There are 2 repeating decimals, so you will need a 1 followed by 2 zeros which is 100. You'll use 100 soon to multiply an equation.
Let's call the decimal number x.
Write
x = 0.212121...
Then multiply the equation above by 100, and write it above that equation.
You end up with
100x = 21.212121...
x = 0.212121...
Now set it up as a subtraction, and subtract the second equation from the first equation:
100x = 21.212121...
x = 0.212121...
- ----------------------------
99x = 21
Now solve for x. Divide both sides by 3:
33x = 7
Divide both sides by 33:
x = 7/33
Since x = 0.212121..., an d x = 7/33, that means 0.212121... must equal 7/33.
Answer: the fraction is 7/33
Answer:
600
Step-by-step explanation:
6 percent of 5000 is 300. 300x2=600.
Sorry if im wrong
Answer:
(x - 13) and (x + 3)
Step-by-step explanation:
Given
x² - 10x - 39
Consider the factors of the constant term (- 39) which sum to give the coefficient of the x- term (- 10)
The factors are - 13 and +3, since
- 13 × 3 = - 39 and - 13 + 3 = - 10, thus
x² - 10x - 39 = (x - 13)(x + 3) ← in factored form
Answer:
Step-by-step explanation:
question 1a) hey, so it would look like this for example:
question 1b) no, because they don't follow the rules of a 30-60-90 triangle (like the one shown below)
tell me if u have any questions
Answer:
A. Ratio boys to girls ---> 19 : 26
B. Ratio of 5th grade to 6th grade ---> 21 : 24
C. Ratio of girls to total number of chorus students ---> 26 : 45
Step-by-step explanation:
A. the amount of boys is 9 + 10, the amount of girls is 12 + 26
B. the amount of 5th graders is 12 + 9, the amount of 6th graders is 14 + 10
C. the number of girls is 12 + 14, and the number of chorus students is 12+9+14+10
