Solving for Specified Variables in Formulas

This video tutorial covers solving for specified variables in various mathematical and scientific formulas. It begins with solving for b1 in the area of a trapezoid, followed by using Ohm's Law to find current. The tutorial then addresses solving for height in a rectangular prism's surface area, radius in circle and sphere formulas, and resistance in parallel circuits. It also includes solving for current in electromotive force equations and b in random equations. Finally, it covers solving for x in geometric mean and t1 in working together problems.

What is the first step to isolate b1 in the trapezoid area formula?

• Add b2 to both sides

• Multiply both sides by 2

• Divide both sides by h

• Subtract b2 from both sides

Tags

CCSS.HSA.REI.B.3

In Ohm's Law, how do you solve for the current (i)?

• Multiply both sides by r

• Divide both sides by v

• Divide both sides by r

• Subtract r from both sides

Tags

CCSS.HSA.CED.A.4

How do you isolate h in the surface area formula of a rectangular prism?

• Add 2lw to both sides

• Factor out h from the terms

• Subtract 2wh from both sides

• Multiply both sides by 2w

Tags

CCSS.8.EE.A.2

What operation is needed to solve for r in the area of a circle formula?

• Subtract pi from both sides

• Multiply both sides by pi

• Take the square root of both sides

• Square both sides

Tags

CCSS.8.EE.A.2

To solve for r in the volume of a sphere formula, what is the final step?

• Subtract 4/3 from both sides

• Divide both sides by pi

• Multiply both sides by 4/3

• Take the cube root of both sides

Tags

CCSS.HSA.CED.A.4

How do you begin solving for r1 in the parallel resistance formula?

• Multiply each term by the common denominator

• Divide both sides by r2

• Subtract rt from both sides

• Add r2 to both sides

Tags

CCSS.HSA.CED.A.4

In the electromotive force equation, how do you solve for the current (i)?

• Subtract little r from both sides

• Multiply both sides by r

• Factor out i from the terms

• Add r to both sides

Tags

CCSS.HSA.CED.A.4

What is the first step to solve for b in the equation a = r/(b-c)?

• Subtract a from both sides

• Multiply both sides by b

• Cross-multiply to eliminate the fraction

• Add c to both sides

Tags

CCSS.8.EE.A.2

How do you solve for x in the geometric mean equation?

• Square both sides

• Take the square root of both sides

• Multiply both sides by y

• Divide both sides by y

Tags

CCSS.8.EE.C.7B

In the working together problem, what is the first step to solve for t1?

• Add t2 to both sides

• Cross-multiply to eliminate the fraction

• Subtract t from both sides

• Multiply both sides by t

Tags

CCSS.8.EE.C.7B