Solve the problem.Since cos 
= - 
and 
is in the interval [0, ?], cos-1 - 
=
A. - 
B. 
C. 
D. 27
Answer: B
Mathematics
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Determine whether the given relationship defines a function. If so, identify the independent and dependent variable, and why the relationship is a function.The temperature t on a backyard thermometer on a given day x.
A. Yes; x, t; there is one temperature t on any given day x. B. No
Mathematics
A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given.A = ?r2 for r = 6, ? = 3.14
A. A = 9.14 B. A = 18.84 C. A = 59.16 D. A = 113.04
Mathematics
Find the sum.-21 + (+32)
A. 53 B. -11 C. -53 D. 11
Mathematics
Change the fraction to a decimal. Round as indicated.
one decimal places
A. 2.0 B. 0.1 C. 0.2 D. 0.4
Mathematics