help!! literal formulas?

0 ⤊

help!! literal formulas?

A=1/2 (b1+b2)h solve for b2

2006-10-23 13:51:22 · 2 answers · asked by Night visions 6 in Science & Mathematics ➔ Mathematics

2 answers

A=1/2b1(h)+1/2b2(h)
A-1/2b1h=1/2b2h
(A-1/2b1h)/1/2h=b2
opps I didn't simplify:
(A/1/2h) - (1/2b1h/1/2h) = b2
2A/h - b1 = b2

2006-10-23 13:53:59 · answer #1 · answered by Ford Prefect 7 · 0⤊ 0⤋

A=1/2 (b1+b2)h

2A=(b1+b2)h {multiply both sides by 2}
2A = hb1 + hb2 {distribute the h}
2A - hb1 = hb2 { subtract hb1 from both sides}
(2A - hb1)/h = b2 {divide both sides by h

b2 = (2A - hb1)/h

2006-10-23 20:56:09 · answer #2 · answered by kindricko 7 · 0⤊ 0⤋