← SetsMathematics — Set 9
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Mathematics Practice Questions — Set 9
10 free Mathematics reviewer questions with answers and explanations. Pindutin ang sagot mo para makita agad kung tama — kasama na ang paliwanag. Set 9 of 9.
81
A 6-foot-tall man casts a 4-foot-long shadow. At the same time, a nearby flagpole casts a 20-foot-long shadow. How tall is the flagpole?
82
Given that sin(x) = (5)⁄(13) and x is an angle in Quadrant II, what is the value of tan(x)?
83
Simplify the expression: fracsin²(theta) + cos²(theta)tan(theta)
84
The average (arithmetic mean) of 10 numbers is 25. If the number 58 is added to the set, what is the new average?
85
The set of 5 numbers {2, 5, x, 8, 10} is in increasing order. If the median of the set is 6, what is the mean?
86
A box contains 5 red balls, 3 green balls, and 2 blue balls. What is the probability of drawing two green balls in a row, without replacement?
87
The probability that person A passes an exam is 0.5. The probability that person B passes is 0.4. What is the probability that at least one of them passes?
88
Machine A can complete a job in 3 hours. Machine B can complete the same job in 5 hours. If they work together, how long will it take them to complete the job?
89
A's salary is 20% more than B's salary. By what percent is B's salary less than A's salary?
90