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The second of two numbers is 4 times the first their sum is 45?
This problem asks us to find 2 numbers, n1 and n2, with the following relations between them: * n2 = 4 n1 * n1 + n2 = 45 Substituting the first equation into the second one gives us: * n1 + 4n1 = 45 which gives us * n1 = 9. We can now use this solution to find n2 with the first equation * n2 = 4 n1 = 36 So the first number is 4, the second number is 36.
What is n times n?
The product of n multiplied by itself is written as n^2, which is read as "n squared." This is because when you multiply a number by itself, you are essentially squaring that number. So, n times n is equal to n^2.
What does 42 decreased by twice a number means?
If you have a number x, then twice that number is 2*x and so the expression means 42 - 2*x
What is the equation for the number of diagonals that can be formed in a polygon?
The equation is: 0.5*(n2-3n) = diagonals whereas n is the number of sides of the polygon
What does the number 2 mean in MgCl2?
The number 2 means that there are 2 chlorine atoms attached to one magnesium atom in a molecule of magnesium chloride
