Math multiplication problem, it's been a long while need assistance to solving this 4/5 x 1 3/8 =

George is 187 cm tall. his son, ralph, is 142 cm tall. who casts the longer shadow. george when the sun is 65° above the horizon, or ralph when the sun is 56° above the horizon? how much longer? (nearest centimeter)

What expression is equivalent to 42x-56y

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?