How to add fractions with different denominators and negative numbers?

How many pennies does it take to make $20?

What is the expression of 175

Julissa has eight yards of fabric each blanket that she makes needs one third yarn of fabric how many blankets can she make

When you use the LCD to add or subtract rational expressions, will the answer always be in simplest form if you use the LCD? Explain

The expression 5 * (43,764-41,125) is ___ times as great as 43,764-41,125.

It is known that x=7 is a root of the equation ax^2 + bx + 2 = 0, where a<0. Solve the inequality ax²4 + bx^2 + 2>0.

Which ordered pair is a solution of the equation? X+7y=17 Answer Choices A. Only (10,1) B. Only (-4,3) C. Both (10,1) and (-4,3)

A high school play cost an up front $30,000 to produce, plus an additional cost as of $1000 for each perfromance. Every sold out performance of the of thr play brings in $2500 of revenue to the school.

A teacher is interested in performing a hypothesis test to compare the mean math score of the girls and the mean math score of the boys. She randomly selects 10 girls from the class and then randomly selects 10 boys.

Otto spent 3/4 of the money he had saved on a new video game. If the video game cost $48, how much money did he have before he bought the game?