Determine whether the number is prime, composite, or neither.223
A. composite
B. neither
C. prime
Answer: C
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Solve the problem.The resistance R produced by wiring resistors of R1 and R2 ohms in parallel can be calculated from the formula 
If R1 and R2 are measured to be 9 ohms and 7 ohms respectively and if these measurements are accurate to within 0.05 ohms, estimate the maximum possible error in computing R.
A. 0.015 B. 0.025 C. 0.030 D. 0.020
Let x represent the number. Use the given conditions to write an equation. Solve the equation and find the number.The sum of four times a number and 4 is equal to the difference of twice the number and 8. Find the number.
A. 4x + 4 = 2x - 8; 6 B. 4x + 4 = 2x + 8; 2 C. 4x + 4 = 2x - 8; - 6 D. 4(x + 4) = 2x - 8; - 12
Find the component form of the indicated vector.Let u = 
. Find 6u.
A. 
B. 
C. 
D. 
Subtract and simplify. Write the answer as a mixed number as needed.12
- 12
A. 1
B. 24
C. 
D. 