At Venn diagram there are 4 parts (20 pieces):
1. Colored only in blue - quadrilaterals with four equal side lengths (3 pieces);
2. Colored only in orange - quadrilaterals with four right angles (6 pieces);
3. Colored in both blue and orange - quadrilaterals with four right angles and with four equal side lengths (2 pieces);
4. Colored in white - quadrilaterals withoutprevious two properties (9 pieces).
Consider events:
A - a randomly chosen quadrilateral has four right angles;
B - a randomly chosen quadrilateral has four equal side lengths;
Use formula to find the probability that a randomly selected quadrilateral with 4 right angles also has four equal side lengths:
Answer: Pr=0.25
This one is pretty simple. So you'd need to divide 3.40 by 4 to find the price of one bag of ice.
One bag of ice cost 0.85
0.85 * 6 = 5.10
$5.10 would be your new total
1 1/5 x 5 3/5 is 3 3/5. Hope this helps!
First line:
y=0.5x-1
second/dotted line:
y=2x-4
your allowed values are below the first line and above the second, so the system is
I: y<=0.5x-1
II: y>=2x-4
your dotted line might also mean > instead of >=, but this depends on the notation used in class