Solve the system by the substitution method.
A. (7, 3), (3, 7), (21, 1), (1, 21)
B. (7, 3), (3, 7)
C. (7, 3), (-7, -3), (3, 7), (-3, -7)
D. (7, 3), (-7, -3)
Answer: C
Mathematics
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Find the measure of the angles.
?A = (10x + 66)°, ?B = (5x + 111)°
A. 156° and 156° B. 24° and 24° C. -66° and -66° D. 24° and 156°
Mathematics
Use the product rule and positive exponents to simplify the expression.3a7 ? 4a-3
A. 12a10 B. 12a4 C. 12a21 D. 7a4
Mathematics
Express the function as a sinusoid of the form y = a sin (bx + c).y = 5 sin (5x) + 3 cos (5x)
A. y = 
sin 
B. y = 
sin 
C. y = 
sin 
D. y = 
sin 
Mathematics
Provide an appropriate response.For the polynomial 6x2 + 7x + 6, 2 is not a common factor. Explain why the binomial 2x - 3, then, cannot be a factor of the polynomial.
What will be an ideal response?
Mathematics