Find the product.(10m - 11w)(10m + 11w)
A. 10m2 - 11w2
B. 100m2 - 121w2
C. 100m2 - 220mw - 121w2
D. 100m2 + 220mw - 121w2
Answer: B
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (8 sin 2t)i - (10 cos 2t)j + (7 csc 2t)k
A. a
= 32i + 28k
B. a
= -32i + 28k
C. a
= 40j + 28k
D. a
= -32i - 28k
Solve the direct variation.Suppose x varies directly as y. If x = 4 when y = 24, what is the value of y when 
A. 81 B. 54 C. 36 D. 16
Complete the table for the radioactive isotope. Round your answer to two decimal places.
Isotope
Half-life(years)
Initial Quantity
Amount after 1000 years
5715
----
A. Amount after 1000 years: 
B. Amount after 1000 years: 
C. Amount after 1000 years: 
D. Amount after 1000 years: 
E. Amount after 1000 years: 
Factor completely. If the polynomial is prime, state this.2x10 - 14x9 + 24x8
A. 2x8(x + 3)(x - 4) B. 2x8(x - 3)(x - 4) C. x8(2x - 3)(x + 4) D. 2(x + 3)(x9 + 4)