Which of the following circles lie completely in the fourth quadrant
1 answer:
Answer:
C.(x-5)²+(x+5)=9
D (x-9)²+(y+9)²=16
Step-by-step explanation:
Use a graph tool to visualize the circle.See attached
You can also see that in the options
C. circle has center (5,-5) and radius 3 which will form in 4th quadrant
D. Circle has center (9,-9) and radius 4 which will still form in 4th quadrant
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Answer:
0.4375
Step-by-step explanation:
Answer:
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2x - 10 = 30
2x = 40
x = 20
Answer:
4.1 sec
Step-by-step explanation:
h(t)=-3.2t^2+12.8t+1
h(t)=-3.2(t^2-4t)+1
h(t)=-3.2(t^2-4t+4-4)+1
h(t)=13.8-3.2(t-2)^2
For the ball to touch ground, h(t)=0.
13.8-3.2(t-2)^2=0
(t-2)=2.0766
t=4.07≈4.1 sec.