Answer:
One
Step-by-step explanation:
<em>Testing only one variable at a time lets you analyze the results of your experiment to see how much a single change affected the result. If you're testing two variables at a time, you won't be able to tell which variable was responsible for the result.</em>
<em>Hope this helps,</em>
<em>:)</em>
<em></em>
<em />
Answer:
2.57 or -0.907
Step-by-step explanation:
Answer: 
Step-by-step explanation:
When we throw a die , Total outcomes =6
When we throw 3 dice , Total outcomes = 6 x 6 x 6 = 216 [by fundamental counting principle]
Given : Three fair dice are rolled, one red, one green and one blue.
Favorable outcomes : When the upturned faces of the three dice are all of different numbers i.e. no repetition of numbers allowed
By Permutations , the number of favorable outcomes = 
The probability that the upturned faces of the three dice are all of different numbers = 

The probability that the upturned faces of the three dice are all of different numbers is
.
Answer:
The number of candies Hayley has is 16 .
Step-by-step explanation:
The number of candies Hayley has = x
So, Number of candies Hayden has = (x + 3)
Then the Number of candies i have = 2(x + 3)
Also,according to the question:
2(x + 3) = 38
or, 2x + 6 = 38 ⇒ 2x = 32
or, x = 32/2 = 16
⇒ x = 16
So, the number of candies Hayley has is x = 16 .