| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.48 |
| Score | 0% | 70% |
What is \( \frac{4}{9} \) ÷ \( \frac{4}{9} \)?
| 1 | |
| 4 | |
| \(\frac{3}{40}\) | |
| 9 |
To divide fractions, invert the second fraction and then multiply:
\( \frac{4}{9} \) ÷ \( \frac{4}{9} \) = \( \frac{4}{9} \) x \( \frac{9}{4} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{4}{9} \) x \( \frac{9}{4} \) = \( \frac{4 x 9}{9 x 4} \) = \( \frac{36}{36} \) = 1
Bob loaned April $1,100 at an annual interest rate of 8%. If no payments are made, what is the total amount owed at the end of the first year?
| $1,155 | |
| $1,188 | |
| $1,144 | |
| $1,199 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $1,100
i = 0.08 x $1,100
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $1,100 + $88Convert 0.0009209 to scientific notation.
| 9.209 x 105 | |
| 9.209 x 10-5 | |
| 9.209 x 104 | |
| 9.209 x 10-4 |
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:
0.0009209 in scientific notation is 9.209 x 10-4
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for multiplication |
|
distributive property for division |
|
commutative property for multiplication |
|
commutative property for division |
The distributive property for division helps in solving expressions like \({b + c \over a}\). It specifies that the result of dividing a fraction with multiple terms in the numerator and one term in the denominator can be obtained by dividing each term individually and then totaling the results: \({b + c \over a} = {b \over a} + {c \over a}\). For example, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
What is the next number in this sequence: 1, 9, 17, 25, 33, __________ ?
| 50 | |
| 39 | |
| 41 | |
| 45 |
The equation for this sequence is:
an = an-1 + 8
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 + 8
a6 = 33 + 8
a6 = 41