Answer:
272.3 or just 272
Step-by-step explanation:
To find answer first find the area of the circle, then add the 18.
A=r*r*3.14 (pi) = 9*9*3.14=254.34
254.34+18=272.34
Hope this helps!!! :)
1)We have to make a line perpendicular to y=2x+3, passing through the point (0,0).
y=2x+3
m=solpe=2
The slope of the line perpedicular to y=2x+3 is m´
m´=-1/m
m´=-1/2
Point slope form:
y-y₀=m(x-x₀)
(0,0)
m=-1/2
y-0=-1/2(x-0)
y=-x/2
Therefore, the line perpendicular to y=2x+3 is y=-x/2.
2)The point on the line y=2x+3 tha is closest to the origin is the point of intersection of the two lines.
y=2x+3
y=-x/2
We can solve this system of equations by equalization method.
2x+3=-x/2
least common multiple=2
4x+6=-x
4x+x=-6
5x=-6
x=-6/5 (=-1.2)
y=-x/2
y=-(-6/5)/2=6/10=3/5 (=0,6)
Therefore: the point of the line y=2x+3 that is closest to the origin is:
(-1.2 , 0.6)
Remark
Break this down into smaller steps. Do as much as you can before considering the next part.
Step One
multiply (6*10^5) * (5 * 10^-9)
5 * 6 = 30
10^5 * 10-9 = 10^(5 - 9) = 10^-4
30 * 10^-4. But scientific notation expresses numbers between 1 and 10
30 * 10^-4 = 3 * 10^1 * 10^-4 = 3 * 10^(1 -4) = 3 * 10^-3
That's about as far as you can go with this step.
Step Two
Divide 3*10^-3 by 3 * 10^-3
When you divide anything at all by itself, you get 1.
For example 130011 / 130011 = 1
So
3 * 10^-3 divided by 3*10^-3 = 1
Answer: 1
Answer:
B) equilateral...............