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3 years ago

Wegnerkolmp2741o plz help me only wegnerkolmp2741o

Mathematics

1 answer:

34kurt3 years ago

7 0

Answer:

1. Triangular prism

5 faces
6 vertices
9 edges

2. Trapezoidal prism

6 faces
8 vertices
12 edges

3. Pentagonal prism

7 faces
10 vertices
15 edges

4. Hexagonal prism

8 faces
12 vertices
18 edges

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On a scale drawing of a museum, two water fountains are 10 inches apart. The actual distance between them is 400 feet. On the sa

AysviL [449]

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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 : $\text{Average} =\dfrac{\text{Sum of all observations}}{\text{Number of observations}}$

Given : The first group of students consists of 10 and their average age was 13 years old.

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.

i.e. $9=\dfrac{\text{Sum of ages of students of next group}}{30}\\\\\Rightarrow\ \text{Sum of ages of students of nextgroup}=9\times30=270$ (2)

Then from (1) and (2) , the sum of both groups (first group and next group )students = 130+270 =400

Combined students of both groups (first and next group )= 10+30=40

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3 years ago

Julias text messaging plan costs $8 for the first 400 messages and 20e for each additional text message. If she owes $24.00 for

Makovka662 [10]

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160 is the answer because 8x20 is 160 also 20÷400 is 20 so that made pretty good sense

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3 years ago