| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
Solve for y:
-9y + 1 > \( \frac{y}{-5} \)
| y > \(\frac{5}{44}\) | |
| y > 1\(\frac{17}{19}\) | |
| y > -\(\frac{4}{19}\) | |
| y > -\(\frac{16}{19}\) |
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.
-9y + 1 > \( \frac{y}{-5} \)
-5 x (-9y + 1) > y
(-5 x -9y) + (-5 x 1) > y
45y - 5 > y
45y - 5 - y > 0
45y - y > 5
44y > 5
y > \( \frac{5}{44} \)
y > \(\frac{5}{44}\)
Which of the following statements about math operations is incorrect?
all of these statements are correct |
|
you can subtract monomials that have the same variable and the same exponent |
|
you can add monomials that have the same variable and the same exponent |
|
you can multiply monomials that have different variables and different exponents |
You can only add or subtract monomials that have the same variable and the same exponent. For example, 2a + 4a = 6a and 4a2 - a2 = 3a2 but 2a + 4b and 7a - 3b cannot be combined. However, you can multiply and divide monomials with unlike terms. For example, 2a x 6b = 12ab.
A coordinate grid is composed of which of the following?
y-axis |
|
all of these |
|
x-axis |
|
origin |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
Simplify (y + 7)(y + 6)
| y2 - y - 42 | |
| y2 + 13y + 42 | |
| y2 + y - 42 | |
| y2 - 13y + 42 |
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 + 7)(y + 6)
(y x y) + (y x 6) + (7 x y) + (7 x 6)
y2 + 6y + 7y + 42
y2 + 13y + 42
A quadrilateral is a shape with __________ sides.
4 |
|
2 |
|
5 |
|
3 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.