Estimate the sum or difference by first rounding each value to the indicated place value.-503.64 -(- 51.72)
round each to the nearest ten
A. 450
B. -440
C. 440
D. -450
Answer: D
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Solve.It is suspected that an incorrect resistor was put into a circuit. The correct resistor should be 
A voltage measurement is taken and found to be 
The current is measured to be 
Is the resistor correct?
A. Yes B. No
Find the work done by F over the curve in the direction of increasing t.F = 
i + j + 6k; C: r(t) = t2i + t7j + tk, 0 ? t ? 1
A. W = ln
+ 13
B. W = ln
+ 
C. W = ln
D. W = ln
+ 
Write the percentage as a fraction or decimal, as indicated.Write as a decimal.46%
A. 0.35 B. 4.6 C. 0.046 D. 0.46
Solve the problem. Round your answer to 2 decimal places when necessary.In a given year, the population of a certain country is about 159 million. The overall birth rate is 15.8 births per 1000. The overall death rate is 10.8 deaths per 1000. If the population of the country increased by 1.04 million, what is the approximate net immigration to the country during this year?
A. 2 million B. 24,500 C. 245,000 D. 2613 million