Solve for b using the pythagorean theorem
1 answer:
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Let the positive number be 
The expression is
⇒ expanding the bracket gives,
⇒ rearranging to equate one side to zero
⇒ Dividing each term by 7 to simplify
⇒ Factorising gives
and 
Hence, the first number is -5 and the second number is 3
The expression is
Hence, the first number is -5 and the second number is 3
Answer:
580 seedlings altogether.
Step-by-step explanation:
Given that,
Ali plants 40% of the total number of seedlings, Ben plants 45% of the total number of seedlings, and Cliff plants the rest of the seedlings. Cliff plants 87 seedlings.
The percentage of the seedling planted by Cliff = 100% - 45% - 40% = 15%
<em>Let x = the total number of seedlings</em>
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Hence, three boys plant 580 seedlings altogether.