Well it depends if you are an old schoool european or an old school american. Group 5B in Europe was the vanadium family so the answer would be Niobium, Nb in period 5.
Group 5B in America was the nitrogen family so the answer would be antimony, Sb, in period 5.
This confusion why there is an international convention that renumbered the groups, however it hasn't been universally adopted.
One example of an element that belongs to both group 5B (Group 15) and period 5 of the periodic table is antimony (Sb). Antimony has 5 valence electrons, placing it in group 5B, and it is in period 5, indicating the energy level of its electron shells.
That element would be carbon.
The B in 5B EPR is the members performance rating. A scale of 1 to 5 is used and a 5 is the highest a member can earn.
-3-5b/7 = -4 Multiply all terms by 7: -21-5b = -28 Add 21 to both sides: -5b = -7 Divide both sides by -5 remembering that a -/- becomes a + Solution: y = 7/5 = 1.4
5b + 5b = 2 x 5b
-5b - 6 = -11, first add 6 to both sides --> -5b -6 + 6 = -11 + 6 --> -5b = -5Then divide both sides by (-5): b = 1. Last substitute your answer into the original equation to make sure it check out:-5*(1) - 6 = -11 --> -5 -6 = -11
Not sure how the problem is set up as I see a space between the minus sign and the 12 but not between the minus and the 2. But, using the numbers as written: To solve for b, you must form an equation (-5b -12 -2 = 0). Next you must separate the known numbers from the unknown by adding the sum of the knowns to both sides of the equation (-5b = 14). Then divide both sides of the equation by -5 to find the value of b (b = -2.8). No no no no no. It is -5b-14 because the -5b has no relation to the others so it stays as it is and then -12-2=-14 thus getting -5b-12-2=-5b-14. Cool.
-5b = 55 To get b by itself, divide both sides by -5. (-5b)/(-5) = (55)/(-5) -5 / -5 = 1, 55 / -5 = -11 1(b) = -11 b = -11
The GCF is 5b.
3
2a+5b isn't possible the answer is still 2a+5b.
To solve for b, you must form an equation (-5b -12 -2 = 0). Next you must separate the known numbers from the unknown by adding the sum of the knowns to both sides of the equation (-5b = 14). Then divide both sides of the equation by -5 to find the value of b (b = -2.8).