Kayla wants to find the width ab of a river she walks along the edge of the river 90 fr and marks point c then she walks 72 ft further and marked point d she turns 90 degrees and walks until her location point a and point c are collinear she marks point e st location as shown

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

What is the value of r of the geometric series?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?