| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
If AD = 23 and BD = 18, AB = ?
| 11 | |
| 12 | |
| 18 | |
| 5 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDOn this circle, a line segment connecting point A to point D is called:
circumference |
|
diameter |
|
chord |
|
radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
Simplify 5a x 6b.
| 30\( \frac{b}{a} \) | |
| 30\( \frac{a}{b} \) | |
| 30a2b2 | |
| 30ab |
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.
5a x 6b = (5 x 6) (a x b) = 30ab
If side x = 11cm, side y = 15cm, and side z = 8cm what is the perimeter of this triangle?
| 25cm | |
| 34cm | |
| 28cm | |
| 38cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 11cm + 15cm + 8cm = 34cm
Simplify (3a)(8ab) + (2a2)(2b).
| 44a2b | |
| -20ab2 | |
| 28a2b | |
| 28ab2 |
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.
(3a)(8ab) + (2a2)(2b)
(3 x 8)(a x a x b) + (2 x 2)(a2 x b)
(24)(a1+1 x b) + (4)(a2b)
24a2b + 4a2b
28a2b