The formula for the area of a trapezoid is A=1/2h(b1+b2) were h is the height of the trapezoid, and b1 and b2 are the base lengths of the trapezoid. Which formula can be used to find the length of b1?

A=1/2h(b1+b2)

2A = hb1 + hb2
2A - hb2 = hb1
b1 = (2A - hb2)/h

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676

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no you is dumb

To find the length of b1, we can rearrange the formula for the area of a trapezoid. The formula is A=1/2h(b1+b2). We want to isolate b1 on one side of the equation.

Steps to find the length of b1:

1. Start with the formula for the area of a trapezoid: A=1/2h(b1+b2).
2. Multiply both sides of the equation by 2 to get rid of the 1/2: 2A = h(b1+b2).
3. Divide both sides of the equation by h to isolate the term (b1+b2): 2A/h = b1+b2.
4. Subtract b2 from both sides of the equation to isolate b1: 2A/h - b2 = b1.

Therefore, the formula to find the length of b1 is:

b1 = 2A/h - b2