Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
The length of the critical path for the entire project is
A. 37 hours.
B. 18 hours.
C. 15 hours.
D. 30 hours.
E. none of these
Answer: B
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Solve the problem.At lift-off, a rocket weighs 40.2 tons, including the weight of fuel. It is fired vertically, and the fuel is consumed at the rate of 2.23 tons per 1,000 ft of ascent. How much work is done in lifting the rocket to an altitude of 10,000 ft?
A. 3.28 x 105 ft?ton B. 2.91 x 105 ft?ton C. 3.46 x 105 ft?ton D. 5.14 x 105 ft?ton
A force of 30 N is required to maintain a spring stretched from its natural length of 12 cm to a length of 15 cm. How much work is done in stretching the spring from 12 cm to 26 cm?
a. 10.80J b. 14.00J c. 12.00J d. 9.80J e. 13.00J
Simplify the expression by combining like terms, if possible.-(4x - 4z + 7)
A. -4x - 4z + 7 B. -4x + 4z + 7 C. -4x - 4z - 7 D. -4x + 4z - 7
Write the logarithmic equation in exponential form.log 10,000,000 = 7
A. 107 = 10,000,000
B. 107 = 
C. 107 = 100,000,000
D. 107 = 7