1) Dave is 9 years older than his brother. Dave is also 9 years younger than twice
his brother's Ige. How old is each?

Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.