2435.56 km , there are 6 significant figures
0.002457 m, there are 4 significant figures
Mean diameter = 12800 km (approx.)
1 light year = 9.46 * 10^15 meter
way of solving depends upon the question.
By the way, the easiest method of doing multiplication is Laplace method(which is traditional method). Search the method in google or consult your teacher.
Conservation of linear momentum states that " In absence of external force, the total momentum of the body remains constant in a given direction."
Such type of equation is non-deterministic equation.
Since, though there are two unknown variables but more than two equations to solve them.
From such kind of equations, we get the wrong result.
So, be careful from next time with such kind of solution before attempting it.
Regarding even or odd function, we have following definition.
Even function : The function is even if it satisfy the relation: f(x) = f(-x)
For example: f(x) = x^2 is even function since f(x) =f(-x) = x^2
Another example is : f(x) = cosx
Odd function: The function is odd if it satisfy the relation : f(x) = -f(-x)
For example: f(x) = sinx
f(x) = x^3, etc
For the given problem , f(x) = 2x^2 +1 which satisfy the relation f(x) = f(-x)
So, it is an even function.
Hope this helps you to clear your doubt about even or odd function.
Here,
Basic salary = $1800
Commission = 2.5 % of total sales = 2 . 5% of $178,740 = $ 4468 . 50
Total earning in the month of June = Basic Salary + Commission
=$1800 + $ 4468.50
= $ 6268 .50 which is the required answer.
Though plane is a complex subject to define.
But I'll try to explain it you so that you can understand easily.
You must have seen white board, exercise book, book, etc. So, we can call it as the plane of white
board, plane of exercise book, plane of book respectively.
You must have seen the simple figures like triangle, rectangle, circle,etc.
They all are plane figures.
Hope you understand it to some extent.