Eloise got the following scores on the first five quizzes of the semester: 6,9,7,8,9. There is one more quiz left. What score mu
st Eloise get on the last quiz to have a mean quiz score of 8? Explain how you found your answer
1 answer:
Answer:
9
Step-by-step explanation:
when u add her past five scored together, you get 39. your equation would be
39 + x
------------- = 8
6
you multiply both sides by 6 and get
39+x = 48
subtract 39 from both sides to get 9
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Answer:
2370 cm²
Step-by-step explanation:
2(32·15+15·15+15·32) = 2370
small frames ($8): s
large frames ($15): L
Cost: 8s + 15L = 239 ⇒ 1(8s + 15L = 239) ⇒ 8s + 15L = 239
Quantity: s + L = 22 ⇒ -8( s + L = 22) ⇒ <u> -8s -8 L = -176 </u>
7L = 63
L = 9
Quantity: s + L = 22 ⇒ s + (9) = 22 ⇒ s = 13
Answer: 13 small frames, 9 Large frames
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