Please help me and my son I am confused
1 answer:
Answer:
-13 -
+ 4p + 3
Step-by-step explanation:
I am having a little trouble reading the number. I think 5 is the question number and not part of the problem. I think this is the problem:
(4p - 6 - 3) - (8
+ 7
- 6) You take the opposite of everything inside the second set of parentheses. You can think of it as multiplying through by -1
4p - 6 - 3 - 8
- 7
+ 6 Now we combine like terms. That is the numbers with the same variable p and the same power of p.
-13 - 8
+ 4p + 3
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Answer:
17 days.
Step-by-step explanation:
Let the company B takes x hours to clear the parcel of land alone.
Now, company A takes 2 hours longer time to clear the parcel of land than company B.
Therefore, company A will take (x + 2) hours to do the same job alone.
Now, Company A in one hour does part of the job.
And Company B in one hour does part of the job.
So, working together for one hour they will do parts of the job.
Therefore, they will complete the job in hours.
Hence, {Given}
⇒ x² + 2x = 18x + 18
⇒ x² - 16x - 18 = 0
Applying the Sridhar Acharya's formula,
{Neglecting the negative root as x can not be negative}
⇒ x = 17 days (Answer)