Solve.A 16-foot ladder is leaning against a house with the base of the ladder 4 feet from the house. How high up the house does the ladder reach? Round to the nearest tenth of a foot.
A. 15.5 ft
B. 15.7 ft
C. 12 ft
D. 16.5 ft
Answer: A
Mathematics
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Indicate whether the statement is true or false.A system of two linear inequalities can have solutions in only one quadrant.
A. True B. False
Mathematics
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(9 + 9i)(3 - 4i)
A. 63 - 9i B. -36i2 - 9i + 27 C. -9 + 63i D. 63 + 9i
Mathematics
Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
- x = 6
A. -7, -3 B. -3 C. -7 D. No solution
Mathematics