Answer:

Step-by-step explanation:
we know that
The circumference of a circle is equal to

we have

assume

substitute the values and solve for r

![r=32.7/[2(3.14)]](https://tex.z-dn.net/?f=r%3D32.7%2F%5B2%283.14%29%5D)

The vertex is in essence the turning point of the parabola y = x²<span> − 10x + 2
the x coordinate of the turning point = </span>

=

= 5
when x = 5, y = (5)² - 10(5) + 2
= -23
Thus coordinate or vertex is ( 5, -23)
Answer:
230 - 151 + 180 + (43 - 12) = 290
Step-by-step explanation:
Use PEMDAS.
Evaluate the expression in the parentheses:
230 - 151 + 180 + (43 - 12)
43 - 12 = 31
230 - 151 + 180 + 31
Add and Subtract From Left to Right:
230 - 151 + 180 + 31
79 + 180 + 31
259 + 31
290
<em>None of the given options are correct. </em>
Answer:
Associative Property
Step-by-step explanation:
Associative property involves computations that has to do with regrouping of quantities. That is simply the technique employed there.
Answer:
57 I think?
Step-by-step explanation:
A=x² + 4x - 60
A=9² + 4⁹ - 60
(9x9=81) + (4x9=36) - 60
= 57