Answer:
x = 12
Step-by-step explanation:
1/2 X = 6
X = 12 x 6
It is 2.5 times more expensive.
50 Percent of 4 is 2.
So, 4 + 4 + 2 = 10
Answer:
64
Step-by-step explanation:
the different sum of money is 64
The value of x = 75 ⇒ 2nd answer
Step-by-step explanation:
Let us revise some rules of logarithmic function


vice-versa 
- If ㏑(a) = ㏑(b), then a = b
∵ 
- Use the 2nd rule to simplify it
∵ 
∵ 
∴ 2㏑(2x) - ㏑(10x) = ㏑(30)
- Use the 3rd rule in the 1st term
∵ 2㏑(2x) = ㏑(2x)² = ㏑(4x²)
∴ ㏑(4x²) - ㏑(10x) = ㏑(30)
- Use the 1st rule with the left hand side
∵ 
∴ 
∵ 
∴ 
- Use the 4th rule
∴
x = 30
- Multiply both sides by 5
∴ 2 x = 150
- Divide both sides by 2
∴ x = 75
The value of x = 75
Learn more:
You can learn more about logarithmic functions in brainly.com/question/11921476
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Answer:
The first unknown number is 10 the second is 20 and the third is 60
Step-by-step explanation
Since there is six numbers you have to multiply 25 times 6 = 150
Then 15+15+30=60
150-60= 90
10+20=30
30 times 2 equals 60
30+60=90
90+60= 150
150 divided by 6 = 25