If the ratio is 4:1 , pencils being the 4 and erasers being the 1, there are 4 pencils for every 1 eraser. Now, substitute the 4 pencils for 20 pencils. How do you get to 20 from 4? multiply by 5. You multiply the 4 pencils by 5 to get 20, and u multiply the 1 eraser by 5 to get 5, so there are 20 pencils: 5 erasers
If there is a total of 90 marbles, and we know that there is 60 blue marbles. We can assume that the remaining 30 marbles are red therefore the ratio of red to red marbles would be 60÷30, which is 2. Or the ratio is 60:30 which is reduced to 2:1.
Answer:
1/6
Step-by-step explanation:
On an equal dice? 1/6
There are 6 sides to a dice.
The sum of all the probabilities is 1.
As each side has equal probability, their probability is 1 / number of options = 1/6.
Answer:
x=3, x=-2
Step-by-step explanation:
If this equation is 
, then plug in each number. For this example, I'll only do the correct answers.
Hope this helps!
Answer:
Below is the answer in the simplest form possible: 0. 21 repeating as a fraction = 7/33 Decimal Repeating as a Fraction Calculator
