Solve the system.y =  x + 4y = 7

A.
B.
C.
D.


Answer: B

Mathematics

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Solve the problem.A bullet is fired with a muzzle velocity of 1,236 ft/sec from a gun aimed at an angle of 6° above the horizontal. Find the horizontal component of the velocity.

A. 1,187 ft/sec B. 1,229 ft/sec C. 129.2 ft/sec D. 129.9 ft/sec

Mathematics

Find the exact value of the product.cos 135° cos 45°

A. - 
B. 1
C.
D. 2

Mathematics

Use technology to calculate det A.A = 

A. 48 B. 31 C. 364 D. 4

Mathematics

Factor the expression completely.48 - 58x - 8x2

A. (8 + x)(6 - 8x) B. (8 + x)(6 + 8x) C. (8 - x)(6 - 8x) D. (8 - x)(6 + 8x)

Mathematics