480
m x n
25
Where m and n are statements m n is called the _____ of m and n.
There are infinitely many numbers whose difference is 18 . Every number,say n, differs by 18 from n+ 18 and n -18.
If ( mn = 161 ), then ( m = \frac{161}{n} ). Without knowing the value of ( n ), it is not possible to determine the value of ( mm ).
Let the number be 'm' & 'n' Hence mn = 88 m + n = 18 m = 18 - n Substitute (18 - n)n = 88 18n - n^2 = 88 n^2 - 18n + 88 = 0 This does not readily factor so apply the Quadratic Eq'n. n = { --18 +/-sqrt[(-18)^2- 4(1)(88)]} 2(1) n = { 18 +/- sqrt[324 -352]} / 2 n = { 18 +/-sqrt[-28]} / 2 This is unresolved as you cannot take the 'square root; of a negative number.
let the number be 'm' & 'n' m + n = 17 m - n = 1 Add 2m = 18 m - 18 / 2 = 9 Substituting 9 - n = 1 9 - 1 = n n = 8 So the two numbers are '8' & '9'.
480
18
The surface area of cube M is 6(10 mm)2 = 6(100 mm2) = 600 mm2 The surface area of cube N would be 6(20 mm)2 = 6(400 mm2) = 2,400 mm2
Three in m and two in n
m x n
25
None if n > m n! if n = m and mPn = m!/(m-n)! where k! denotes 1*2*...*k
90Nm (newton metres)
Sodium bicarbonate is the chemical term for baking soda.