There is no question stated!
Answer:
7•3 = 21
Step-by-step explanation:
Improper Fraction: 21/4
Simple Fraction: 5 1/4
9x^2 - 16x + 60
Find the discriminant, b^2 - 4ac, which is the same as the value of the radicand.
(-16)^2 - 4 * 9 * 60 = -1904
Since the discriminant is negative, there will be NO real solutions, and 2 complex solutions.
Part B.
4x^2 + 8x - 5 = 0
You can tell if a quadratic is factorable if you find the discriminant and it is a perfect square. The discriminant for this quadratic is 144 so it is factorable.
(2x + 5)(2x - 1) = 0
Set each factor equal to zero.
2x + 5 = 0 2x - 1 = 0
subt 5 from both sides add 1 to both sides
2x = -5 2x = 1
divide both sides by 2 divide both sides by 2
x = -5/2 <span> </span> x = 1/2
Answer:
The Last One
Step-by-step explanation:
1/5 x 5 x 5 x 5 x 5 x 5
Because:
5 x 5 = 25
25 x 5 = 125
125 x 5 = 625
625 x 5 = 3125
3125 x 5 = 15625
And (5^3)^-2 is equal to 1/15625
Hope This Helps! :)
Answer:
L = 9.91 decibels.
Step-by-step explanation:
The loudness, L is inversely proportional to the square of the distance, d, from the source of the sound.
i.e L 
L = 
Where k is the constant of proportionality.
When d = 14 feet and L = 85 dB, then;
k = L x 
= 85 x 
= 16660
k = 16660
L = 
Thus, when d = 41 feet, then;
L = 
= 
= 9.91077
L = 9.91 dB
The loudness is 9.91 decibels.
