Solving for x in Complementary and Supplementary Angles

The video tutorial covers complementary and supplementary angles, explaining that complementary angles add up to 90 degrees and supplementary angles add up to 180 degrees. It provides mnemonic devices to remember these concepts and demonstrates how to solve equations involving these angles. The tutorial includes practice problems for viewers to solve on their own, with solutions provided for verification.

What is the total degree measure that complementary angles sum up to?

• 360 degrees

• 45 degrees

• 90 degrees

• 180 degrees

Tags

CCSS.7.G.B.5

How can you remember that complementary angles add up to 90 degrees?

• By finding a hidden 'C' in the number 180

• By finding a hidden 'C' in the number 90

• By remembering the shape of the angles

• By memorizing the formula

Tags

CCSS.7.G.B.5

What is the first step in solving a two-step equation?

• Divide by the coefficient

• Multiply by the coefficient

• Square both sides

• Add or subtract on both sides

Tags

CCSS.7.EE.B.4A

What is the coefficient in the equation 2x = 60?

• 30

• 2

• x

• 60

Tags

CCSS.6.EE.A.2B

How do you solve the equation 2x + 30 = 90 for x?

• x = 45

• x = 60

• x = 15

• x = 30

Tags

CCSS.7.EE.B.4A

What do supplementary angles sum up to?

• 90 degrees

• 360 degrees

• 180 degrees

• 270 degrees

Tags

CCSS.7.G.B.5

What is the opposite operation of adding 50 in an equation?

• Subtracting 50

• Dividing by 50

• Multiplying by 50

• Adding 50

Tags

CCSS.2.MD.B.5

After subtracting 50 from both sides of the equation 4x + 50 = 180, what is the next step?

• Multiply both sides by 4

• Divide both sides by 4

• Subtract 4 from both sides

• Add 4 to both sides

Tags

CCSS.7.EE.B.4A

What is the value of x when solving the equation 4x + 50 = 180?

• 30

• 37

• 45

• 32.5

Tags

CCSS.8.G.A.5

What is the value of x in the first supplementary angle practice problem?

• 32.5

• 45

• 30

• 37

Tags

CCSS.7.G.B.5