Mathematics, 02.07.2019 10:00 Shathep
1. tony and his sister maria have the same birthday but tony is five years older than maria. let the variable x represent tony's age and y represent maria's age. which graph represents the relationship between tony's age and maria's age? 2. solve the equation: 3 ( x -7 ) - x = 2x - 21 a) 7 b) -2 c) infinitely many solutions d) no solution 3. which equation is an identity? a. 8-(5x+2)=-5x-6 b. 7z+10-z=8z-2(z-5) c. 8m-4=5m+8-m d. 6y+5=6y-5 4. which equation has no solution? a) 7v+2=8v-3 b) 3x-5=3x+8-x c) 4y+5=4y-6 d) 7z+6=-7z-5
Answers: 1
Mathematics, 21.06.2019 23:00
According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.
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Mathematics, 21.06.2019 23:00
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Mathematics, 21.06.2019 23:30
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