Solve the problem.Mara can type 2565 words in 
hour (45 minutes). How many words per minute can she type?
A. 43 words/minute
B. 1924 words/minute
C. 76 words/minute
D. 57 words/minute
Answer: D
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r2 = 46r cos ? - 6r sin ? - 9
A. 46x - 6y = 9 B. (x - 23)2 + (y + 3)2 = 529 C. (x + 46)2 + (y - 6)2 = 9 D. (x - 23)2 + (y + 3)2 = 9
Mathematics
Solve the problem.Find the volume V of a sphere of diameter 7 cm. Use 3.14 for ?. If necessary, round the result to the nearest tenth.
A. V = 101 cm3 B. V = 1436 cm3 C. V = 179.5 cm3 D. V = 51.3 cm3
Mathematics
Use identities to find the exact value of the expression.tan 25° cot 25°
A. 1 B. -1 C. 25 D. 0
Mathematics
Solve the equation by making an appropriate substitution.x4 - 20x2 - 125 = 0
A. {- 
, 
, -5i, 5i}
B. {5, i
}
C. {-25, 5}
D. {-5, 5, -i
, i
}
Mathematics