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Questions and Answers
What is the value of x in the equation 2x + 5 = 11?
What is the value of x in the equation 2x + 5 = 11?
- 4
- 3 (correct)
- 5
- 2
What is the slope-intercept form of a linear equation?
What is the slope-intercept form of a linear equation?
- x = b + my
- y = mx + b (correct)
- x = my + b
- y = b + mx
What is the formula to find the area of a circle?
What is the formula to find the area of a circle?
- A = 2πr
- A = πr^2 (correct)
- A = πd
- A = 2πd
What is the sum of the interior angles of a triangle?
What is the sum of the interior angles of a triangle?
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What is the formula to find the perimeter of a rectangle?
What is the formula to find the perimeter of a rectangle?
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Study Notes
Equations and Graphs
- To find the value of x in the equation 2x + 5 = 11, subtract 5 from both sides and then divide both sides by 2, resulting in x = 3.
Linear Equations
- The slope-intercept form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept.
Circle Formulas
- The formula to find the area of a circle is A = πr^2, where A is the area and r is the radius of the circle.
Triangles
- The sum of the interior angles of a triangle is 180°.
Rectangle Formulas
- The formula to find the perimeter of a rectangle is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width.
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