| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
If a = 1 and z = -4, what is the value of 8a(a - z)?
| 44 | |
| -60 | |
| 40 | |
| 315 |
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.)
8a(a - z)
8(1)(1 + 4)
8(1)(5)
(8)(5)
40
Order the following types of angle from least number of degrees to most number of degrees.
acute, right, obtuse |
|
right, obtuse, acute |
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right, acute, obtuse |
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acute, obtuse, right |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
A cylinder with a radius (r) and a height (h) has a surface area of:
4π r2 |
|
π r2h |
|
π r2h2 |
|
2(π r2) + 2π rh |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
First |
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Inside |
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Last |
|
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.
Simplify (8a)(7ab) - (2a2)(6b).
| -44ab2 | |
| 120a2b | |
| 68ab2 | |
| 44a2b |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(8a)(7ab) - (2a2)(6b)
(8 x 7)(a x a x b) - (2 x 6)(a2 x b)
(56)(a1+1 x b) - (12)(a2b)
56a2b - 12a2b
44a2b