| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.49 |
| Score | 0% | 70% |
This diagram represents two parallel lines with a transversal. If w° = 32, what is the value of x°?
| 141 | |
| 149 | |
| 148 | |
| 15 |
For parallel lines with a transversal, the following relationships apply:
Applying these relationships starting with w° = 32, the value of x° is 148.
Simplify (6a)(5ab) + (9a2)(7b).
| -33a2b | |
| 93a2b | |
| 93ab2 | |
| 33ab2 |
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.
(6a)(5ab) + (9a2)(7b)
(6 x 5)(a x a x b) + (9 x 7)(a2 x b)
(30)(a1+1 x b) + (63)(a2b)
30a2b + 63a2b
93a2b
A cylinder with a radius (r) and a height (h) has a surface area of:
π r2h2 |
|
2(π r2) + 2π rh |
|
π r2h |
|
4π r2 |
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.
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
exponents |
|
pairs |
|
division |
|
addition |
When solving an equation with two variables, 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.)
If side a = 6, side b = 4, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{85} \) | |
| \( \sqrt{162} \) | |
| \( \sqrt{52} \) | |
| \( \sqrt{74} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 62 + 42
c2 = 36 + 16
c2 = 52
c = \( \sqrt{52} \)