| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
What is -8y4 - 5y4?
| -13y4 | |
| -3y4 | |
| 13y-4 | |
| -3y16 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:
-8y4 - 5y4
(-8 - 5)y4
-13y4
What is \( \frac{-5b^9}{7b^4} \)?
| -\(\frac{5}{7}\)b2\(\frac{1}{4}\) | |
| -1\(\frac{2}{5}\)b-5 | |
| -\(\frac{5}{7}\)b5 | |
| -\(\frac{5}{7}\)b\(\frac{4}{9}\) |
To divide terms with exponents, the base of both exponents must be the same. In this case they are so divide the coefficients and subtract the exponents:
\( \frac{-5b^9}{7b^4} \)
\( \frac{-5}{7} \) b(9 - 4)
-\(\frac{5}{7}\)b5
Which of the following is not a prime number?
7 |
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2 |
|
5 |
|
9 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.
What is the next number in this sequence: 1, 2, 3, 4, 5, __________ ?
| 6 | |
| 5 | |
| 10 | |
| 12 |
The equation for this sequence is:
an = an-1 + 1
where n is the term's order in the sequence, an is the value of the term, and an-1 is the value of the term before an. This makes the next number:
a6 = a5 + 1
a6 = 5 + 1
a6 = 6
A factor is a positive __________ that divides evenly into a given number.
improper fraction |
|
integer |
|
mixed number |
|
fraction |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.