Working together, Sarah and Heidi can milk the cows in 4 hours. If they work alone, it takes Heidi 6 hours longer than it takes Sarah. How long would it take Heidi to milk the cows alone?
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Please enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
12
Mathematics
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Use exponential regression to provide an approximate model for the following data. t 1.23 4.94 8.67 12.01 15.48 y 4.20 15.08 68.05 260.75 1064.52?
A. ?
B. 
C. ?
D. ?
Mathematics
Evaluate the expression using the order of operations.
A. 0
B. 
C. 2
D. 
Mathematics
Compute the following. Round to the nearest hundredth.3
% of 79
A. 25.30 B. 0.03 C. 2.53 D. 253.00
Mathematics
Simplify. Assume that each variable is nonnegative.
A. 
B. 7
C. 7
D. 
Mathematics