Your Results | Global Average | |
---|---|---|
Questions | 5 | 5 |
Correct | 0 | 3.58 |
Score | 0% | 72% |
Which of the following statements about math operations is incorrect?
you can multiply monomials that have different variables and different exponents |
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all of these statements are correct |
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you can add monomials that have the same variable and the same exponent |
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you can subtract monomials that have the same variable and the same exponent |
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.
If c = 1 and y = 7, what is the value of 9c(c - y)?
55 | |
-54 | |
-8 | |
144 |
To solve this equation, 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.)
9c(c - y)
9(1)(1 - 7)
9(1)(-6)
(9)(-6)
-54
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
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First |
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Last |
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Odd |
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.
This diagram represents two parallel lines with a transversal. If c° = 10, what is the value of z°?
30 | |
23 | |
149 | |
10 |
For parallel lines with a transversal, the following relationships apply:
Applying these relationships starting with c° = 10, the value of z° is 10.
If the base of this triangle is 1 and the height is 2, what is the area?
44 | |
1 | |
32 | |
40 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 1 x 2 = \( \frac{2}{2} \) = 1