| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
Solve 4 + (2 + 3) ÷ 3 x 3 - 22
| \(\frac{2}{3}\) | |
| \(\frac{2}{9}\) | |
| 1 | |
| 5 |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
4 + (2 + 3) ÷ 3 x 3 - 22
P: 4 + (5) ÷ 3 x 3 - 22
E: 4 + 5 ÷ 3 x 3 - 4
MD: 4 + \( \frac{5}{3} \) x 3 - 4
MD: 4 + \( \frac{15}{3} \) - 4
AS: \( \frac{12}{3} \) + \( \frac{15}{3} \) - 4
AS: \( \frac{27}{3} \) - 4
AS: \( \frac{27 - 12}{3} \)
\( \frac{15}{3} \)
5
What is a2 + 8a2?
| 9a4 | |
| 9a-4 | |
| 9a2 | |
| -7a2 |
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:
1a2 + 8a2
(1 + 8)a2
9a2
What is the next number in this sequence: 1, 3, 7, 13, 21, __________ ?
| 31 | |
| 25 | |
| 30 | |
| 27 |
The equation for this sequence is:
an = an-1 + 2(n - 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 + 2(6 - 1)
a6 = 21 + 2(5)
a6 = 31
Which of the following is not an integer?
0 |
|
1 |
|
-1 |
|
\({1 \over 2}\) |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
What is the next number in this sequence: 1, 3, 5, 7, 9, __________ ?
| 5 | |
| 19 | |
| 7 | |
| 11 |
The equation for this sequence is:
an = an-1 + 2
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 + 2
a6 = 9 + 2
a6 = 11