Answer:
Step-by-step explanation:
The given equations are:
2a+7b=0 and 3a-5b=31
Statement Reason
1. 10a+35b=0, 21a-35b=217 (Multiply first equation by 5 and second by 7)
2. 31a=217 (Adding both the equations)
3. a=7 (Dividing both sides by 31)
4. 2(7)+7b=0 (Substituting a=7 in first equation)
5.14+7b=0 (solving step 4)
6. 7b=-14 (Subtracting 14 on both sides)
Answer:
2.56% chance of being selected
Step-by-step explanation:
Given
--- you and 38 others
Required
Chance of you being selected
To do this, we simply calculate the probability using:
Where:
--- i.e you are just 1 person
So:
Express as percentage
Answer:
y = -2/3x + 4
Step-by-step explanation:
2x + 3y = 12
3y = -2x+12
y = -2/3x + 12/3
y= -2/3x + 4
The answer should be, b = 1
Ten thousand and one thousand but in this case ten thousand four four thousand five hundred and thirty two