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Alabama papas must average 80 on five test . Scores on the first four test were 81 73 84 and 76 what is the lowest score she can make on the last test and still get a b

Respuesta :

absor201

She has to score at least 86 on her fifth test.

Further explanation:

We will use the average formula to find the fifth value.

Given

[tex]Average\ required=80\\x_1=81\\x_2=73\\x_3=84\\x_4=76\\x_5=?[/tex]

We have to find x5

The formula for average is:

[tex]x=\frac{Sum\ of\ values}{Total\ number\ of\ values}\\Here,\\n=5\\So,\\x=\frac{x_1+x_2+x_3+x_4+x_5}{5}\\Putting\ values\\80=\frac{81+73+84+76+x_5}{5}[/tex]

[tex]80*5=314+x_5\\400=314+x_5\\x_5=400-314\\x_5=86[/tex]

She has to score at least 86 on her fifth test.

Keywords: Average, Word Problems

Learn more about average at:

  • brainly.com/question/9323337
  • brainly.com/question/9103248

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