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weeeeeb [17]
3 years ago
5

Four friends are told that the average (mean) of their grades for their favorite class is 83.75%.

Mathematics
2 answers:
taurus [48]3 years ago
8 0

Answer:

80

Step-by-step explanation:

The sum of the 4 grades equals 4 times the average

94 + 78 + 83 + T = 4 * 83.75

94 + 78 + 83 + T = 335

255 + T = 335

Subtract 255 from both sides

T = 80

MrMuchimi3 years ago
6 0

Answer:

Tyler got 80%.

Step-by-step explanation:

Represent Tyler's average by t.

Then .94 + .78 + .83 + t

         -------------------------- = 83.75%

                         4

Multiplying both sides by 4, we get  2.55 + t = 3.35

                                                                       

so that t = 3.35 - 2.55 = 0.80

Tyler got 80%.

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Answer:

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Step-by-step explanation:

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7 0
3 years ago
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fredd [130]

To solve this problem, we must use the order of operations outlined by PEMDAS, which tells us that we should simplify or compute parentheses first, then exponents, multiplication, division, addition, and finally subtraction.

Using this method, we have to perform the multiplication inside the parentheses first.

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3 years ago
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Step-by-step explanation:

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3 years ago
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stiv31 [10]

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Step-by-step explanation:

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JulsSmile [24]

Answer:

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Step-by-step explanation:

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