The area of a circle is 132.7 square cm. Find the diameter.
2 answers:
Answer:
13
Step-by-step explanation:
To find the diameter, use the diameter formula.
d = 2r (r = radius)
In this case, we don't have a radius so to find the radius, use the radius formula.
r = (A = area)
So, r = square root of 132.7/pi
r is approximately 6.5
Now we have the radius so we can find the diameter:
d = 2(6.5)
d = 13
Diameter is 13
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The equation of the line perpendicular to y = 3x + 6 and containing the point (-9,-5) is
<em><u>Solution:</u></em>
Given that line perpendicular to y = 3x + 6 and containing the point (-9, -5)
We have to find the equation of line
<em><u>The slope intercept form is given as:</u></em>
y = mx + c ------ eqn 1
Where "m" is the slope of line and "c" is the y - intercept
<em><u>Let us first find the slope of line</u></em>
The given equation of line is y = 3x + 6
On comparing the given equation of line y = 3x + 6 with eqn 1, we get,
m = 3
Thus the slope of given equation of line is 3
We know that <em>product of slopes of given line and slope of line perpendicular to given line is equal to -1</em>
Slope of given line slope of line perpendicular to given line = -1
Let us now find the equation of line with slope and containing the point (-9, -5)
Substitute and (x, y) = (-9, -5) in eqn 1
<em><u>Thus the required equation of line is:</u></em>
Substitute and c = -8 in eqn 1
Thus the required equation of line perpendicular to given line is found
Solving Two- Step Equations:
First you have to add or subtract the number without the variable, x, then divide with the variable with x in it.
1.) -2 - 2=26
Answer: x= -14
Try some on your own, if you still need help comment back!
First you have to add or subtract the number without the variable, x, then divide with the variable with x in it.
1.) -2 - 2=26
Answer: x= -14
Try some on your own, if you still need help comment back!