Mathematics, 18.01.2021 17:10 anonymous174
Two systems of equations are shown below: System A System B 6x + y = 2 and 2x − 3y = −10, −x − y = −3 and −x − y = −3 Which of the following statements is correct about the two systems of equations? Select one:
a. The value of x for System B will be 4 less than the value of x for System A because the coefficient of x in the first equation of System B is 4 less than the coefficient of x in the first equation of System A.
b. They will have the same solution because the first equations of both the systems have the same graph.
c. They will have the same solution because the first equation of System B is obtained by adding the first equation of System A to 4 times the second equation of System A.
d. The value of x for System A will be equal to the value of y for System B because the first equation of System B is obtained by adding −4 to the first equation of System A and the second equations are identical.
Answers: 2
Mathematics, 21.06.2019 21:40
The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?
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Mathematics, 21.06.2019 23:00
The equation shown below represents function f. f(x)= -2x+5 the graph shown below represents function g. which of the following statements is true? a. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is less than the y-intercept of function g. b. over the interval [2, 4], the average rate of change of f is greater than the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. c. over the interval [2, 4], the average rate of change of f is the same as the average rate of change of g. the y-intercept of function f is greater than the y-intercept of function g. d. over the interval [2, 4], the average rate of change of f is less than the average rate of change of g. the y-intercept of function f is the same as the y-intercept of function g.
Answers: 1
Two systems of equations are shown below: System A System B 6x + y = 2 and 2x − 3y = −10, −x − y = −...
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