I think it’s 15..
cause you replace the x with -5 and solve the problem
Side = root over area
= root over 25 = 5 cm
Answer:
47.67
Step-by-step explanation:
210/360×2×22/7×13
=47.67
Answer:
5 amperes will produce the maximum power
Step-by-step explanation:
The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by: P(c)= -12c^2 + 120c.
To find out the maximum power we need to find the vertex
formula to find x -coordinate of vertex is 
P(c)= -12c^2 + 120c is given in the form of y=ax^2+bx+c
a= -12, b = 120

c= 5 amperes will produce the maximum power
Answer:
All you have to do is multiply 45 by 0.70. You will get 31.5, then you subtract 31.5 and 45 to get the answer: $13.50
Step-by-step explanation: