Solve the system by substitution. x + 6y = 182x + 6y = 12
A. ?
B. {(-5, 3)}
C. {(-6, 4)}
D. {(-5, -6)}
Answer: C
Mathematics
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The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 = 4y
A. r sin2 ? = 4 cos ? B. r cos2 ? = 4 sin ? C. 4 sin2 ? = r cos ? D. 4 cos2 ? = r sin ?
Mathematics
Write a signed number for the statement.The team gave up 6 points
A. -6 points B. 6 points
Mathematics
Solve.Stevie bought a stereo for $250 and put it on sale at his store at a 55% markup rate. What was the retail price of the stereo?
A. $350.00 B. $387.50 C. $287.50 D. $500.00
Mathematics