| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.52 |
| Score | 0% | 70% |
What is 7a + 2a?
| 9a | |
| 9a2 | |
| 5 | |
| 9 |
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.
7a + 2a = 9a
Solve for y:
4y + 4 = 7 - 6y
| 1\(\frac{1}{8}\) | |
| -\(\frac{1}{5}\) | |
| \(\frac{7}{9}\) | |
| \(\frac{3}{10}\) |
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.
4y + 4 = 7 - 6y
4y = 7 - 6y - 4
4y + 6y = 7 - 4
10y = 3
y = \( \frac{3}{10} \)
y = \(\frac{3}{10}\)
A quadrilateral is a shape with __________ sides.
5 |
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3 |
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4 |
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2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
What is 9a7 - 6a7?
| 3a7 | |
| 3 | |
| 15a14 | |
| 3a14 |
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 - 6a7 = 3a7
Solve for x:
-8x + 5 = \( \frac{x}{6} \)
| \(\frac{42}{53}\) | |
| 1\(\frac{5}{22}\) | |
| -1\(\frac{23}{49}\) | |
| \(\frac{30}{49}\) |
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.
-8x + 5 = \( \frac{x}{6} \)
6 x (-8x + 5) = x
(6 x -8x) + (6 x 5) = x
-48x + 30 = x
-48x + 30 - x = 0
-48x - x = -30
-49x = -30
x = \( \frac{-30}{-49} \)
x = \(\frac{30}{49}\)