You threw a rock off the balcony overlooking your backyard. The table shows the height of the rock at different times. Use quadratic regression to find a quadratic model for this data.
Time
(in seconds)
0
1
2
3
4
5
Height
(in feet)
31
482
55.8
53.8
422
21
O a. -5.3x2 +21x-27
O b.-4.8x? - 22x + 31
OC.-4.8x2 + 22x + 31
O d.-4.3x2 +23x - 35

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180

b, i believe, but not sure.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.