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evablogger [386]
2 years ago
14

The resistance of a wire varies directly with its length and inversely with the square of its diameter. If 100 feet of wire with

diameter 0.01 inch has a resistance of 10 ohms, what is the resistance of 140 feet of the same type of wire if its diameter is 0.01 inch
Mathematics
1 answer:
DaniilM [7]2 years ago
4 0

Answer:

  14 ohms

Step-by-step explanation:

The resistance varies directly with length, so increasing the length by a factor will increase the resistance by the same factor.

__

The length of the wire increased by a factor of 1.4 from 100 ft to 140 ft. That means the resistance will increase by a factor of 1.4 from 10 ohms to 14 ohms. (The diameter did not change.)

The longer wire will have a resistance of 14 ohms.

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irakobra [83]

Answer:

24

Step-by-step explanation:

24 cubes. Reasoning varies. Sample reasoning: The length of the box

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or 24 cubes.

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3 years ago
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a rectangle has a base of 10 inches and a height of 16 inches. it is expanded so that it’s base is 15 inches. what’s its new hei
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Answer:

24

Step-by-step explanation:

multiply 10 by 1.5 to get 15.

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Work out 6/5 of 200 and show working out
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Answer:

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Step-by-step explanation:

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5 0
2 years ago
Niu has decorated x cards. He started with 24 stickers, and he used 4 stickers per card. Which expressions can we use to describ
Kisachek [45]

Answer:

24-4x

Step-by-step explanation:

We have been given that Niu has decorated x cards. He started with 24 stickers and he used 4 stickers per card. So stickers used in x cards will be 4x.

As initial number of stickers was 24, so we can find number of stickers left after decorating x cards by subtracting number of stickers used in x cards from 24.

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Therefore, the expression 24-4x will represent the number of stickers that Niu has left after decorating x cards.


7 0
3 years ago
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alisha [4.7K]

Answer:

Carly will have to spend $7.25

Step-by-step explanation:

We know that:

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To find how much 1.25 pounds of turkey will cost, multiply:

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Therefore, 1.25 pounds of turkey will cost $7.25

I really hope this helps!

-SpaceMarsh

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