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2 years ago

Cynthia rounds a number, x,to one decimal place. the result is 6.3.

Mathematics

1 answer:

gladu [14]2 years ago

7 0

The answer is: $6.25\leq6.3$

The explanation is shown below:

1. Cynthia rounds the number, which is identified as $x$ , to one decimal place and the result is 6.3.

2. Based on this, we know that $x$ could have been between 6.25 and 6.35. Therefore, the error interval for $x$ is given by:

$6.25\leq6.3$

Where $\leq$ indicates that the value 6.25 is included and indicates that the value 6.35 is not included (Because if $x$ had been exactly 6.35, Cynthia would round up to 6.4).

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2 years ago

What is the probability of drawing yellow marble followed by a red marble from a bag containing 12 yellow marbles, 16 red marble

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Option B

Probability of drawing yellow marble followed by a red marble is $\frac{32}{301}$

Solution:

Given that a bag containing 12 yellow marbles, 16 red marbles, and 15 green marbles

So total number of marbles = 12 + 16 + 15 = 43

To find: probability of drawing yellow marble followed by a red marble if the first marble is not replaced

The probability of an event is given as:

$probability =\frac{\text { number of favorable outcomes }}{\text { total number of possible outcomes }}$$

probability of drawing yellow marble followed by a red marble if the first marble is not replaced:

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$\text{ probability} = \frac{12}{43}$

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But first marble is not replaced

So we have 43 - 1 = 42 number of possible outcomes

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So probability of drawing yellow marble followed by a red marble is:

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2 years ago

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2 years ago

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