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Crazy boy [7]
3 years ago
5

In a group of five students who took the same test, four of the scores were 85, 92, 81, and 95. If the average of the five stude

nts was 89, what was the score of the fifth student?
Mathematics
1 answer:
dangina [55]3 years ago
7 0

Answer:

92

Step-by-step explanation:

89 x 5 = 445

85 + 92 + 81 + 95 = 353

445 - 353 = 92

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Which graph represents 2x − 5y ≥ − 20
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Go to desmos and it will answer literally all of your graphing questions. Just type in desmos graphing calculator.

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3 years ago
Help me on this pleaseee
lisabon 2012 [21]

Answer:

Bolded below are the answers

Step-by-step explanation:

4568 ÷ 8

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8 0
2 years ago
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Factorise (2t-7)²-(5t-4)² <br>with working pls​
sertanlavr [38]

Answer:

33+12t−21t^2

Step-by-step explanation:

(2t-7)²-(5t-4)²

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4t^2−28t+49−(5t-4)²

Use binomial theorem (a−b)^2 = a^2−2ab+b^2 to expand (5t-4)².

4t^2−28t+49−(25t^2−40t+16)

To find the opposite of 25t^2

−40t+16, find the opposite of each term.

4t^2−28t+49−25t^2−40t+16

Combine 4t^2  and −25t^2  to get −21t^2.

−21t^2−28t+49+40t−16

Combine −28t and 40t to get 12t.

−21t^2+12t+49−16

Subtract 16 from 49 to get 33.

−21t^2+12t+33

Swap terms to the left side.

33+12t−21t^2

I hope this helped!

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3 years ago
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Area = 91 in²

Step-by-step explanation:

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