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Questions and Answers
What is the sum of the interior angles of a triangle?
What is the sum of the interior angles of a triangle?
- 270°
- 360°
- 180° (correct)
- 540°
If a bakery sells 250 loaves of bread per day, how many loaves will it sell in 5 days?
If a bakery sells 250 loaves of bread per day, how many loaves will it sell in 5 days?
- 1000 loaves
- 2500 loaves
- 1250 loaves (correct)
- 500 loaves
What is the value of x in the equation 2x + 5 = 11?
What is the value of x in the equation 2x + 5 = 11?
- 2
- 3 (correct)
- 5
- 4
If a book costs $15, and a 10% discount is applied, how much will the book cost after the discount?
If a book costs $15, and a 10% discount is applied, how much will the book cost after the discount?
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What is the perimeter of a rectangle with a length of 6 cm and a width of 4 cm?
What is the perimeter of a rectangle with a length of 6 cm and a width of 4 cm?
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Study Notes
Geometry
- The sum of the interior angles of a triangle is 180 degrees.
Real-World Applications
- If a bakery sells 250 loaves of bread per day, it will sell 250 x 5 = 1250 loaves in 5 days.
Algebra
- To solve the equation 2x + 5 = 11, subtract 5 from both sides to get 2x = 6, then divide both sides by 2 to get x = 3.
Discounts
- If a book costs $15, and a 10% discount is applied, the discount is $15 x 0.10 = $1.50, so the book will cost $15 - $1.50 = $13.50 after the discount.
Geometry
- The perimeter of a rectangle with a length of 6 cm and a width of 4 cm is 2(l + w) = 2(6 + 4) = 2 x 10 = 20 cm.
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