78 books thirty one are on the shelves the rest are still pack in the boxes

how many still in the boxes

What's the answer to - 2/3 •12 3/8e

Alex and Benny had 440 cards. Alex and Cruz had 320 cards. Benny had 3 times as many cards as Cruz. How many cards did Alex have?

If you were to exttend your number line to reach from 0 to 2 there would be five fifths for every whole number lenghts

A social scientist would like to analyze the relationship between educational attainment (in years of higher education) and annual salary (in $1,000s). He collects data on 20 individuals.

Using the discriminant, fdetermine the number of real solutions. 2x^2+7x-15=0

I need to know how to prove if an angle is congruent or not.

Solve the compound inequality 4 < x - 5 < 12

How to do 1.42 g/cm² to mg/mm²

Mr carbon has 6 planks of wood that are 7 feet long and 5 planks of wood that are 8 feet long. If he places all 6 of the 7 foot planks in a line, how much longer will they be all 5 of the 8 foot planks in line

There are two boxes, one has a dimension of 6x2x3 and the other has dimension of 2x3x6. Which is bigger?