Perform the indicated operation and reduce your answer if possible.
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Find the indicated cardinal number.Find n(G), given that n(D × G) = 20 and D = {7, 8, 9, 10}.
A. 4 B. 24 C. 9 D. 5
Provide an appropriate response.Suppose you want to solve the following problem. A teacher can grade 7 essays in 2 hours. At this rate, how many essays will she be able to grade in 5 hours? Which of the following proportions will give the correct answer?
A. (i) only B. (i) and (iv) C. (ii) and (iv) D. (iii) only
Determine whether the given relationship defines a function. If so, identify the independent and dependent variable, and why the relationship is a function.The temperature t on a backyard thermometer at 5 pm on a given day x.
A. No B. Yes; x, t; there is one temperature t on any given day x at 5 pm.
Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.A chemist needs 100 milliliters of a 41% solution but has only 33% and 53% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 60 ml of 33%; 40 ml of 53% B. 70 ml of 33%; 30 ml of 53% C. 30 ml of 33%; 70 ml of 53% D. 40 ml of 33%; 60 ml of 53%