3 years ago

Daniel guesses that he scored a 95 on his science test. His actual score is 91.

1 answer:

8 0

Percent error = (estimate - real number)/(real number) * 100

percent error = (95 - 91)/(91) * 100 = 4.3956%

Answer: 4.4%

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3 years ago

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3 years ago

A container holds 9 red markers, 13 blue markers, and 17 green markers. You will randomly select two markers without replacement

IRISSAK [1]

Answer:

R-------8/38--------RR

R------9/39--------B-------13/38-------RB

G------17/38--------RG

R-------9/38--------BR

B--------13/39------B-------12/38-------BB

G-------17/38-------BG

R-----9/38--------GR

G---------17/39-------B------13/38-------GB

G------16/38-------GG

b).

9 ways
ways you can select 1 blue are; RB,BR,BG,GB

RB=9/39 × 13/38=3/38

BR= 13/39 × 9/38 =3/38

BG= 13/39 × 17/38=17/114

GB= 17/39 × 13/38=17/114

=3/38 +3/38+17/114+ 17/114 =26/57

Probability of selecting 2 red markers= RR = 9/39 × 8/38 =12/247

Probability of selecting a green marker and then a red marker= GR= 17/39×9/38 =51/494

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4 years ago