Rationalize the denominator in the expression:
a. 7
b. 7
c. 7
d. 7
d. 7
Mathematics
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Find the probability.A bag contains 10 marbles of which 9 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red?
A. 
B. 
C. 
D. 
Mathematics
Find the inverse of the function.f(x) = -5 - 3x
A. f-1(x) = - 
+ 
B. f-1(x) = - 
- 
C. f-1(x) = -2 - x
D. f-1(x) = 
- 
Mathematics
Graph the equation.25x2 - 4y2 = 100
A. 
B. 
C. 
D. 
Mathematics
Find 
.
?
?
A. 
?
B. 
?
C. 
?
D. 
?
E. 
?
Mathematics