R_36=68 what is the value of r?

Multiply: (5t - 4) (4t + 5) What is the product? 20t2 + 9t - 20 20t2 + 18t - 19 20t2 + 25t - 36 20t2 + 41t - 20

Pick the description of the line x + 3y=1? It vertical or horizontal?

A mountain climber is at 29035ft above sea level. a stone at the bottom of the dead sea is at 1349 ft below sea level what is the difference in elevation between the mountain climber and the stone

A candy store is making candy packages for amusement parks. Each package contains 7 boxes. Each box contains a 5 pound bag of chocolate and 2 bags of cotton candy sugar. The bags of cotton candy sugar are all identical.

The sum of Lisa's age and John's is 49. Lisa is one more than twice as old as John. What are their ages?

Last year there were 15 porcelain dolls in Lanny's collection, after trading for a rare doll, she now has 12 dolls. What is the percent decrease of her collection?

How do you know if a number can be divided by 10 evenly?

Ahmad rented a movie. He started the movie at : 1135 AM and it ended at : 225 PM. How long was the movie?

The length and width of a rectanlge are in the ratio 5:3. The perimeter of the rectanlge is 32 cm. What is the length and width?

Volume is an unreliable measurement because A. there's no standard size of measuring cup or spoon. B. solids can't be measured accurately by volume. C. food expands or contracts in different temperatures. D. gas weighs less than liquid.