Solve the problem.Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 105 foreign coins. Find how many coins Mary has.
A. 14 coins
B. 70 coins
C. 63 coins
D. 35 coins
Answer: B
Mathematics
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Graph the set of points whose polar coordinates satisfy the given equation or inequality.0 ? ? ? ?, r ? 3
A. 
B. 
C. 
D. 
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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.2.3 m = 
in.
A. 5.8 in. B. 2.5 in. C. 82.8 in. D. 90.6 in.
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Use grouping to factor the polynomial.z4 - 5z3 - 7z2 + 35z
A. z(z2 - 7)(z - 5) B. z(z2 - 5)(z - 7) C. (z3 - 7)(z + 5) D. z(z2 + 7)(z - 5)
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Determine the scalar c so that the vectors v and w are orthogonal or parallel as indicated.v = 
, w = 
; parallel
A. c = - 
B. c = - 70
C. c = 
D. c = 
Mathematics