What is the value of b. If A+B=C and A=35 and C=25 Explain how you got this answer

Mathematics

2 answers:

Misha Larkins [42]3 years ago

8 0

Answer:

$B=-10$

Step-by-step explanation:

Hi!

So let's write the equation again

$A+B=C$

The next step is to plug in known values:

$35+B=25$

Now we solve this as a normal algebra equation:

Do same to both sides

$B = 25-35$

$B=-10$

I hope this helped. Let me know if you have any questions

mamaluj [8]3 years ago

8 0

The answer is -10. No positive number could equal 25 and if 35-25 is 10, it would only make sense to be negative. Say if you have $25 but you need 35, you’d be in debt of $10 you borrowed from someone else. Hope this makes sense, I’m not the best at explaining.

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Question 45 A length of pipe that weighs 45 pounds is cut into two pieces. One of the pieces is 3 feet long and weighs 18 pounds

dmitriy555 [2]

Answer: 4.5 pounds.

Step-by-step explanation:

Given : Weight of original pipe =45 pounds

Weight of first piece = 18 pounds

Then, Weight of other piece = 45- 18 = 27 pounds

Length of first piece = 3 feet

Let x be the length of other piece.

As length is directly proportional to weight.

Then, $\dfrac{x}{27}=\dfrac{3}{18}$

$\Rightarrow\ \dfrac{x}{27}=\dfrac{1}{6}\\\\\Rightarrow\ x=\dfrac{1}{6}\times27 =4.5$

Hence, the he length of the other piece = 4.5 pounds.

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Nutka1998 [239]

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