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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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3 years ago
A jacket cost $35.50 more than a pair of tennis shoes if the total cost of both items is $161.30 find the cost of each
Mice21 [21]

Answer:

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Step-by-step explanation:

Let the cost of tennis shoe be x

Since a jacket cost $35.50 more than a pair of tennis shoe,

Then cost of jacket would be

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Total cost of both items would be;

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3 years ago
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mihalych1998 [28]

Answer:

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Last option

Step-by-step explanation:

Step 1: Write out expression

2p - 7p² - 5p + 6p²

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Step 3: Combine like terms (p)

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Step 4: Rewrite

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3 years ago
Anyone know the area??
Diano4ka-milaya [45]
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Hope this helps! :)
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Step-by-step explanation:

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