Sarah weighed three containers of sand for a science project. the first container weighed 19.28 grams, the second container weighed 25.3 grams, and the third container waited 46.3 grams. how much more did the third container weighed then the first and second container combined?

Find the maximum value of p= 4x + 5y subject to the following constraints :

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?