| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
What is the next number in this sequence: 1, 10, 19, 28, 37, __________ ?
| 46 | |
| 38 | |
| 40 | |
| 49 |
The equation for this sequence is:
an = an-1 + 9
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 + 9
a6 = 37 + 9
a6 = 46
Monica scored 87% on her final exam. If each question was worth 4 points and there were 280 possible points on the exam, how many questions did Monica answer correctly?
| 49 | |
| 61 | |
| 55 | |
| 73 |
Monica scored 87% on the test meaning she earned 87% of the possible points on the test. There were 280 possible points on the test so she earned 280 x 0.87 = 244 points. Each question is worth 4 points so she got \( \frac{244}{4} \) = 61 questions right.
Convert 6,858,000 to scientific notation.
| 68.58 x 105 | |
| 6.858 x 106 | |
| 6.858 x 10-6 | |
| 6.858 x 105 |
A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:
6,858,000 in scientific notation is 6.858 x 106
The __________ is the greatest factor that divides two integers.
greatest common multiple |
|
absolute value |
|
least common multiple |
|
greatest common factor |
The greatest common factor (GCF) is the greatest factor that divides two integers.
What is 6y2 + 7y2?
| -y2 | |
| -y-2 | |
| 13y-4 | |
| 13y2 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
6y2 + 7y2
(6 + 7)y2
13y2