Solve the quadratic equation by completing the square.x2 - 4x = 21
A. {-18, -3}
B. {±
}
C. {-3, 7}
D. {-7, 3}
Answer: C
Mathematics
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Determine the x- and y-intercepts on the graph of the equation.y = -11(x - 1) + 2
A. x-intercept is - 
; y-intercept is -13
B. x-intercept is - 
; y-intercept is 13
C. x-intercept is 
; y-intercept is 13
D. x-intercept is 
; y-intercept is 9
Mathematics
Convert as indicated. If necessary, round to two decimal places.66 kilograms to pounds
A. 29.7 lb B. 167.64 lb C. 145.2 lb D. 69.96 lb
Mathematics
Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.70 L = 
gal
A. 18.2 gal B. 16.5 gal C. 31.5 gal D. 74.2 gal
Mathematics
Find the indicated vector.Let u = 
, v = 
. Find u - v.
A. 
B. 
C. 
D. 
Mathematics