Given the values of x and y, find an equation of variation in which y varies directly as x.y = 230, when x = 90
A. x = 140y
B. x = 2.56y
C. y = 2.56x
D. y = 0.39x
Answer: C
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Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 6x2y; 0 ? x ? 4, 0 ? y ? 3
A. 676 B. 2256 C. 1256 D. 576
Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. If a problem asks you to make a prediction or generalization, the “Look for a Pattern” strategy may be appropriate. 2. If a problem asks “in how many ways” the “Look for a Pattern” strategy may be appropriate. 3. The fourth term in the sequence 3, 5, 7, . . . must be 9. 4. If a large cube is made up of 64 smaller cubes, then it has 16 cubes showing on each face of the larger cube. 5. Patterns in data may be easier to see if we arrange the data in tables.
Insert <, >, or = between the pair of numbers to form a true statement.0.688 _____ 0.687
A. = B. < C. >
Solve the equation.16x = 1
A. {1}
B. {
}
C. {0}
D. ?