| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
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Solve for y:
7y + 7 > 8 - 2y
| y > 1 | |
| y > -\(\frac{2}{9}\) | |
| y > \(\frac{1}{9}\) | |
| y > -\(\frac{1}{3}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
7y + 7 > 8 - 2y
7y > 8 - 2y - 7
7y + 2y > 8 - 7
9y > 1
y > \( \frac{1}{9} \)
y > \(\frac{1}{9}\)
On this circle, line segment AB is the:
chord |
|
diameter |
|
circumference |
|
radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
On this circle, line segment CD is the:
circumference |
|
radius |
|
chord |
|
diameter |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
addition |
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exponents |
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pairs |
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division |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Simplify (y + 4)(y + 7)
| y2 + 3y - 28 | |
| y2 + 11y + 28 | |
| y2 - 11y + 28 | |
| y2 - 3y - 28 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 4)(y + 7)
(y x y) + (y x 7) + (4 x y) + (4 x 7)
y2 + 7y + 4y + 28
y2 + 11y + 28