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Mathematics

2 answers:

noname [10]2 years ago

4 0

Answer:

D. 3/10

Step-by-step explanation:

jeka57 [31]2 years ago

3 0

Your best bet would be D.

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The force needed to stop a car varies directly as its weight W and the square root of velocity V are inversely as the distance d

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2 years ago

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1. Determining the probability of a coin landing heads up by actually tossing a coin several times is an example of what?

Oksana_A [137]

Answer:

Step-by-step explanation:

Theoretical probability and Experimental probability are related in that theoretical probability is based on your reasoning (e.g. two sides; therefore, there is a 50% chance of heads), but experimental probability is where your numbers are based off of actual results (e.g. you landed head 1/4th of the time; therefore, there is a 25% chance of getting heads.)

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2 years ago

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Write the augmented matrix for each system of equations.

Virty [35]

Answer:

see below

Step-by-step explanation:

List the coefficients and constant for an equation in one row of the matrix. The variables should be in the same order. Any missing terms are replaced by zero.

$\left[\begin{array}{ccc|c}9&-4&-5&9\\7&4&-4&-1\\6&-6&1&-5\end{array}\right]$

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2 years ago

A study of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at th

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Answer:

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.