Henry has 3 black shirts and 7 blue shirts in his wardrobe. Two shirts are drawn without replacement from the wardrobe. What is
2 answers:
Answer:
The probability that both of the shirts are black is
Step-by-step explanation:
Given : Henry has 3 black shirts and 7 blue shirts in his wardrobe. Two shirts are drawn without replacement from the wardrobe.
To find : What is the probability that both of the shirts are black?
Solution :
Number of black shirts = 3
Number of blue shirt = 7
Total number shirts = 3+7=10
The probability that first shirts is black is
Two shirts are drawn without replacement from the wardrobe.
Number of black shirt left = 2
Total shirts = 9
The probability that second shirts is black is
So, The probability that both of the shirts are black is
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Answer:
n=21
Step-by-step explanation:
We must find n.
Remember PEMDAS. First we must do the Parentheses. Lets do distributive property by multiplying a number that is immediately outside the parentheses with each number inside the parentheses. Lets do this one side at a time.
First lets do 5(n - 7). We get 5n - 35
Now 2(n + 14) is 2n + 28
Okay...... now we have
Now lets do OPPOSITES!!!! We must do the opposite of each thing to both sides.
The opposite of -35 is positive 35. Lets add 35 to both sides. We get:
Now lets do the opposite of 2n which is -2n
this is looking quite nice isnt it..........
The opposite of 3 times n is 3 DIVIDED BY n. So lets divide both sides by 3
amazing.......