If we know that 128 is 74% of something, we can write it like this:
74%x=128.
If we take the percent away (percent means by hundred in latin, 1%=1/100), we'll have
74/100 *x=128
//let's multiply both sides by 100, that way we can get rid of the ugly "/100 because 100/100 = 1, and we can ignore 1 in multiplications
100*74/100 *x = 128 *100// let's simplify the left side: 100/100=1
74*x=128*100// let's calculate the right side now
74*x=12800// now we have to divide both sides by 74
x=12800/74
if we divde this, we have: 172 + 72/74. (why? see below)
We can simplify the fraction by division by 2: 172 36/37
00172
_______
12800:74
-74
___
540
- 518
-------
220
148
_________
72
2 1/2 x 3 = 7 1/2 = 7 4/8
10 11/8
- 7 4/8
3 7/8
A is the correct answer
Answer:
Tenth: 6.2
Hundredth: 6.16
Thousandth: 6.159
Step-by-step explanation:
***In general, round up when the number is greater or equal to 5. If number is less, round down***
Rounding to the tenths place means that there will be a SINGLE digit following the decimal. <u>Therefore, 6.1592 rounded to the tenths place will be 6.2 because '5' is equal to 5.</u>
Rounding to the hundredths place means that there will be TWO digits following the decimal. <u>Therefore, 6.1592 rounded to the hundredths place becomes 6.16 because '9' is greater than 5.</u>
Rounding to the thousandths place means that there will be THREE digits after the decimal.<u> 6.1592 rounded to the thousandths place becomes 6.159 because the digit to the right of the thousanths place is '2', meaning you round down. </u>The digit in the thousandths place will stay the same.
Domain for f(x) = (x - 3)/(x - 2) is <span>x ≠ 2.</span>
