Solve.-5x - y + 6z = 40-7x + 5z = 31 4y + z = 25
A. (-2, 9, 4)
B. (2, 9, 4)
C. (2, 4, 9)
D. (-2, 4, 4)
Answer: C
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Solve.Wind resistance or atmospheric drag tends to slow down moving objects. Atmospheric drag varies jointly as an object's surface area A and velocity v. If a car traveling at a speed of 40 mph with a surface area of 35 ft2 experiences a drag of 168 N (Newtons), how fast must a car with 49 ft2 of surface area travel in order to experience a drag force of 388.08 N?
A. 63 mph B. 68 mph C. 71 mph D. 66 mph
Solve the problem.The product of two consecutive integers is 29 more than their sum. Find the integers.
A. 5, 6 or -5, -4 B. 6, 7 C. 6, 7 or -5, -4 D. -5, -4
Classify the angle as acute, right, obtuse, or straight.
A. Obtuse B. Straight C. Acute D. Right
Add and write the resulting polynomial in descending order of degree.(5a4 + 7a2) + (2a4 + 2a2)
A. 16a12 B. 16a6 C. 7a4 + 9a2 D. 7a8 + 9a4