ronaldo22 ronaldo22
  • 02-07-2019
  • Mathematics
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Please help me do question 21, 22 and 23. I am in 6th grade.

Please help me do question 21 22 and 23 I am in 6th grade class=

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dvclee2
dvclee2 dvclee2
  • 02-07-2019

Question 21: 24 minutes

[tex]\frac{3}{\frac{3}{2} } = \frac{x}{12}[/tex]

x = [tex](\frac{3}{\frac{3}{2} })(12)[/tex]

x = 24

Question 22: 20 centimeters

x = one side of the square

x² = 25

x = 5

4x = perimeter

4(5) = perimeter

20 = perimeter

Question 23: 17 sides

Hexagon = 6 sides

Octagon = 8 sides

Triangle = 3 sides

Total amount of sides = 6 + 8 + 3

Total amount of sides = 17

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