C = 2pi(r). Find the radius of the circle first. Then multiply that by 2pi.
Pi=3.14159... 2pi = 2 x 3.14159...
Therefore C = 2 x 3.14159... x r
Pretty sure this is a waning crescent! I had a whole chapter on it!
Answer: y = - 40/9
Step-by-step explanation:
3 + 2y / 8 = 1 - y / 5
120 + 10y = 40 - 8y
10y + 8y = 40 - 120
18y = -80
y = -40 /9
Answer:
y = -2x - 5
Step-by-step explanation:
An equation of a line in slope-intercept is y=mx + b.
x and y are points on the line.
m is the slope.
b is the y-intercept.
To find this equation, we will need to find m and b.
When lines are parallel, they have the same slope.
A line parallel to y = -2x + 3 has a slope of -2.
m = -2
To find b, substitute into the equation a point on the line (-2, -1) and m = -2.
A point is in the form (x, y). So x = -2, y = -1.
y = mx + b
-1 = (-2)(-2) + b Simplify by multiplying the (-2)(-2)
-1 = 4 + b Subtract 4 from both sides to isolate b
-5 = b
b = -5 Writing the variable on the left side is standard formatting
Since we now know the y-intercept, b= -5, and the slope, m = -2, substitute them into y=mx + b to get the equation of the line.
y = -2x - 5
Answer: d.) a perfect square
Step-by-step explanation:
a.) number divisible by 2
There are three numbers divisible by 2: 2, 4, and 6. The odds of spinning one of these is 3/6.
b.) prime number
A prime number is a number that is divisible by 1 and itself. There are three prime numbers: 1, 3, 5. The odds of spinning one of these is 3/6.
c.) an odd number
There are three odd numbers: 1, 3, and 5. The odds of spinning one of these is 3/6.
d.) a perfect square
a perfect square is a number that has a whole number as a square root. There are two numbers that are perfect squares: 1 and 4. The odds of spinning one of these is 2/6.
The least likely is a perfect square with a probability of 2/6.