Answer: No, 64/81 is not a perfect square.
Step-by-step explanation: A perfect square is a whole number multiplied by itself again to get a perfect square.
A correct example of a perfect square would be 3/9 because 3 x 3 = 9.
Answer:
See below for answers and explanations
Step-by-step explanation:
1) Substitute d=100 into the equation and solve for s:
s=sqrt(9.81d)
s=sqrt(9.81(100))
s=sqrt(981)
s≈31.32
Therefore, the speed of the wave will be about 31.3 m/s
2) Substitute d=1000 into the equation and solve for s:
s=sqrt(9.81d)
s=sqrt(9.81(1000))
s=sqrt(9810)
s≈99.05
Therefore, the speed of the wave will be about 99 m/s
Step-by-step explanation:
Let the number be x.
Answer:
x^2 + 2x + 2.
Step-by-step explanation:
Write it in factor from:
(x - (-1 + i))(x - (-1 - i)) = 0
(x + 1 - i)(x + 1 + i) = 0
= x^2 + x + ix + x + 1 + i - ix - i -i^2
= x^2 + 2x + 1 + 1
= x^2 + 2x + 2.
Answer:
-2(9x-8)
Step-by-step explanation:
We are to simplify the expression -3.1x+7-7.4x-1.5x-6(x-3/2)
Open the parenthesis
-3.1x+7-7.4x-1.5x-6(x-3/2)
= -3.1x+7-7.4x-1.5x-6x+6(3/2)
= -3.1x+7-7.4x-1.5x-6x+9
Collect like terms
= -3.1x-7.4x-1.5x-6x+7+9
= -12x-6x+16
= -18x+16
= -2(9x-8)
Hence the simplified form of the expression is -2(9x-8)
