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tamaranim1 [39]
3 years ago
14

recycling one metric ton of corrugated cardboard will sAVE ABOUT 17 TREES. a WAREHOUSE RECYCLED 14,327 KILOGRAMS OF CORRUGATED C

ARDBOARD OVER THE LAST YEAR. hOW MANY TREES DID THIS SAVE.
Mathematics
2 answers:
melomori [17]3 years ago
8 0

Answer:

243 trees were saved.

Step-by-step explanation:

Recycling one metric ton (1000 kg) of corrugated cardboard will save number of trees = 17

Warehouse recycled 14327 kg of cardboard last year. So we have to find the number of trees saved.

To find the number of trees we will use the unitary method.

∵ Recycling 1000 kg of cardboard number of trees saved = 17

∴ Recycling 1 kg cardboard number of trees saved = \frac{17}{1000}

∴ 14327 kg cardboard will save the number of trees = \frac{17}{1000}\times 14327

= 243.559

≈ 243 trees

Therefore, 243 trees were saved.

slega [8]3 years ago
3 0
1 kg = 0.001 metric tons..so 14327 kg = (14327 * 0.001) = 14.327 metric tons
and if 1 metric tons saves 17 trees....then 14.327 tons saves : 14.327 * 17 = 243.559 saved trees...and since u cant have 0.559 trees, u would round to 243 trees
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y=mx+b\\y=x-2

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<em />x-2=-\frac{5}{2}x+5<em />

<em>Multiply whole equation by 2 to get rid of the fractional 2.</em>

<em />2x-(2)(2)=-\frac{5}{2}(2)(x)+5(2)\\ 2x-4=-5x+10\\2x-4+5x-10=0\\7x-14=0\\7x=14\\x=2<em />

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tensa zangetsu [6.8K]
<h3>Answer:  n+15</h3>

=======================================================

Explanation:

  • n = number of minutes
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To find out how much more company X charges, we subtract the two cost expressions

CompanyX - CompanyY = (3n+30)-(2n+15) = 3n+30-2n-15 = n+15 which is the final answer.

--------------

An example:

Let's say you talk on the phone for n = 20 minutes.

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The difference of which is 90-55 = 35 cents.

If you plugged n = 20 into the n+15 expression we got, then n+15 = 20+15 = 35 matches up with the previous 35 cents.

This example helps confirm the answer. I'll let you try out other examples.

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