| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
What is \( \sqrt{\frac{49}{9}} \)?
| 2\(\frac{1}{3}\) | |
| 1 | |
| 1\(\frac{1}{2}\) | |
| \(\frac{4}{7}\) |
To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:
\( \sqrt{\frac{49}{9}} \)
\( \frac{\sqrt{49}}{\sqrt{9}} \)
\( \frac{\sqrt{7^2}}{\sqrt{3^2}} \)
\( \frac{7}{3} \)
2\(\frac{1}{3}\)
A circular logo is enlarged to fit the lid of a jar. The new diameter is 55% larger than the original. By what percentage has the area of the logo increased?
| 30% | |
| 27\(\frac{1}{2}\)% | |
| 35% | |
| 20% |
The area of a circle is given by the formula A = πr2 where r is the radius of the circle. The radius of a circle is its diameter divided by two so A = π(\( \frac{d}{2} \))2. If the diameter of the logo increases by 55% the radius (and, consequently, the total area) increases by \( \frac{55\text{%}}{2} \) = 27\(\frac{1}{2}\)%
What is the next number in this sequence: 1, 5, 13, 25, 41, __________ ?
| 59 | |
| 67 | |
| 54 | |
| 61 |
The equation for this sequence is:
an = an-1 + 4(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 + 4(6 - 1)
a6 = 41 + 4(5)
a6 = 61
Convert c-2 to remove the negative exponent.
| \( \frac{1}{c^2} \) | |
| \( \frac{-1}{-2c^{2}} \) | |
| \( \frac{-2}{c} \) | |
| \( \frac{2}{c} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
Damon loaned Damon $1,500 at an annual interest rate of 3%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $88 | |
| $45 | |
| $28 | |
| $42 |
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 $1,500
i = 0.03 x $1,500
i = $45