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2 years ago

13 If CDEF is a rhombus, find m FED.

Mathematics

1 answer:

Tatiana [17]2 years ago

8 0

Answer:

Step-by-step explanation:

8x-20=5x+1

-5 -5

3x=-20+1

+20 +20

3x=21

3 3

x=7

8(7)-20

FED=36

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Answer:

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Step-by-step explanation:

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3 years ago

GOOD REVIEW IF BOTH OF THE ANSWERS ARE CORRECT

Over [174]

Answer for 1:

I don't know the actual answer, but for Forms, you can press ctrl + U and find the answers in the code

Answer for 2:

x = 28

Step-by-step explanation:

Since the overall angle is 90°, and we already have 33, we subtract 33 from 90

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3 years ago

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kati45 [8]

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1 year ago

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Oduvanchick [21]

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2 years ago

Triangle ABC had a perimeter 18 cm

Anna007 [38]

Answer:

Use pythagoreum theorem to determine whether it is or isn't since I'm not really sure myself but here's my calculations.

Step-by-step explanation:

We need to find AC.

Picture a triangle called ABC. AB is one side and BC the other while AC is the hypotenuse.

AC=

$ac = \sqrt{ab ^{2} + {bc}^{2} } \\ ac = \sqrt{ {7}^{2} } + {3}^{2} \\ ac = \sqrt{49 + 9} \\ ac = \sqrt{58 } \\ ac = 7.6$

Round up the 7.6 to a whole number and you get AC=8. To get perimeter of a triangle simply add the sides together to get 18.

Not really sure about my answer but hope this helped.

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2 years ago