How do i write 7 37/40 as a decimal?

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

What is the value of the expression below? (81^2)^1/8

The box plot shows the number of raisins found in sample boxes from brand c and from brand d. each box weighs the same. what could you infer by comparing the range of the data for each brand? a) a box of raisins from either brand has about 28 raisins. b) the number of raisins in boxes from brand c varies more than boxes from brand d. c) the number of raisins in boxes from brand d varies more than boxes from brand c. d) the number of raisins in boxes from either brand varies about the same.