The radius of a circle is 10. Using π, which equation expresses the ratio of the circumference of the circle to the circle's dia
2 answers:
Answer:
Step-by-step explanation:
It is given that radius of a circle is 10.
We need to write an equation which expresses the ratio of the circumference of the circle to the circle's diameter using π.
The circumference of the circle is
where, r is the radius of the circle.
Substitute r=10 in the above formula.
Divide both sides by 20.
Therefore, required equation is .
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Slope-intercept form:
y = mx + b
"m" is the slope, "b" is the y-intercept
To find "m", you can use the slope formula and plug in the two points:
The slope is 0 so:
y = mx + b
y = 0x + b [any number multiplied by 0 is 0]
y = b
To find "b", you plug in either of the points into the equation (since both of their y values are 1]
y = b
1 = b
Your equation is:
y = 1 (This is a horizontal line)
Answer:
9
Step-by-step explanation:
Create a proportion
84 divide by what gives you 12? 7
So divide 63 by 7, and you get 9.
This doesn't work with all of these problems so you can always cross multiply then divide.
12(63) = 756
84(x) = 84x
84x = 756
84x/84 = 756/84
x = 9