Mathematics, 10.06.2020 20:57 katyym80
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The scouts sold small and large boxes of cookies as a fund raiser. One scout sold 7 small boxes and 12 large boxes for $54.00. Another scout sold 5 small boxes and 10 large boxes for $60.00. The scout leader wrote a system of equations to represent the their sales.
7 x + 12 y = 54. 5 x + 10 y = 60.
Which constants can each equation be multiplied by so that one variable is eliminated when the equations are added? Check all that apply.
1. The first equation can be multiplied by 5 and the second equation by β6 to eliminate the y.
2. The first equation can be multiplied by β5 and the second equation by 6 to eliminate the y.
3. The first equation can be multiplied by β5 and the second equation by 7 to eliminate the x.
4. The first equation can be multiplied by 5 and the second equation by β7 to eliminate the x.
5. The first equation can be multiplied by β5 and the second equation by 10 to eliminate the x.
Answers: 2
Mathematics, 21.06.2019 18:30
An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3
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Mathematics, 21.06.2019 21:00
Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
Answers: 2
Mathematics, 21.06.2019 21:40
Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is
Answers: 1
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