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vampirchik [111]
4 years ago
14

1 tree makes approximately 230 newspapers. Estimate (by rounding each number to 1 S.F.) how many newspapers 56 trees will make.

Mathematics
2 answers:
g100num [7]4 years ago
6 0

Answer:

56 trees will make 10000 newspapers.

Step-by-step explanation:

Given:

One tree makes approximately 230 newspapers.

Now, for estimating how many newspapers will be made with 56 trees.

By multiplying 56 trees with 230 newspapers we get,

56\times230=12880.

And, rounding 12880 to one significant number (1 S.F.) is 10000.

Therefore, 56 trees will make 10000 newspapers.

Katena32 [7]4 years ago
3 0

Answer: The answer is 12,880 newspapers

Step-by-step explanation:

Step one : given that

1 tree produces 230 news papers

56 tree will produce X newspapers

Step: cross multiplying to get the value of x

X= 56*230

X=12,880

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Solve the system by using the technique of ‘elimination’: -2x+5y=-42,7x+2y=30
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Solve the following system using elimination:

{5 y - 2 x = -42 | (equation 1)

7 x + 2 y = 30 | (equation 2)

Swap equation 1 with equation 2:

{7 x + 2 y = 30 | (equation 1)

-(2 x) + 5 y = -42 | (equation 2)

Add 2/7 × (equation 1) to equation 2:

{7 x + 2 y = 30 | (equation 1)

0 x+(39 y)/7 = (-234)/7 | (equation 2)

Multiply equation 2 by 7/39:

{7 x + 2 y = 30 | (equation 1)

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Subtract 2 × (equation 2) from equation 1:

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Divide equation 1 by 7:

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