7.5x + 40 = 70
Note the equal sign. What you do to one side, you do to the other. Isolate the x. Do the opposite of PEMDAS.
First subtract 40 from both sides
7.5x + 40 (-40) = 70 (-40)
7.5x = 70 - 40
7.5x = 30
Next, divide 7.5 from both sides
7.5x/7.5 = 30/7.5
x = 30/7.5
x = 4
4 friends are going to the aquarium together
hope this helps
Answer:
4
Step-by-step explanation: 4*4 is 16. 4^2 is 16. So the square root of 16 is 4.
First we get 30% ounces of peanuts in mixed nuts:
(0.3) * (32) = 9.6
To find the percentage of peanut concentration of the final mix if you add x ounces of peanuts:
% of peanuts = ((x + 9.6) / (x + 32)) * (100)
Answer:
An expression can be used is:
% of peanuts = ((x + 9.6) / (x + 32)) * (100)
Answer:
2 acute and one right.
Step-by-step explanation:
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Answer: The correct answer is "No, because there is a lot of variability in the language arts book data."
The mean of the language arts book is higher than the mean of the social studies book, however, there is a lot of variability in the language arts book. This means that the language arts book could actually be lower than the social studies book. It is not likely but it could happen.