Imagine that you have a bag containing 10 marbles of different colors. you have drawn a marble, recorded its color and replaced it fifty times with the following results: 9 purple, 16 orange, 6, yellow and 19 green marbles, make a prediction for how many marbles of each color are in the bag.

Place the following steps in order to complete the square and solve the quadratic equation,

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

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