Asked in Math and Arithmetic, Algebra, Calculus
How do you solve an inequality with a negative coefficient?
The easiest way is to "flip" the inequality symbol end divide by the negative number: Example: 6 < 3 - 3s 6 - 3 < 3 - 3s -3 3 < -3s Method a) Divide by negative coefficient and flip the inequality symbol 3/-3 > -3s/-3 -1 > s or s< -1 3 < -3s Method b) Full algorithm, eliminate -3s by adding 3s on both sides 3 +3s < -3s + 3s 3 + 3s < 0 3 - 3 + 3s < 0 -3 3s < -3 3s/3...
Asked in Math and Arithmetic
Mike is three times as old as his little sister.Mary In 4 years.he will be twice as old as Mary How old is Mike?
M = 3s and (M+4) = 2 (s+4) Substitute the first equation in the second one. (3s+4) = 2 (s+4) 3s + 4 = 2s + 8 3s = 2s + 4 s = 4 M = 3s = 12 ...
What is the maximum number of electrons that can go into 3s orbital?
The max. number of electrons that can fill the 3s orbital is 2.