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tatiyna
3 years ago
14

Break apart the addends to find the sum 18+21

Mathematics
1 answer:
ololo11 [35]3 years ago
3 0
We break apart the first numer:

10+8

the second:

20+1

and add like this:

18+21=10+8    +  20+1

now, we can mix up the order:

18+21=10+8    +  20+1= 10+20     + 8+1

add the parts:

18+21=10+8    +  20+1= 10+20     + 8+1=30+9=39




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Margarita [4]
$125.4 is the answer to #1
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7 0
3 years ago
The gift shop at manatee mall was having a clearance sale everything marked down 30%. The original price of a manatee hat was 18
jeka94
<h2>Greetings!</h2>

Answer:

$12.60

Step-by-step explanation:

To find this, you need to remember this equation:

Starting amount x \frac{100 - percent}{100}

Plug these values in:

18 x \frac{70}{100} = 12.6

So the clearance price was $12.60!


<h2>Hope this helps!</h2>
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  y = 1

Step-by-step explanation:

You should be able to tell by inspection that the line is horizontal at y = 1.

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