A jeweler cut a rhinestone in the shape of a rhombus. If one of the angles of the rhinestone measures 130 degrees, what is the m
easure of the consecutive angle, x?
A. 180 degrees
B. 130 degrees
C. 50 degrees
D. 90 degrees
A. 180 degrees
B. 130 degrees
C. 50 degrees
D. 90 degrees
2 answers:
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Answer:
See attached
Step-by-step explanation:
Given function:
- y = -2x² + 5x + 8
Table and graph are attached
Zeros are included in the graph
<u>Zero's are obtained:</u>
x = 0 ⇒ y = 8
y = 0 ⇒ Solving quadratic equation
- -2x² + 5x + 8 = 0
- x = (-5 ± √(25 + 2*4*8))/-4
- x = 3.608
- x = -1.108
So zeros are (0, 8), (3.608, 0) and (-1.108, 0)
