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Alchen [17]
2 years ago
13

1.5r – 3r + 8r + 2.5r​

Mathematics
1 answer:
Svetllana [295]2 years ago
5 0

Answer:

9r

Step-by-step explanation:

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Find the number of terms and the degree of this polynomial -3p^8+2p^2-5
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3 0
3 years ago
the first group of students consists of 10 and their average age was 13 years old the next group consisted of 30 students and th
Kazeer [188]

Answer: The average was 9 years old find the average age of both groups is 10 years old.

Step-by-step explanation:

Formula foe average : \text{Average} =\dfrac{\text{Sum of all observations}}{\text{Number of observations}}

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i.e. 13=\dfrac{\text{Sum of ages of students of first group}}{10}\\\\\Rightarrow\ \text{Sum of ages of students of first group}=13\times10=130      (1)

The next group consisted of 30 students and their average was 9 years old.

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4 0
3 years ago
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