The square root of 729 is in fact 27, as it is a perfect square, but this is not well known, so we can figure it out like this:
What goes into 729 that are perfect squares? 81 and 9:
Take the square root of 81 (9) and the square root of 9 (3). Move these to the outside of the square root (they will multiply with 3 since 3 is multiplied to the square root in the original problem)
Now, just multiply:
Answer:
Step-by-step explanation:
7) sorry I wont graph it but just input the points onto the graph
(-5,7)
(-2,1)
(-1, -1)
(2, -7)
8)
(-3,-5)
(0,-1)
(3,3)
(6,7)
9) 1/3
He ran 29.1km over three days
We are given the formula
H=L²<span> / f*c
where
</span>H = <span>maximum focus range/hyperfocal distance
</span><span>L = focal length of the lens
f = setting on the camera to reduce or enlarge the aperture
c = diameter of the circle of least confusion
We are to express the equation with the focal length on the left side.
So,
H f c = L</span>²
L = √Hfc
If there is 20 pencils there will be 5 erasers 20:5
