Solve the equation. Check your solution.
+ 
= 
- 5
A. 
B. 
C. 
D. 
Answer: B
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Solve the system by graphing on a calculator. Round to the nearest hundredth if necessary.y = e2x+32x + y = 3
A. {(-0.75, 4.5)} B. {(0.75, 4.5)} C. {(0.75, -4.5)} D. {(-0.75, -4.5)}
Find the range for the set of data given.
A. 5.2 B. 1.1 C. 1.2 D. 5.7
The IQs of students at an Elementary School were measured and found to be normally distributed with a mean of 100 and a standard deviation of 20. Round your answers to four decimal places, if necessary. ? Find the probability that a student selected at random will have an IQ of 140 or higher. ? __________ ? Find the probability that a student selected at random will have an IQ of 120 or higher. ? __________ ? Find the probability that a student selected at random will have an IQ of between 100 and 120. ? __________ ? Find the probability that a student selected at random will have an IQ of 90 or less. ? __________
What will be an ideal response?
Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.
= 
+ 
A. - 
B. 
C. 3
D. -3