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satela [25.4K]
3 years ago
5

How to round in math im confused

Mathematics
2 answers:
fiasKO [112]3 years ago
8 0
So rounding can be confusing but it can also be pretty easy
<span>
</span>Here is an example:
 4556.78 round to the nearest whole number

So what I was taught to do is underline what you are rounding, in this case, the 7. After that you see if 7 I greater than 5, in this case, it is so your new answer would be 4557


 

Nastasia [14]3 years ago
5 0
If the number you are rounding is 5, 6, 7, 8, or 9, it goes to ten. If the numbers are 4, 3, 2, or 1, then round down. For example,, 37 is rounded to 40. 34 is rounded to 30.
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If x = -6 then -x 2 = <br> - (-6) 2 =
soldi70 [24.7K]

Answer:

12

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negative times a negative equals a positive.

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zalisa [80]
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tigry1 [53]

Answer:

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4 0
2 years ago
The table below shows the number of cameras made when an assembly line runs at a constant rate for a certain number of hours. Nu
jeka57 [31]

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7 0
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Novosadov [1.4K]
• So we know that.....

x represent bags of snack and y is bottles of water.


This equations shows the total amount and the cost of each water bottle and snack:

20.00 = 2.50x + 1.00y

Total: $20.00
Snack: $2.50
Water Bottle: $1.00


And this question shows the total items:

11 = x + y

Which there will be some snack + some water bottle = 11 items


—————————————————————

• Now I’m going to first solve for x, which is the amount of bags of snack.

I will use the equation, 11 = x + y.

(First, we’ll subtract y from both side, since we’re solving for x [UNDO])

11 = x + y
-y = - y
_______
11 - y = x —> so x is equal to 11 minus y.


—————————————————————

• Now we’re going to plug the 11 - y as x in the equation: 20.00 = 2.50x + 1.00y to solve for y.

20.00 = 2.50 (11 - y) + 1.00y

20.00 = 27.5 - 2.50y + 1.00y (Distributed)

20.00 = 27.5 - 1.50y (Combine like terms)

20.00 = 27.5 - 1.50y
-27.5 = -27.5 (Subtract -27.5 both side)
——————————
-7.5 = - 1.50y


-7.5 = -1.50y
—— ——— (Divide both side by -1.50)
- 1.50 = -1.50

5 = y

y is equals to 5, which means that there are 5 water bottles.


Now we know there are 11 items total and because there are 5 water bottles, there will be 6 bags of snacks. 11-5=6

—————————————————————

ANSWER:

They bought 6 bags of snacks! :)
4 0
3 years ago
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