Write the equation in the standard form ax2 + bx + c = 0. Then identify the values of a, b, and c. Do not actually solve the equation.9x2 + 10x - 7 = 0
A. a = 9, b = 10, c = 7
B. a = 9, b = -10, c = -7
C. a = 9, b = 10, c = -7
D. a = 9, b = -10, c = 7
Answer: C
Mathematics
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Perform the indicated operation. Write the answer in the form a + bi.7(cos 45° + i sin 45°) ? 2(cos 90° + i sin 90°)
A. 2
- 
i
B. -14
- 14
i
C. -7
+ 7
i
D. 7
- 28
i
Mathematics
Use the table of integrals to find the integral.
?
?
Use C as the constant of integration.
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Mathematics
Verify the identity.tan 
= -cot x
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Mathematics
Let a and b be the lengths of the legs of a right triangle, and let c be the length of the hypotenuse. Values of two of the three lengths are given. Find the third length.a = 6, b = 15
A. c = 87
B. c = 3
C. c = 63
D. c = 3
Mathematics