| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
If the base of this triangle is 2 and the height is 4, what is the area?
| 38\(\frac{1}{2}\) | |
| 4 | |
| 52\(\frac{1}{2}\) | |
| 15 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 4 = \( \frac{8}{2} \) = 4
What is 7a7 + 9a7?
| 16a14 | |
| -2a14 | |
| 16a7 | |
| 63a7 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
7a7 + 9a7 = 16a7
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
|
triangle |
|
quadrilateral |
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rhombus |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
A cylinder with a radius (r) and a height (h) has a surface area of:
π r2h |
|
π r2h2 |
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2(π r2) + 2π rh |
|
4π r2 |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.
A(n) __________ is two expressions separated by an equal sign.
expression |
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formula |
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equation |
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problem |
An equation is two expressions separated by an equal sign. The key to solving equations is to repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.