| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
Solve 2 + (3 + 3) ÷ 5 x 3 - 42
| 1\(\frac{3}{4}\) | |
| -10\(\frac{2}{5}\) | |
| \(\frac{2}{3}\) | |
| \(\frac{6}{7}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
2 + (3 + 3) ÷ 5 x 3 - 42
P: 2 + (6) ÷ 5 x 3 - 42
E: 2 + 6 ÷ 5 x 3 - 16
MD: 2 + \( \frac{6}{5} \) x 3 - 16
MD: 2 + \( \frac{18}{5} \) - 16
AS: \( \frac{10}{5} \) + \( \frac{18}{5} \) - 16
AS: \( \frac{28}{5} \) - 16
AS: \( \frac{28 - 80}{5} \)
\( \frac{-52}{5} \)
-10\(\frac{2}{5}\)
If \( \left|x - 5\right| \) - 3 = 6, which of these is a possible value for x?
| -4 | |
| 8 | |
| 2 | |
| -5 |
First, solve for \( \left|x - 5\right| \):
\( \left|x - 5\right| \) - 3 = 6
\( \left|x - 5\right| \) = 6 + 3
\( \left|x - 5\right| \) = 9
The value inside the absolute value brackets can be either positive or negative so (x - 5) must equal + 9 or -9 for \( \left|x - 5\right| \) to equal 9:
| x - 5 = 9 x = 9 + 5 x = 14 | x - 5 = -9 x = -9 + 5 x = -4 |
So, x = -4 or x = 14.
A factor is a positive __________ that divides evenly into a given number.
mixed number |
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improper fraction |
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integer |
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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.
What is the next number in this sequence: 1, 2, 3, 4, 5, __________ ?
| 6 | |
| 4 | |
| 15 | |
| 9 |
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(b + c) = ab + ac defines which of the following?
distributive property for division |
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distributive property for multiplication |
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commutative property for multiplication |
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commutative property for division |
The distributive property for multiplication helps in solving expressions like a(b + c). It specifies that the result of multiplying one number by the sum or difference of two numbers can be obtained by multiplying each number individually and then totaling the results: a(b + c) = ab + ac. For example, 4(10-5) = (4 x 10) - (4 x 5) = 40 - 20 = 20.