Factor, if possible.10y2 + 45y - 25
A. 5(2y + 1)(y - 5)
B. 5(2y - 1)(y + 5)
C. (2y - 1)(5y + 25)
D. (10y - 5)(y + 5)
Answer: B
Mathematics
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Find the indicted product and simplify if possible.The amount of material required to make a spherical shell is given by 
(R - r)(R2 + Rr + r2).
A. 
R3 + 
R2r + 
Rr2 + 
r3
B. 
R3 - 
R2r + 
Rr2 - 
r3
C. 
R3 - 
r3
D. 
R3 - r3
Mathematics
Solve the quadratic equation using the quadratic formula.64x2 + 48x = - 9
A. 
B. 
C. 
D. 
Mathematics
Write the fraction as a decimal. If necessary, use repeating decimal notation.
A. 0.423 B. 0.434 C. 0.424 D. 0.324
Mathematics
Tell whether the expression is a polynomial. If it is, give its degree.5?
A. polynomial, degree 0 B. polynomial, degree 5 C. polynomial, degree 1 D. not a polynomial
Mathematics