Kolya bought 3 oranges that costed a dollars each, and 4 bananas that costed b dollars each. How much more he spent on oranges than on bananas?

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

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