| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.67 |
| Score | 0% | 73% |
If side a = 7, side b = 2, what is the length of the hypotenuse of this right triangle?
| \( \sqrt{53} \) | |
| \( \sqrt{52} \) | |
| \( \sqrt{130} \) | |
| \( \sqrt{90} \) |
According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:
c2 = a2 + b2
c2 = 72 + 22
c2 = 49 + 4
c2 = 53
c = \( \sqrt{53} \)
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
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equal length |
|
right angle |
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equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
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exponents |
|
division |
|
addition |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If b = -1 and y = -8, what is the value of 7b(b - y)?
| 144 | |
| -49 | |
| -180 | |
| 612 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
7b(b - y)
7(-1)(-1 + 8)
7(-1)(7)
(-7)(7)
-49
The formula for the area of a circle is which of the following?
a = π r2 |
|
a = π d |
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a = π r |
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a = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.