Solve.The side of a square equals the length of a rectangle. The width of the rectangle is 4 meters longer than its length. The sum of the areas of the square and the rectangle is 126 square centimeters. Find the side of the square.
A. 2 cm
B. 49 cm
C. 7 cm
D. 9 cm
Answer: C
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Solve the problem.Jamil always throws loose change into a pencil holder on his desk and takes it out every two weeks. This time it is all nickels and dimes. There are 4 times as many dimes as nickels, and the value of the dimes is $3.15 more than the value of the nickels. How many nickels and dimes does Jamil have?
A. 36 nickels and 9 dimes B. 8 nickels and 32 dimes C. 10 nickels and 40 dimes D. 9 nickels and 36 dimes
In order to determine how American undergraduate college students feel about eliminating spring break in order to finish spring term a week early, a survey was conducted. Two hundred undergraduate students from the University of Miami (FL) were interviewed. Both of the interviewers hired to conduct the survey were told to interview 25 freshmen, 25 sophomores, 25 juniors, and 25 seniors. Of the 200 students interviewed, 20% were in favor of the elimination of spring break, 70% were opposed, and 10% had no opinion.The sampling method used for the survey is called
A. random sampling. B. simple random sampling. C. quota sampling. D. stratified sampling. E. none of these
Use values from the compound interest table to find the compound interest. Round to the nearest cent.
$1820 at 6% compounded annually for 15 years
A. $2294.85 B. $1638.00 C. $2541.74 D. $1528.80
Write the set by listing its elements.{a|a is an integer greater than -8}
A. {-8, -7, -6, -5, ...} B. {-7, -6, -5, ...} C. {-6, -4, -2, ...} D. {-14, -12, -10, -8, ...}