Provide an appropriate response.
Use the cosine function to find A of a standard right triangle ABC given b = 32.8 ft and c = 89.3 ft. Round to the nearest 0.1°.
A. 68.5°
B. 20.2°
C. 1.0°
D. 21.5°
Answer: A
Mathematics
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.2x - 4y + 6z = -7 and -6x - 3y + 4z = -3
A. 0.608 rad B. 1.502 rad C. 0.423 rad D. 1.148 rad
Mathematics
Use grouping to factor the polynomial.5y3 - 15y2 + 2y - 6
A. (5y2 + 2)(y - 3) B. (5y2 + 2)(y + 3) C. (5y2 - 2)(y + 3) D. (5y2 - 2)(y - 3)
Mathematics
Let P(x) be the number of prime numbers less than x. Find ?P??(14). ? ?P?(14) = __________
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the system of equations. [Hint: Let u = 
and v = 
, and solve for u and v. Then let x = 
, and y = 
.]
A. x = 
, y = - 
; 
B. x = 
, y = -8; 
C. x = - 
, y = 
; 
D. x = -8, y = 
; 
Mathematics