Solve the problem.Consider an economy with only two industries: A and B. Suppose industry B needs 15 cents worth of A's product for each 1 dollar of output B produces and that industry A needs 24 cents worth of B's product for each 1 dollar of output A produces. Consumer demand for A's product is 1300 dollars and for B's product is 750 dollars. Write an augmented matrix for this economy.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the indicated vector.Let u = 
, v = 
. Find 
u + 
v.
A. 
B. 
C. 
D. 
Mathematics
Use the formula for Sn to find the sum for the geometric sequence.3, -9, 27, -81, 243
A. 183 B. 363 C. -363 D. -183
Mathematics
Solve the problem using Snell's Law: 
= 
.A light beam in air travels at 2.99 × 108 meters per second. If its angle of incidence to a second medium is 85° and its angle of refraction in the second medium is 75°, what is its speed in the second medium (to two decimal places)?
A. 3.08 × 108 mps B. 2.89 × 108 mps C. 2.90 × 108 mps D. 2.98 × 108 mps
Mathematics
Solve for the missing number.
= 
A. 4
B. 
C. 
D. 2
Mathematics