Answer:
D. 
Step-by-step explanation:
We have been given that a bag contains x blue chips and y red chips. The probability of selecting a red chip at random is 3/7. We are asked to find the 
.
Since we are told that probability of selecting a red chip at random is 3/7, so red balls are 3 and total balls are 7:
Since total balls are 7, so we will get:
Upon substituting 
in expression , we will get:
Therefore, the value of is and option D is the correct choice.
Answer:
Step-by-step explanation:
- Number of pens/pencils = p
- Cost of pens/pencils = $0.85
- Number of erasers = e
- Cost of erasers = $1.15
<u>Money spent:</u>
Answer:
B.6
Step-by-step explanation:
When we add and subtract, we do it from left to right
13+ (-12) - (-5)
13+-12
13-12 = 1
1 - -5
A negative negative is a positive
1 +5
6
Multiply like you normally would then add the decimal to the product. In this case it's two decimal places.
Try solving for the variable and get everything to one side
