1 5/6 is the correct answer.
Answer:
no real solutions
Step-by-step explanation:
the given quadratic equation is 3x²-x+5=0
in the equation:
a=3
b=-1 (in front of the x)
c=5
the quadratic formula is (-b±√(b²-4ac))/2a
substitute the numbers into the formula
(1±√(1-4(3*5))/6
solve the expression under the square root:
√(1-4(3*5))
√(1-4(15))
√(1-60)
√-59
you cannot find the square root of a negative number, so the answer is no real solutions
Hope this helps!
Answer:
40mph
Step-by-step explanation:
Using D = rt, the current variables we have are
D = 20 miles
t = 30 minutes
Since the goal is rate, we alter the equation to r = D/t.
In addition, we have to convert minutes into hours so we can
r = (20 / 30)*2/2
r = (40/60)
60 minutes is converted into an hour so the rate <em>r</em> is 40 miles per hour.
r = 40/1
