Set up the percent proportion for the application problem. Do not try to solve for any unknowns.A chemical is 62% pure. In 750 grams of the chemical, how much is pure?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: B
Mathematics
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Express in terms of i.
A. -2i
B. 2
C. -2
D. 2i
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. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400
Mathematics
Solve the equation.
x + 
= 
- 
x + 
A. 
B. 
C. 
D. 
Mathematics
Use the quadratic formula to solve the equation. If the equation has no real number solution, so state.4x2 + x - 1 = 0
A. x = 
B. No solution
C. x = 
D. x = 
Mathematics