Answer:
D. 72
Step-by-step explanation:
Use permutation to answer this question taking notice of the order.
The quiz has 3 true/false questions. This means are there 2 possible ways to answer the true/false question hence 2³
The quiz also has 2 multiple choice questions that have 3 option each. This means 3²
The number of possible ways to complete the quiz will be;
2³ × 3² = 8×9 =72
S=weight of soybean protein, C=weight of cornmeal protein.
Total weight of each protein is 0.18S+0.19C=0.17×360=61.2 lb.
Total weight of meal is S+C=360 lb. So S=360-C.
Therefore 0.18(360-C)+0.19C=61.2, 64.8-0.18C+0.19C=61.2, 0.01C=-3.6.
Clearly we would get a negative value for C. When you look at the question you will realise that there is a larger percentage of protein in the ingredients than there is in the mixture. The expected amount of protein in the mixture should be between 18% and 19%. Please check your figures.
Answer:
72 pi + 48 pi= 120pi (not sure if I am right tho)
Step-by-step explanation:
I don't see a mistake. You solve in parentheses first, then you solve exponents. If the exponent is 0 in this context, the answer would be 0.
