Mathematics, 26.06.2020 15:01, martinez6221

Michiko claims that to solve the system of linear equations 15 x + 8 y = 1 and 21 x + 4 y = negative 13, instead of multiplying the second equation by –2 and then adding the equations, she could multiply the second equation by 2 and then subtract the second equation from the first equation. Which statement is correct?\

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:30, Moneyman587

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Answers: 3

continue

Mathematics, 21.06.2019 20:30, cld3331

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Answers: 1

continue

Mathematics, 21.06.2019 20:30, ghlin96

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

Answers: 3

continue

Mathematics, 21.06.2019 23:00, janeou17xn

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.

Answers: 1

continue

Do you know the correct answer?

Michiko claims that to solve the system of linear equations 15 x + 8 y = 1 and 21 x + 4 y = negative...