What quantity of a 40% acid solution must be mixed with a 10% solution to produce 300 mL of a 30% solution?
What will be an ideal response?
200mL
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Use this graph to answer the question.
MonthWhich month in 2009 had the highest sales?
A. Month 5 B. Month 9 C. Month 12 D. Month 2
Determine the amplitude, range, and period of the function and sketch its graph.y = sin (x + ?)
A. amplitude: 1; range: [2, 4]; period: 2?
B. amplitude: 1; range: [-1, 1]; period: 2
C. amplitude: 1; range: [-1, 1]; period: 2?
D. amplitude: 1; range: [-1, 1]; period: 2?
Solve the problem.The cost of manufacturing a molded part is related to the quantity produced during a production run. When 100 parts are produced, the cost is $300. When 400 parts are produced, the cost is $2700. What is the marginal cost of the function?
A. $9.00 per part B. $0.13 per part C. $8.00 per part D. $6.00 per part
A 25-ft ladder leaning against a wall begins to slide. How fast is the top of the ladder sliding down the wall at the instant of time when the bottom of the ladder is 15 ft from the wall and sliding away from the wall at the rate of 6 ft/sec?
?
Hint: Refer to the accompanying figure. By the Pythagorean theorem, 
. Find 
when 
and 
.
?
?
a = 25; b = 6
?
What will be an ideal response?