Perform the indicated operations and simplify.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Find the flux of the curl of field F through the shell S.F = (3y + 3)i - 2xj + (ez - 3)k; S: r(r, ?) = 5 sin ? cos ?i + 5 sin ? sin ?j + 5 cos ?k, 0 ? ? ? 2? and 0 ? ? ? 
A. 250 B. 125? C. -125? D. -250?
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Use the multiplication property of equality to solve the equation.
= -11
A. 55 B. -55 C. 16 D. -16
Mathematics
Multiply mentally.8 × 70 × 10
A. 6300 B. 4900 C. 5600 D. 780
Mathematics
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Mathematics