The lengths of the sides of a triangle are in the ratios 2:6:7 The length of the longest side of the triangle is 24.5 cm.
Work out the perimeter of the triangle.

Aliter of water contains about 3.35 x 10^25 molecules. a certain river discharges about 2.9x 10^8 l of water every second. about how many molecules does the river discharge every minute? write your answer in scientific notation

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.

Asingle die is rolled twice. find the probability of rolling a 3 the first time and a 2 the second time