| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.95 |
| Score | 0% | 59% |
If a = c = 7, b = d = 9, and the blue angle = 77°, what is the area of this parallelogram?
| 3 | |
| 42 | |
| 63 | |
| 35 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 7 x 9
a = 63
Which of the following expressions contains exactly two terms?
quadratic |
|
binomial |
|
polynomial |
|
monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
The formula for the area of a circle is which of the following?
c = π d |
|
c = π d2 |
|
c = π r |
|
c = π r2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
Solve for b:
-5b - 7 < \( \frac{b}{-5} \)
| b < 4\(\frac{1}{2}\) | |
| b < -\(\frac{15}{41}\) | |
| b < \(\frac{36}{41}\) | |
| b < -1\(\frac{11}{24}\) |
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.
-5b - 7 < \( \frac{b}{-5} \)
-5 x (-5b - 7) < b
(-5 x -5b) + (-5 x -7) < b
25b + 35 < b
25b + 35 - b < 0
25b - b < -35
24b < -35
b < \( \frac{-35}{24} \)
b < -1\(\frac{11}{24}\)
What is 5a7 - 2a7?
| a714 | |
| 3a7 | |
| 10a7 | |
| 3a14 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
5a7 - 2a7 = 3a7