It is 2/3s I know the answer but I don't know the equation, pls some one help
The three main log rules you'll encounter are
- log(A*B) = log(A) + log(B)
- log(A/B) = log(A) - log(B)
- log(A^B) = B*log(A)
The first rule allows us to go from a log of some product, to a sum of two logs. In short, we go from product to sum. The second rule allows us to go from a quotient to a difference. Lastly, the third rule allows to go from an exponential to a product.
Here are examples of each rule being used (in the exact order they were given earlier).
- log(2*3) = log(2) + log(3)
- log(5/8) = log(5) - log(8)
- log(7^4) = 4*log(7)
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Here's a slightly more complicated example where the log rules are used.
log(x^2y/z)
log(x^2y) - log(z)
log(x^2) + log(y) - log(z)
2*log(x) + log(y) - log(z)
Hopefully you can see which rules are being used for any given step. If not, then let me know and I'll go into more detail.
Answer:
perfect square roots is when you have two of the same number that if you multiply them you get it. Example: the square root of 36 is six, because six times another six is 36- so 36 is a perfect square root number. 20 doesn't have a perfect square root because there are no two of the same numbers that will get you 20.
The answer is £72.
Explanation:
Decrease: (1-40%)
120 x (1-40%)
= 120 x 60/100
= 120 x 3/5
= 360/5
= £72
Step-by-step explanation:
It is given that,
Initial speed of the stone, u = 170 ft/s
It is thrown down from a height of 1020 feet.
We need to its height after t seconds. It can be calculated using second equation of kinematics as follows :
h₀ is initial height, u = -170 ft/s as the stone is throwing down and g = -32ft/s²
Putting values, we get :