Riley wants to buy a set of 3 pencils for 50 cents in her pocket she has 2 quarters 2 dimes and 10 nickels determine all the possible combinations to add up 50 cents

Shannon mary and john earn a weekly allowance ahannon earns the amount that is 2/3 of what john earns mary earns an amount that is 1 2/3 of what johns earns 20 dollars a week who eaens the greatest allowance and who earns the least

Y=x+2 4x+3y= -36 system of equation

If m eab = 195 and m ec = 75, what is the measure of edc?