This looks like a parabola so:
y=x^2 - 20x + 15 --> x^2 - 20x +15=y
(x^2 -20x)=y - 15 --> (x - 10)^2=y - 15 +100 ( used complete the square)
(x - 10)^2=y + 85
I'm not sure what you mean by this, but if you mean rounding, I got an answer.
Say you're rounding 24 to 30.
24 is closer to 20 than 30.
But if you were rounding 25 to 30, 25 would be closer to 30, not 20.
I guess it's kind of confusing.
Answer:
87.92
Step-by-step explanation:
3.14(a² + ab) where a = 4 and b = 3
Plug the given numbers into the appropriate values. Remember to follow PEMDAS.
3.14((4)² + (4)(3))
3.14(16 + 12)
3.14(28)
87.92
You can use the trig ratios. Draw a diagram to see which one is appropriate.
Tan would be used.
Tan29=x/20
20Tan29=x
Put this into your calculator and see what you get
Answer:
54%
Step-by-step explanation: