A calculator was used to perform a linear regression on the values in the table. The results are shown to the right of the table.
1
10
7
LinReg
y = ax +b
a=-3.1
b=12.9
r2=.9886831276
r=-.9943254636
3
0
-2
What is the line of best fit?
O A. y = 12.9x-3.1
B. y=-3.1% +12.9
C. -0.994 = -3.1x + 12.9
D. y=-0.994x + 12.9

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

597

step-by-step explanation:

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2