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uranmaximum [27]
3 years ago
13

What is the value of the expression when x = 5, y = 4, and z = 3?

Mathematics
2 answers:
charle [14.2K]3 years ago
5 0
The answer is C (third )
Elan Coil [88]3 years ago
3 0
C-75 would be your answer
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How can I solve 15+50-5/12. this is for fifth grade
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A pharmacist has 80 milileters of a 25 percent saline solution. Which expression can be used to find the percentage of the conce
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Answer:


Step-by-step explanation:

Final concentration % = [grams of salt / mililiters of solution] * 100


grams of salt = grams of salt from solution 1 + grams of salt from solution 2


grams of salt from solution 1 = mililiters * %/100 = 80 mililiters * 0.25 g/mililiters = 20 g


grams of salt from solution 2 = mililiters *%/100 = x*0.10 g/mililiters = 0.1x


mililiters of final solution = mililiters from solution 1 + mililiters from solution 2


mililiters of final solution = 80 mililiters + x mililiters


=> Final concentration, %  =  [0,10x + 20 g] / [x + 80 mililiters] * 100


6 0
3 years ago
Question 1 (Essay Worth 1 points) Which of the following expressions are equivalent to –3.5(2 – 3n) – 2.5n? A: –7 – 8n B: –7 + 8
zzz [600]
B is the anwser that I got
5 0
3 years ago
What is the difference between 3/7 and 1/14?
Elena-2011 [213]
C. 5/15
First, change 3/7 to have the same denominator as 1/14.
3/7=6/14 because 7•2=14 (denominator) 3•2=6 (numerator)
Next, subtract 1/14 from 6/14.
6/14-1/14=5/14
3 0
2 years ago
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