(3/10+4/10) + 6/10 use the properties and mental math to find the sum. write your answer in the simplest form.

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?