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zaharov [31]
3 years ago
9

Please answer Will mark brainiest

Mathematics
2 answers:
ivanzaharov [21]3 years ago
8 0

Answer:

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

AleksandrR [38]3 years ago
4 0

Answer:

[(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)

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