Answer:
Quantitative Variables. As discussed in the section on variables in Chapter 1, quantitative variables are variables measured on a numeric scale. Height, weight, response time, subjective rating of pain, temperature, and score on an exam are all examples of quantitative variables
A is correct
Responder:
A - B = {1, 4, 5}
Explicação passo a passo:
Conjunto A - Conjunto B; Isso significa que queremos um conjunto que contém apenas elementos que estão no conjunto A, portanto, os elementos do conjunto A que também estão presentes no conjunto B estão isentos.
A = {1, 2, 3, 4, 5}
B = {2, 3, 7}
A - B = {1, 4, 5}
Portanto, apenas] 1, 4, 5} são elementos do conjunto A e não do conjunto B
Answer: the rate of the jet in still air is 685 mph and the rate of the jetstream is 75 mph
Step-by-step explanation:
Let x represent the rate of the jet in still air.
Let y represent the rate of the jet jetstream.
Distance = speed × time
Flying against the jetstream, a jet travels 3050 miles in 5 hours. This means that the total speed of the jet would be (x - y) mph. Therefore,
3050 = 5(x - y)
3050/5 = x - y
x - y = 610 - - - - - - - - - - - - - -1
Flying with the jetstream, the same jet travels 3800 miles in 4 hours. This means that the total speed of the jet would be (x + y) mph. Therefore,
3800 = 4(x + y)
3800/5 = x + y
x + y = 760 - - - - - - - - - - - - - -2
Adding equation 1 to equation 2, it becomes
2x = 1370
x = 1370/2 = 685mph
Substituting x = 685 into equation 1, it becomes
685 - y = 610
y = 685 - 610 = 75mph
Answer:
The perfect square number between 40 and 50 is 49 which is a square of 7.
Answer:
Step-by-step explanation:
Given
Required
Simplify
Cancel out 18
Divide 4 and 2
Divide 27 and 12 by 3
Apply law of indices
Divide 2 and 4
Rewrite as:
Hence:
