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scZoUnD [109]
4 years ago
12

A college student earned $246, $288, $234, and $276 over a four-week period. how much must he earn during the fifth week to have

average earnings of $255 for the five weeks?
Mathematics
2 answers:
VashaNatasha [74]4 years ago
7 0
We calculate average by adding up all the data and dividing it by the total number of entries.

Start off by first making an equation like so:

\frac{246+288+234+276+X}{5} = 255, where X = the earnings for the fifth week.

Now multiply both sides by the denominator (5) to get this:

246+288+234+276+X = 1,275

Add up all the known earnings so far:

1,044 + X = 1,275

Subtract the total earnings so far from both sides:

X = 231

Answer: 231

anastassius [24]4 years ago
6 0
Total=255*5=1275
fifth week earning=1275-(246+288+234+276)
               =231
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aliina [53]

Answer: The second proof table is the the proper proof table.

We always start out with what we are given, which in this case is r || s saying that r is parallel to s. Also, we always end up with what we want to prove which is angles b and h are supplementary. So this is the last line of the proof.

So far, this eliminates the first proof table because in this table, the last line says "angle c and angle h are supplementary" which is not what we want to end up with. We want the last line to say "angle b and angle h are supplementary".

We can also eliminate the third proof table because of the statement "angle d and angle h are supplementary". They are only supplementary if they are both right angles. Also, the reasoning of "alternate interior angles" is false as they are corresponding angles.

The only thing left is the second proof table which is correctly argued from start to finish.

1. r || s ........................ given

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4. angle e = angle h ................. vertical angles

5. b and h are supplementary ...... substitution

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3 years ago
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timama [110]

Answer:$590

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Se puede representar "un número" con x.

x

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x + 13

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