Please answer Will mark brainiest

a = 8cm

Step-by-step explanation:

13 + 8 + 7 + 9 + 3 = 40

40 divided by 5 = 8

the 5 comes from how many numbers they're are

mean = adding up the numbers and dividing it by how many numbers they're are

pls mark as branliest

btw = I'm sorry if I didn't answer the 2nd question

[(7*120)+(8*124)+(13*128)+(9*132)+(3*136)]/40 = 127 3/10 cm ≅ 130

another way (120+140)/2=260/2=130

because The estimate is the average of the smallest possible value and the largest possible  and not the real number.(you can right different explanation)

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following