9514 1404 393
Answer:
60
Step-by-step explanation:
Gavin has 20/4 = 5 times as many sweets as his corresponding number of ratio units. The total number of ratio units is 4+5+3 = 12, so the total number of sweets is 5×12 = 60.
There are 60 sweets altogether.
_____
They are divided as ...
- Gavin: 20
- Colin: 25
- Dan: 15
Using Venn probabilities, and supposing the incomplete probabilities, it is found that there is a 0.35 = 35% probability that a randomly-chosen book from the library is fiction or has a white cover.
<h3>What is a Venn probability?</h3>
In a Venn probability, two non-independent events are related with each other, as are their probabilities.
The first step to solve a problem using Venn probabilities is identifying the events. In this problem, they are:
The "or probability" is given by:

In this problem:
- The probability that a randomly-chosen book is fiction is 0.15, hence
.
- The probability that randomly-chosen book has a white cover is 0.3, hence

- The probability that a randomly-chosen book is fiction and has a white cover is 0.1, hence

Then:



0.35 = 35% probability that a randomly-chosen book from the library is fiction or has a white cover.
You can learn more about Venn probabilities at brainly.com/question/25698611
Answer:
Step-by-step explanation:
The base is 16 cm by 16 cm.
OD = 8 cm
AD = √(8² + 7²) = √113 ≅ 10.6 cm