Discriminant = b^2 - 4ac
a = 4
b = 16
c = 16
16^2 - 4(4 x 16)
256 - (4x64)
256 - 256 = 0
Therefore it only has one root
Answer: Its B
Step-by-step explanation: Hope this helps you
First off, you really don't need to write "what percent???" here.
25% of 80 is 0.25(80) = 20.
Answer:
7
Step-by-step explanation:
2n - 6 = 8. Simplified version is n = 7
If you have a rectangle that is 2 by 2 and you dilate it by 2, the sides are now 4 x 4. So:
If you dilate it by a factor of 2, the area is 2^2 (4) times as great
A factor of 3 would have an area of 9 times as much.
Conclusion: square the scale factor to get how much greater the area would be.