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SassyChumpkins
01.12.2020 •
Mathematics
A student grew 4 seeds in a bag. The height of the plant from the first seed was 12 cm. The other 3 seeds grew plants that were 15 cm, 7 cm, and 9 cm. What was the average height of the plants from the seeds in this bag? Round your answer to the nearest tenth.
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Ответ:
10.8 cm is the average
Step-by-step explanation:
(12 + 15 + 7 + 9)/4 = 10.8
Ответ:
B. 18 cm.
Step-by-step explanation:
Because they are similar, we can say that segment AC corresponds to segment DF, and segment AB corresponds to segment ED. So, we can set up a proportion.
2 * x = 12 * 3
2x = 36
x = 18
So, the length of ED is B. 18 cm.
Hope this helps!