Find the cross product and determine whether the proportion is true or false.
= 
A. 60 = 60; true
B. 120 = 120; true
C. 30 ? 120; false
D. 18 ? 200; false
Answer: A
You might also like to view...
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
Give all possible rational zeros for the following polynomial.P(x) = 2x3 - 5x2 + 7x - 19
A. ±1, ±2, ±19, ± 
B. ±1, ±19, ± 
, ± 
C. ±1, ± 
, ±2, ± 
D. ±1, ±2, ±19
Solve the logarithmic equation.log7x = -2
A. 
B. 49
C. 128
D. 
Use graphing calculator to find the inverse of the matrix. Give 5 decimal places.A = 
A. 
B. 
C. 
D. 