Solve the system of equations.49x2 + 4y2 = 196y - x = 7
A. 
, (2, 9)
B. 
, (7, 0)
C. 
, (3, 10)
D. 
, (0, 7)
Answer: D
Mathematics
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Find the simplified form for f(x) and list all restrictions on the domain.f(x) = 
- 
A. f(x) = 10, x ? 2
B. f(x) = 
, x ? -2, 2
C. f(x) = 0, x ? -2, 0
D. f(x) = 
, x ? -2, 2
Mathematics
The two figures are congruent. Find the measure of the requested side or angle.The length of 
A. 
= 5
B. 
= 10
C. 
= 17.5
D. 
= 12.5
Mathematics
Find the exact value of the expression without using a calculator.sin 
cos 
+ cos 
sin 
A. 
B. 
C. 
D. 1
Mathematics
Solve.The inmedance Z in an alternating current circuit (like the one used in your home and in your classroom) is given by the formula Z = 
, where V is the voltage and I is the current. Find the value of Z if 
and 
A. 
+ 3i
B. -3 + 
i
C. 3 - 
i
D. - 
- 3i
Mathematics