The number of positive roots is the number of changes of signs there are, then decrease by 2 each time and stop when you get to 1 or 0
negative roots, sub every x with -x and reevaluate, count change of signs
decrease by 2 each time and stop when you get to 1 or 0
y=+2x⁵-x⁴-2x³+4x²+x-2
+,-,-,+,+,-
1 2 3
3 or 1 positive roots
replace x with -x ( baically flip all signs of odd powerd numbers)
y=-2x⁵-x⁴+2x³+4x²-x-2
-,-,+,+,-,-
1 2
2 or 0 negative roots
3 or 1 positive roots
2 or 0 negative roots
2nd option is answer
Answer:
Area =
square centimeter
If the circumference of the hub cap would have been smaller, then its radius would have been smaller and subsequently its area would also have been less.
Step-by-step explanation:
As we know the circumference of a circle is ![2\pi r](https://tex.z-dn.net/?f=2%5Cpi%20r)
The radius of the hub cap needs to be devised to determine the area
![= 2* 3.14*r](https://tex.z-dn.net/?f=%3D%202%2A%203.14%2Ar)
![r = \frac{83.96}{2*3.14}](https://tex.z-dn.net/?f=r%20%3D%20%5Cfrac%7B83.96%7D%7B2%2A3.14%7D)
centimeters
Area of the hub cap = ![\pi r^{2}](https://tex.z-dn.net/?f=%5Cpi%20r%5E%7B2%7D)
Substituting the devised value of r in the above equation, we get -
![3.14 * 13.37^2\\](https://tex.z-dn.net/?f=3.14%20%2A%2013.37%5E2%5C%5C)
square centimeter
If the circumference of the hub cap would have been smaller, then its radius would have been smaller and subsequently its area would also have been less.
Answer:
Its y=1/2x +2(the second one)
Step-by-step explanation:
How do you want this solved?
Step-by-step explanation:
5p + 6p -10 = -29 - 8p
11p - 10 = -29 - 8p
+10 +10 +8p
+8p = -19
19p=-19
p=-1