Perform the operation and write the result in the standard form.(5 - 3i) + (2 + 7i)
A. 7 + 4i
B. -7 - 4i
C. -7 + 4i
D. 7 - 4i
Answer: A
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Write the sentence as an equation. Use x to represent "a number."Nine times the sum of a number and -45 is 27.
A. 9[x + (-45)] = 27 B. 9 + x + (-45) = 27 C. 9x + (-45) = 27 D. x + 9(-45) = 27
Find a rectangular equation for the plane curve defined by the parametric equations.x = sin t, y = 3 cos t
A. x2 + 9y2 = 9 B. 9x2 + y2 = 9 C. 9x2 + y2 = 1 D. x2 + 9y2 = 1
A riverboat theater offers bus tours to groups on the following basis. Hiring the bus costs the group $360, to be shared equally by the group members. Theater tickets, normally $30 each, are discounted by 25 cents times the number of people in the group. How many members must be in the group so that the cost of the theater tour (bus fare plus theater ticket) is less than $39 per person? ? At least __________ members
Fill in the blank(s) with the appropriate word(s).
Solve the problem.In a certain location, the highest temperature recorded was 101°F. The lowest temperature recorded was 138 degrees less than the highest. What was the lowest temperature?
A. -138°F B. -37°F C. 37°F D. 0°F