| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.50 |
| Score | 0% | 70% |
What is (x2)5?
| 5x2 | |
| x-3 | |
| x10 | |
| 2x5 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(x2)5If a mayor is elected with 81% of the votes cast and 42% of a town's 22,000 voters cast a vote, how many votes did the mayor receive?
| 7,484 | |
| 8,039 | |
| 6,376 | |
| 5,729 |
If 42% of the town's 22,000 voters cast ballots the number of votes cast is:
(\( \frac{42}{100} \)) x 22,000 = \( \frac{924,000}{100} \) = 9,240
The mayor got 81% of the votes cast which is:
(\( \frac{81}{100} \)) x 9,240 = \( \frac{748,440}{100} \) = 7,484 votes.
4! = ?
3 x 2 x 1 |
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5 x 4 x 3 x 2 x 1 |
|
4 x 3 |
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4 x 3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
a(b + c) = ab + ac defines which of the following?
distributive property for multiplication |
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distributive property for division |
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commutative property for division |
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commutative property for multiplication |
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.
Convert 1,100,000 to scientific notation.
| 1.1 x 10-5 | |
| 1.1 x 105 | |
| 1.1 x 106 | |
| 1.1 x 10-6 |
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:
1,100,000 in scientific notation is 1.1 x 106