Write the augmented matrix for the system. 2x + 9y = 43 4y = 12
A. 
B. 
C. 
D. 
Answer: C
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Find the value of the constant k so that the given function in a probability density function for a random variable over the specified interval. f(x) = 
over [1, 18]
A. ln 18
B. 
C. 
D. 1 - ln 18
Find the limit.
ln (z
)
A. ln 2
B. ln 4
C. ln 
D. 0
Solve the problem.The time T in seconds for a pendulum of length L feet to make one swing is given by 
How long is a pendulum (to nearest hundredth) if it makes one swing in 1.4 seconds? Use 3.14 for ?.
A. 13.73 ft B. 86.24 ft C. 21.56 ft D. 2.19 ft
Solve the problem.A projectile is fired upward from the ground with an initial velocity of 400 feet per second. Neglecting air resistance, the height of the projectile at any time t can be described by the polynomial function P(t) = -16t2 + 400t. Find the height of the projectile at t = 9 seconds.
A. 3456 ft B. 2404 ft C. 2304 ft D. 3600 ft