Solve the problem. Round to the nearest tenth if necessary.A 22-foot ladder is leaning against a house with the base of the ladder 6 feet from the house. How high up the house does the ladder reach? If necessary, round to the nearest tenth foot.
A. 21.2 ft
B. 22.8 ft
C. 16 ft
D. 21.8 ft
Answer: A
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Find the probability.If a fair coin is tossed three times, find the probability of getting heads on the first toss and tails on the second and third tosses.
A. 
B. 
C. 
D. 
Simplify.
A. 
B. 
C. 
D. 
An open box is to be constructed from a piece of cardboard 24 cm by 35 cm by cutting squares of side length x from each corner and folding up the sides, as shown in the figure.
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(a) Express the volume V of the box as a function of x.
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__________
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(b) What is the domain of V? (Use the fact that length and volume must be positive.)
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__________ < x< __________
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(c) Draw a graph of the function V and use it to estimate the maximum volume for such a box. Please round the answer to the nearest whole number.
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__________ cm3
What will be an ideal response?
What does the circuit symbol in the figure mean?
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A. Battery B. NOR-gate C. AND-gate D. Light E. Switch