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Mathematics Clinic => Grade 11 and 12 Mathematics => Topic started by: mrsjacobs44 on Jun 7, 2019

Title: Solve for x and y: 7x + 3y = 42 4x + 6y = 36
Post by: mrsjacobs44 on Jun 7, 2019

Question 1

A couple is about the get married. They decide to start a joint bank account to save for a house. They want to have an initial investment of $9000. The first partner contributes $350 more than three-quarters what the second partner contributes. How much does each partner contribute?
◦ P1 = 5057.14, P2 = 3942.86
◦ P1 = 5857.14, P2 = 3992.86
◦ P1 = 4557.14, P2 = 4442.86
◦ P1 = 4057.14, P2 = 4942.86
◦ P1 = 3557.14, P2 = 5452.86

Question 2

Solve for x and y:

7x + 3y = 42

4x + 6y = 36
◦ x = 4.8, y = 2.8
◦ x = 4.8, y = -2.8
◦ x = -4.8, y = 2.8
◦ x = 4.8, y = -5.6
◦ x = -4.8, y = -2.8

Title: Solve for x and y: 7x + 3y = 42 4x + 6y = 36
Post by: Mochi on Jun 7, 2019

Answer 1

P1 = 4057.14, P2 = 4942.86

Answer 2

x = 4.8, y = 2.8