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irina [24]
3 years ago
9

How can you write 72+(8+19) to make it easier to add

Mathematics
2 answers:
Mashutka [201]3 years ago
8 0
72+8+19, take out the parenthesis.
You first can just do the simple, 72+8=80
So now you can just do 18+19=99
Does this help?
~Korey
max2010maxim [7]3 years ago
3 0
There's a key problem in this question compelling you to actually rewrite it like that! Mathematically that is inaccurate and incorrect. If you do 72(8+19) it seems as if you are going to do 8+19*72 as in algebra whatever is outside the bracket is bound to go multiplied so technically (8+19)+72 would make more sense and the answer is

Using bidmas do the brackets first

8+19= 27
27+72=99
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a home building contractor bought 4 2/8 acres for $165,000. What was the cost of each acre? (round to nearest dollar.)
pychu [463]

Answer: $38,824

Step-by-step explanation:

Convert the mixed number 4\ \frac{2}{8} as a decimal number.

Divide the numerator by the denominator and add it to the whole number 4. Then:

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Then, knowing that 4.25 acres cost $165,000 , divide this amount by 4.25 acres to find the cost of each acre.

Therefore, you get that the cost of each acre rounded to nearest dollar is:

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6 0
3 years ago
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Basile [38]
The equation seems to be

   1
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In that case, this is the solution, stept by step:

1) factor 25: 25 = 5^2

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3) Given that the bases are equal, the exponents also have to be equal:

=> - 2 = x + 4

3) transpose +4:

=> - 2 - 4 = x

=> x = - 6

Answer: - 6
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