Answer:
Step-by-step explanation:
<u>Given function:</u>
- f(x) = -x² + bx - 65 with maximum value of 35
<u>To find </u>
<u>Solution:</u>
Maximum value is obtained at vertex as a < 0
<u>Vertex coordinate of x is:</u>
- x = -b/2a = -b / -2 = 1/2b
<u>Solving for b:</u>
- 35 = - (1/2b)² + b(1/2b) - 65
- - 1/4b² + 1/2b² = 100
- 1/4b² = 100
- b² = 400
- b = √400
- b = ± 20
See attached
I'm pretty sure it would be 5+5=10. I might be wrong. Mark me as brainliest please!
Answer:
Quadrant II
Step-by-step explanation:
Quadrant I is ( + , + )
Quadrant II is ( - , + )
Quadrant III is ( - , - )
Quadrant IV is ( + , - )
Answer:
8
Step-by-step explanation:
12-4=8
M= y2-y1/x2-x1
9-6/1-5= -3/4 or -0.75