Write 25 x 10in standard form.
1 answer:
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Answer:
A loss of 1.8$
Step-by-step explanation:
In the bag in this problem, we have:
r = 1 (number of red marbles)
w = 7 (number of white marbles)
b = 2 (number of blue marbles)
n = r + w + b = 1 + 7 + 2 = 10 (number of total marbles)
So, the probabilities of choosing a red, a white or a blue marble are:
(probability of choosing a red marble)
(probability of choosing a white marble)
(probability of choosing a blue marble)
The winning associated to each probability are:
+$5 if the marble is red
-$3 if the marble is white
-$1 if the marble is blue
So the expected winning can be calculated as follows:
So, he can expect a loss of 1.8$.
Answer:
280 ft squared
Step-by-step explanation:
To find the area of the nonshaded portion, we can find the area of the entire floor and then subtract the shaded area.
The total area is that of a rectangle: 30 * 15 = 450 ft squared.
Now, the shaded region is made up of a rectangle and a triangle.
- The rectangle has length 8 and width 10, so its area is 10 * 8 = 80 ft squared.
- The triangle has base 12 and height 15, so using the area of a triangle formula: (where b is the base and h is the height) = (12 * 15)/2 = 180/2 = 90 ft squared.
- The total shaded region is: 80 + 90 = 170 ft squared
Subtract 110 from 450: 450 - 170 = 280 ft squared.
Thus, the answer is 280 ft squared.
Hope this helps!