Verify the identity.sin 
= cos x
What will be an ideal response?
sin 
= sin x cos 
+ sin 
cos x = (sin x)(0) + (1)(cos x) = cos x.
Mathematics
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Solve by isolating the absolute value and using the absolute value property.
+ 2 = 9
A. {
, - 
}
B. {- 
, 
}
C. ?
D. {
, - 
}
Mathematics
Write the percent as a decimal.5.1%
A. 51.0 B. 5.1 C. 0.51 D. 0.051
Mathematics
Use inequality notation to describe the set. q is at least 6 but less than 22
What will be an ideal response?
Mathematics
Solve the problem.The pH of a chemical solution is given by the formula pH = -log10[H+] where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if the [H+] = 4.7 × 10-12.
A. 12.33 B. 11.67 C. 11.33 D. 12.67
Mathematics