3x + y = -4; 3x -4y = 6; Solve the simultaneous equations for x and y
x = -2/3y = -2
JB
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All answers ▸What is 'cotx'?
Solve 3x + 6 > 3 - 2x.
A shopkeeper compares the income from sales of a laptop in March and in April. The price in April was 1/5 more than in March. The number sold in April was 1/4 less than in March. By what fraction does income decrease from March to April?
Sarah asked 20 people at a tennis tournament how they travelled there. She found that 13 of them travelled by car. Estimate how many of the total 2000 people at the tournament travelled by car.