Direct variation is when is the same for each coordinate.
Indirect variation is when x · y is the same for each coordinate.
11. Answer: Direct Variation
<u>Step-by-step explanation:</u>
12. Answer: Indirect Variation
<u>Step-by-step explanation:</u>
Melissa rolls 2 fair dice. The probability of getting a total of 12 is
<u>Solution:</u>
Given, Melissa rolls 2 fair dice and adds the results from each.
We have to work out the probability of getting a total of 12
<em><u>The probability of an event is given as follows:</u></em>
Now, total outcomes = 6 for 1st die 6 for 2nd die = 6 6 = 36.
Now, favourable outcomes = 1 [ since, we have to get a sum of 12, and only one case exists i.e. 6 + 6]
Hence the probability of getting a total of 12 is
Answer:
Price of Caleb's groceries before tax= $6.4
Step-by-step explanation:
Let price of groceries before tax be = $
Sales tax % = 2.5%
Sales tax applied =
Actual sales tax paid = $1.60
∴
Multiplying both sides by 100.
Dividing both sides by 25.
∴ Price of groceries before tax= $6.4
Answer:
<h2>The intensity of the sound is 3.16, approximately</h2>
Step-by-step explanation:
The equation that determines decibel levels is
Where represents the intensity of the sound and the ten power represents the softest sound, that ratio is the comparison to find the decibels.
In this case, we have 125 decibels. So, we need to use this value in the formula to find the intensity
Therefore, the intensity of the sound is 3.16, approximately. Which is at the same level as a loud rock concert.
The second result is more precise because it's in millilitre,so if the first were to be fully precise,it should have been 78.6 cm