Answer:

Step-by-step explanation:
The equation given is:

Using quadratic formula:

From the question:
a = 2, b = -4, c = 7
Therefore:

=> 
Answer:
8-5 times R
Step-by-step explanation:
you subtract 8-5 to get that answer and then you do less than twice the number r i think this is correct hope it helps :)
59
47 - 11 = 36
23 + 36 = 59
I hope this helps. Brainliest appreciated.
÷

= 7, but Im not 100% sure if thats right. You should pick someone else's answer.
Step-by-step explanation:
A= πr^2
r = √(A/π)
r = √(676π/π)
r = 26
C = 2πr
52π
= 163.36