Select the actions you use to solve 3x = 12. Then select the property that justifies that action.
1 answer:
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Answer:
a. 720
b. 0.3
Step-by-step explanation:
a.
Three balls are selected at random without replacement.
First ball can be selected in 10 ways
Second ball can be selected in 9 ways
Third ball can be selected in 8 ways
Thus, there are 10×9×8 =720 different ways of selecting three balls.
b.
There are three cases that satisfy this condition
- first ball picked is 5, the others are not
- first ball is not 5, second is 5, third is not
- first and second ball is not five, third ball is 5
Each probabilities are:
Thus, one of the balls selected is the number 5 is then
If you have listed the answer choices properly, none is correct. The orthocenter is (-2, 12).
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See the attached figure.
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See the attached figure.
The formula of the surface area of the rectangular prism is equal:
where:
l - length
w - width
h - height
We have:
l = 5m
w = 8m
h = 9m
Substitute:
where:
l - length
w - width
h - height
We have:
l = 5m
w = 8m
h = 9m
Substitute: