Solve the equation by completing the square.x2 + 4x - 21 = 0
A. {-7, 3}
B. {-7, -14}
C. {- 
, 
}
D. {-3, 7}
Answer: A
Mathematics
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Use both properties of equality to solve the equation.-v - 24 = 15
A. 39 B. 9 C. -9 D. -39
Mathematics
Solve the problem.Ellen wishes to mix candy worth $1.23 per pound with candy worth $3.41 per pound to form 26 pounds of a mixture worth $2.49 per pound. How many pounds of the more expensive candy should she use?
A. 13 pounds B. 20 pounds C. 15 pounds D. 11 pounds
Mathematics
Find an equivalent equation in rectangular coordinates.r = 
A. 6y + 5x = 
B. 6x - 5y = 4
C. 6y + 5x = 2
D. 6x + 5y = 2
Mathematics
Find the value of x that satisfies the equation.
+ x = 10
A. x = 
B. x = 
C. x = 
D. x = 19
Mathematics