Solve using the addition principle.1.9 = x - 9.2
A. -7.3
B. 17.48
C. -11.1
D. 11.1
Answer: D
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Parametrize the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 25 cut by the cone z = 
.
What will be an ideal response?
Solve.Sammy received a birthday check for $40.00 from his aunt. He immediately cashed the check and went on a shopping spree. In three different stores he spent $13.86, $12.53, and $6.60, respectively. How much was left of the birthday money after these purchases?
A. $32.99 B. $7.31 C. $8.01 D. $7.01
Provide an appropriate response.State whether the following angle pairs are complementary, supplementary, or neither: 90°, 
Fill in the blank(s) with the appropriate word(s).
Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y. x + 7y = 75x - 2y = -2
A. (1, 1) B. (1, 0) C. (0, 0) D. (0, 1)