FURTHER MATHEMATICS Use determinants to solve the systems of equation: 2x + y + 2z = 13
X + y - 2z = 8
X + 2y + z = 11

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

What are the excluded values? m+5/mn+3m