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IgorLugansk [536]
3 years ago
9

If 8 men took 10hrs to build a wall how long will it take 4 men to build the same wall

Mathematics
1 answer:
xeze [42]3 years ago
7 0

Answer:

Step-by-step explanation:

20 hours because there is less men

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Does it matter what order you add the numbers in a problem? explain how chips and numbers lines support your answer.
Mrac [35]

Answer: No, it does not matter.

Step-by-step explanation:

In addition the order does not matter, this is because of the commutative property of the addition, that says that: A + B = B + A

and the associative property, that says that:

A + (B + C) = (A + B) + C

for example, if you have 4 chips and your friend gives you her 5 chips, now you have a total of 4 + 5 =  9 chips.

The case is the same if you have 5 chips and your friend gives you 4 chips, now you have 5 + 4 = 9 chips.

Other example is that:

5 chips + ( 2chips + 1 chip) = 5 chips + 3 chips = 8 chips

(5 chips + 2 chips) + 1 chip = 7 chips + 1 chip = 8 chips

You can see that the order does not matter.

4 0
4 years ago
Helppppppppppppppppp pleaseeeeeeeeeee ASAP
pogonyaev

Answer:

<em>Second number line</em>

Step-by-step explanation:

<u>Intervals in the Number Line</u>

When representing real intervals in the number line, we use solid lines that start from the lower or upper limit and end in the final number. If there is no limit, then we use an arrow pointing to plus or minus infinity.

If the endpoint is included in the interval, we place a filled circle, if it's not included, we use a hollow circle.

We want to show the interval x\geq 11, this means we must include the 11 and go up to positive infinity. The only number line with such characteristics is that on the second option.

3 0
3 years ago
This pattern follows the "add 3" rule. What is the next number in the pattern?
azamat

Answer:

b

Step-by-step explanation:

3,6,9,12,15,18

15+3=18

6 0
3 years ago
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Answer: k=G/ 3 pi

Step-by-step explanation:just make k the subject of the formulae by dividing through by 3 pi

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4 years ago
Riley Kate had of a doughnut to
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Both child would receive 1/2
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3 years ago
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