<span>the line over the 28 means the 28 repeats forever.
1.282828.... and so on
let x be the rational number 1.28...
we can use this trick:
100*1.282828....= 128.282828... (the decimal 28 part repeats)
100x = 128.28...
next:
100x - x = 128.282828... - 1.282828...
the .282828... part will be subtracted away
99x = 127
divide both sides by 99 to get
x= 127/99</span>
Answer: There were 7 children
Step-by-step explanation:
Let's use <em>x </em>to represent the children and <em>y </em>to represent the adults.
We know they combine to make a group of 25 people so x+y=25
We also know that they paid $201 and that there is $3 per child and $10 for adults so 3x+10y=201
I will solve by substitution.
Solve for y in the first equation
Sub in our value for y into the other equation and solve for x
Step 1) Simplify
Step 2) Subtract 250 from both sides
Step 3) Divide both sides by -7
Subtract 4x on both sides then divide by negative to all three numbers and your answer will be y = 1/2x - 3/2
Answer:
A. is 44 (I could read it all the way, its 44 if the second number is 19, If its 15 then the answer would be 48. B. is 144. I don't know what c is
Step-by-step explanation:
You have to add the two numbers that show then subtract the sum by 180.
Sorry if it's wrong.
Answer:
The final balance is $5,796.37.
The total compound interest is $796.37.
Step-by-step explanation: