Answer:
It rotates 50 times a second
Step-by-step explanation:
There is 60 seconds in a minute,so all you have to do is Divide 30,000 by 60 and you get 50!
We need to divide 4,971 by 10 until its a number less then 10.
4,971 / 10 = 497.1
497.1 / 10 = 49.71
49.71 / 10 = 4.971
Now, 4.971 is less then 10, so, we can write this into scientific notation.
4.971 * 10^?
We need to know what power we add to 10 to get 4,971. We can solve for looking at the number of times we divided. As you can see above, we divided 3 times so that will be the power of 10.
4.971 * 10³
Best of Luck!
The algebraic expression for: the sum of a number and 5 decreased by twice the number is (n + 5) - 2n
<h3>Algebra</h3>
let
sum of a number and 5
= n + 5
decreased by twice the number
= -2(n)
= - 2n
sum of a number and 5 decreased by twice the number
= (n + 5) - 2n
= n + 5 - 2n
= 5 - n
Therefore, the algebraic expression which can be used to represent; the sum of a number and 5 decreased by twice the number is (n + 5) - 2n
Learn more about algebra:
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Answer:
Step-by-step explanation:
-1/4 - (-3/5) =
-1/4 + 3/5 =
-5/20 + 12/20 =
7/20 <==
