The first step in the problem-solving procedure is not choosing a variable, but rather translating the main idea into symbols.
?
If you subtract fifteen from twice a number, the result is three. What is the number?
?

A. 9
B. -6
C. 6
D. -9
E. -13.5


Answer: A

Mathematics

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Find the flux of the curl of field F through the shell S.F = x4i + 7xj + 5k; S is the upper hemisphere of x2 + y2 + z2 = 4

A. 28? B. ? C. 4? D. 4

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Graph the equation by plotting points. Use values of ? that are multiples of 30°.r = -6 sin ?

A.

B.

C.

D.

Mathematics

Solve the inequality, and graph the solution set. < x

A. (-?, 3) ? (7, ?)

B. (3, 7)

C. (0, 3) ? (7, ?)

D. (7, ?)

Mathematics

Multiply the polynomials. Express the answer as a single polynomial in standard form.(10y + x)(10y - x)

A. 100y2 + 20xy - x2 B. 100y2 - x2 C. 20y2 - x2 D. 100y2 - 20xy - x2

Mathematics