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Tom [10]
4 years ago
11

The length of a spring when it’s at rest is measured to be 0.56 centimeter. How many significant figures are there in this measu

rement?
A. 3
B. 2
C. 1
D. 0
Mathematics
2 answers:
Ivahew [28]4 years ago
8 0

Answer:

Option B - 2

Step-by-step explanation:

We have given, the length of a spring when it’s at rest is measured to be 0.56 centimeter.

We have to find, how many significant figures are there in this measurement?

Solution :

The rules to get the significant figure are

  • Non-zero digits are always significant.
  • Any zeros between two significant digits are significant.
  • A final zero or trailing zeros in the decimal portion ONLY are significant.

The given measurement is 0.56 cm.

It has two trailing zeros in the decimal i.e. 5 and 6.

There are only two significant figures.

Therefore, Option B is correct.

melomori [17]4 years ago
3 0

Answer:

Option B - 2

Step-by-step explanation:

Given :The length of a spring when it’s at rest is measured to be 0.56 centimeter.

To find : How many significant figures are there in this measurement?

Solution :

There are two important rules to find the significant figure :

1) Non-zero digits are always significant.

2) Leading zeroes in front of decimal points are not significant.

Therefore, In the given measurement 0.56 cm.

There are only two significant figures.

So, Option B is correct.

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Answers:

  1. C) Factored form
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=========================================

Explanations:

  • For problems 1 and 2, there's not much to say other than you'll just have to memorize those terms. Standard form is ax^2+bx+c in general. The exponents count down 2,1,0. Factored form is where we have two or more factors multiplying with each other. Think of something like 21 = 7*3 showing that 7 and 3 are factors of 21.
  • For problem 3, the y intercept is the last value. It's the constant value. Plug in x = 0 and you'll get y = -8 as a result. The y intercept always occurs when x = 0.
  • In problem 4, we apply the square root to both sides to get x = -5 or x = 5. The plus or minus is needed. This is because (-5)^2 = 25.
  • In problem 5, we apply the square root to both sides to undo the squaring operation.
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3 years ago
Please help me answer questions 48 and 48 with the working out please. This is very urgent and i’m giving out 8 points not 5!!!
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Answer:   65°

<u>Step-by-step explanation:</u>

E=w(t_f-t_o)\\\\E: 10\ cubic\ feet\times \dfrac{1000\ BTU}{1\ cubic\ foot}\times \ 60\%\quad \rightarrow \quad E=6000\ BTU\\\\\\w:50\ gallons\times \dfrac{8\ pounds}{1\ gallon}\quad \rightarrow \quad w=400\ pounds\\\\\\\\E=w(t_f-t_o)\\\\6000=400(t_f-50)\\\\\dfrac{6000}{400}=\dfrac{400(t_f-50)}{400}\\\\.\quad 15=t_f-50\\\\\\.\quad 15=t_f-50\\.\ \underline{+50}\quad \underline{\quad \ +50}\\.\quad 65=t_f

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13*21/3 = 273/3

Then you can divide 273 by 3 to get the final answer:
273/3 = 91

He will have 91 peaches overall.
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