Answer:
<u>Mary purchased 160 pounds of sand</u>
Step-by-step explanation:
$72÷$0.45=160
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Ratio of:
Lambs 5:24
Rabbits 11:24
Goats 4:24
Piglets 4:24
Answer:
x=-4 and y=6
Step-by-step explanation:
Marcus score is 13.7, the mean is 12.89, and the standard deviation is 1.95, so I’ll do ( 13.7 – 12.89)/ 1.95, Since Marcus' z-score is 0.415. The area to the left of the z-score is 65.9% so therefore Marcus did scored better than 65.9% of the students. So Marcus needs to score 98% better of all the other students in order for him to receive an actual certificate.
