| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.65 |
| Score | 0% | 53% |
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Last |
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Odd |
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First |
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Inside |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.
Find the value of a:
-3a + x = 9
-7a - 7x = -6
| -1\(\frac{1}{5}\) | |
| -2\(\frac{1}{28}\) | |
| 3 | |
| 1\(\frac{1}{8}\) |
You need to find the value of a so solve the first equation in terms of x:
-3a + x = 9
x = 9 + 3a
then substitute the result (9 - -3a) into the second equation:
-7a - 7(9 + 3a) = -6
-7a + (-7 x 9) + (-7 x 3a) = -6
-7a - 63 - 21a = -6
-7a - 21a = -6 + 63
-28a = 57
a = \( \frac{57}{-28} \)
a = -2\(\frac{1}{28}\)
If a = c = 4, b = d = 7, and the blue angle = 59°, what is the area of this parallelogram?
| 28 | |
| 4 | |
| 9 | |
| 35 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 4 x 7
a = 28
For this diagram, the Pythagorean theorem states that b2 = ?
c2 - a2 |
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a2 - c2 |
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c - a |
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c2 + a2 |
The Pythagorean theorem defines the relationship between the side lengths of a right triangle. The length of the hypotenuse squared (c2) is equal to the sum of the two perpendicular sides squared (a2 + b2): c2 = a2 + b2 or, solved for c, \(c = \sqrt{a + b}\)
The formula for the area of a circle is which of the following?
c = π d2 |
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c = π r2 |
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c = π d |
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c = π r |
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.