Use a calculator to verify the value found by using the double-angle formulas.Find cos 298° directly and by using functions of 149°.
A. -0.8999
B. -1.7144
C. 0.4695
D. -0.8572
Answer: C
Mathematics
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Solve the problem.In a chemistry class, 3 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 0.5 L B. 1.5 L C. 2.5 L D. 3 L
Mathematics
Solve the equation.2433x + 2 = 272x
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.In your own words, describe the procedure for adding any two rational expressions.
What will be an ideal response?
Mathematics
Factor.5x6 - 45x5 - 90x4
A. 5x4(x2 - 5x - 18) B. 5x4(x - 6)(x - 3) C. 5x3(x2 - 5x - 18) D. 5x4(x - 6)(x + 3)
Mathematics