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3 years ago

8

Suppose that you measure a pen to be 10.6 cm long. Convert this to meters. Express the length in meters to three significant fig

ures.

1 answer:

Travka [436]3 years ago

7 0

Use dimensional analysis:

$\frac{10.6cm}{1}*\frac{1m}{100cm}=0.106m$

Since we multiplied a numerator and a denominator by centimeters, we are only left with meters.

This answer is already is three significant figures by default.

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An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a

Whitepunk [10]

Answer: $\mu=2.88\ \&\ \sigma^2=0.115$

Step-by-step explanation:

Given : The probability of a correct classification of any part is : p=0.96

sample size : n= 3

The formula to find the mean and variance for binomial distribution is given by :-

$\mu=np\\\\\sigma^2=np(1-p)$

Let the random variable X denote the number of parts that are correctly classified.

The, for the given situation, we have

$\mu=3(0.96)=2.88\\\\\sigma^2=(3)(0.96)(1-0.96)=0.1152\approx0.115$

Hence, the mean and variance of X are 2.88 and 0.115 respectively.

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3 years ago

What is (−2.1)⋅(−1.4)

professor190 [17]

Multiplying a negative number and another negative number makes the product positive.
So (-2.1)*(-1.4) = 2.94

8 0

2 years ago

Find the distance between the points (13,20) and (18,8)

steposvetlana [31]

Answer:

(5,12)

Step-by-step explanation:

because 18-13=5 and 20-8=12

5 0

4 years ago

Read 2 more answers

The commutative and associative properties work for which operations?

Norma-Jean [14]

Answer:

The associative and commutative properties can be used for addition and multiplication.

Step-by-step explanation:

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3 years ago

A store salesperson is paid 3% of his sales as a commission. He made sales of $2500. How much was his commission?

PolarNik [594]

1) Write 3% as 3/100

2) Since, finding the fraction of a number is same as multiplying the fraction with the number, we have:

$\frac{3}{100}$ of 2500 = $\frac{3}{100}$ × 2500

Therefore, the answer is 75

If you are using a calculator, simply enter 3÷100×2500 which will give you 75 as the answer.

Commission = $75

7 0

2 years ago