| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
What is 9a7 - 2a7?
| 18a7 | |
| 11 | |
| 7a7 | |
| a714 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
9a7 - 2a7 = 7a7
A(n) __________ is to a parallelogram as a square is to a rectangle.
quadrilateral |
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trapezoid |
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triangle |
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rhombus |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Solve for y:
8y - 1 = \( \frac{y}{-4} \)
| \(\frac{4}{33}\) | |
| \(\frac{6}{13}\) | |
| 3\(\frac{1}{2}\) | |
| \(\frac{18}{23}\) |
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 equal sign and the answer on the other.
8y - 1 = \( \frac{y}{-4} \)
-4 x (8y - 1) = y
(-4 x 8y) + (-4 x -1) = y
-32y + 4 = y
-32y + 4 - y = 0
-32y - y = -4
-33y = -4
y = \( \frac{-4}{-33} \)
y = \(\frac{4}{33}\)
If AD = 12 and BD = 9, AB = ?
| 20 | |
| 4 | |
| 18 | |
| 3 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDBreaking apart a quadratic expression into a pair of binomials is called:
factoring |
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squaring |
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deconstructing |
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normalizing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.