already on the left side in the second equation, so let's do the same for the first equation.
x+3y > -3
1. Subtract x from both sides.
3y > -3-x
2. Divide both sides by 3.
y > -1-1/3x
Now you have two equations that you can graph.
- y > -1-1/3x
- y < 1/2x + 1
I'll try to explain how to graph them, but I'll also attach a graph.
y > -1-1/3x
- Go to -1 on the y axis and go down 1, over 3 units. The line will be a dotted line because > is not equal to as well. Since it is greater than, >, you will shade above the line you make.
y < 1/2x + 1
- Go to 1 on the y axis and go up 1, over 2 units. The line is also dotted because < is not equal to (≤). Since it is less than, <, you will shade below the line you make.
Answer is:
Here is the final graph.
The red line is y > -1-1/3x, the blue line is y < 1/2x + 1.
Answer:
13.5 Minutes
Step-by-step explanation:
First you divide 128 by 3 to get the WPM (Words Per Minute) that gets you an average speed of 42.66 WPM so you then divided the total amount of words (576) by 42.66 to get the answer of 13.5 Minutes or to type 576 words.
Answer:
= -4539
Step-by-step explanation:
147 + 130 + 113 + 96 +
arithmetic, with
a = 147 and d 130 - 147 = -17
Sn = (n/2)(2a + d(n - 1))
S34 = (34/2)(2*147 - 17(34 - 1))
= 17(294 - 561)