Answer:
(a - b)(a² + ab + b²)
Step-by-step explanation:
The difference of cubes is expressed as:
a³-b³
Using trial and error:
a³-b³
Check (a - b)(a² + ab + b²)
Expand
(a - b)(a² + ab + b²)
= a(a²)+a(ab)+a(b²)-a²b-ab²-b³
= a³+a²b+a(b²)-a²b-ab²-b³
Collect the like terms
= a³+a²b-a²b+ab²-ab²-b³
= a³-b³
Hence the required option is
Answer:
<em>let</em><em> </em><em>the</em><em> </em><em>cost</em><em> </em><em>price</em><em> </em><em>=</em><em> </em><em>5</em><em>x</em>
<em>let</em><em> </em><em>the</em><em> </em><em>selling</em><em> </em><em>price</em><em> </em><em>=</em><em> </em><em>7</em><em>x</em>
<em>profit</em><em> </em><em>=</em><em> </em><em>selling</em><em> </em><em>price</em><em> </em><em>-</em><em> </em><em>cost</em><em> </em><em>price</em>
<em>=</em><em> </em><em>7</em><em>x</em><em> </em><em>-</em><em> </em><em>5</em><em>x</em><em> </em>
<em>=</em><em> </em><em>2</em><em>x</em>
<em>profit</em><em> </em><em>percentage</em><em> </em><em>=</em><em> </em><em>2</em><em>x</em><em>/</em><em>5</em><em>x</em><em> </em><em>×</em><em> </em><em>1</em><em>0</em><em>0</em>
<em>=</em><em> </em><em>2</em><em>×</em><em>2</em><em>0</em>
<em>=</em><em> </em><em>4</em><em>0</em><em> </em><em>percent</em>
Answer:138
Step-by-step explanation:
Cost of a canoe is $12 and call number of days rented two mountain bikes are $18 and call number of days rented. That sum has to be < $138 (it should be less than or equal to $138, but that isn't a choice).12c+18m<$138C.
Marisol biked a total of 71 miles. On the other hand, she biked about 10 more miles on Wednesday than on Thursday.
<h3>How to round numbers?</h3>
The general rule is to move the decimal number to its nearest tenth. For example, 5.6 should be rounded as 6 but 5.1 should be rounded as 5.
Now, let's round the distance covered by Marisol each day:
- Monday: 12.3 = 12
- Tuesday: 14.1 = 14
- Wednesday: 17.7= 18
- Thursday: 11.8 = 12
- Friday: 15.2 = 15
<h3>What distance did Marisol covered?</h3>
To know this just add the distance every day:
- 12 + 14 +18 + 12 + 15 = 71 miles
<h3>How much more did she bike on Wednesday than on Thursday?</h3>
Distance covered on Wednesday - distance covered on Thursday
Note: This question is incomplete; here is the missing information:
- Monday 12.3
- Tuesday 14.1
- Wednesday 17.7
- Thursday 11.8
- Friday 15.2
Learn more about addition in: brainly.com/question/17407789
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