1.
558 can be rounded to 600.
44 can be rounded to 40.
600 x 40 = 24,000
2.
9 x 802 = 9 (800 +2) =7200 + 18 = 7218
3.
3699 x 7 = (3700-1) x 7 = 25,900 - 7 = 25,893
4.
34 x 93 = 34 x (100-7) = 3400 - 238 = 3162
5.
678 x 87 = 58,986
1 2/7 = 9/7
9/7 * 6/7 = 54/49
Answer: 10 cents
Step-by-step explanation:
First find the unit rate of each item.
$42.60 divided by 100= 0.426
$32.60 divided by 100= 0.326
Then find the difference
0.426 minus 0.326= 0.1 or 10 cents.
The price of third MP3 player is $58.40
Step-by-step explanation:
Given,
Cost of one MP3 palyer = $56
Cost of another MP3 player = $62
Average price of MP3 player = $58.80
Let,
Cost of third MP3 player = x
Average = 
Multiplying both sides by 3
The price of third MP3 player is $58.40
Keywords: average, division
Learn more about division at:
#LearnwithBrainly
The solution would
be like this for this specific problem:
(cos^2x-1)/cosx+1
cos^2x-1= (cosx+1)(cosx-1)
cosx-1
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