2/5 lbs walnuts > 1/3 lbs almonds
Hope this helped ;)
Answer:
A, B and C
Step-by-step explanation:
A. Adding another researcher to provide ratings will make the study less biased.
B. A quiz or exam will show which students have a better understanding of the math material. Better quiz or exam results show that the site is more effective for a student with or without the supplemental instruction.
C. Having a greater sample size is better because a greater scope of students is covered. Different students have different abilities and learning preferences.
Multiply 80 by 5/8ths.
80*5/8=50
First number: x = 19
Second number: Y = -5
x + 2y = 9
2x + y = 33
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