Solve the system of linear equations using the elimination method.

A. (2, 6, 9)
B. (4, 9, -2)
C. (-2, 9, 4)
D. (2, 9, 6)


Answer: D

Mathematics

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Solve the equation. +  = 4

A. - 2-8
B. , 8
C. 2, 8
D. -8

Mathematics

Factor when possible. If the polynomial is prime, so state.36x2 - 25y2

A. (6x - 5y)2 B. (6x + 5y)2 C. (6x + 5y)(6x - 5y) D. prime

Mathematics

Solve the problem.A projectile is fired from a height of 8.4 feet with an initial velocity of 174 ft/sec at an angle of 53° with the horizontal. The parametric equations for the path of the projectile are x = (174 cos 53°)t, and y = 8.4 + (174 sin 53°)t - 16t2,where x and y are in feet and t is in seconds. Determine the maximum height reached by the projectile. Round your answer to the nearest tenth of a foot.

A. 310.1 ft B. 318.5 ft C. 611.9 ft D. 301.7 ft

Mathematics

Translate to an equation and solve.409.2 is what percent of 44?

A. 44 = n% × 409.2; n = 10.75% B. 409.2 = n% × 44; n = 930% C. 409.2 = n% × 44; n = 1.08% D. 44 = n × 409.2%; n = 9.3%

Mathematics