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True [87]
4 years ago
14

Determine whether the conclusion is valid. If not, identify the additional information needed to make it valid.

Mathematics
2 answers:
Sergio039 [100]4 years ago
8 0

Answer:

Not valid: DF is perpendicular to EG (2nd)

Step-by-step explanation:

Not all parallelograms whose opposite sides are parallel is a rhombus. A rhombus's special characteristic is that their diagonals are perpendicular to each other.

ivanzaharov [21]4 years ago
6 0

Answer:

Not valid: DF is perpendicular to EG (2nd)

Step-by-step explanation:

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8/9 to what power equals 64/81
Ierofanga [76]

2nd

Step-by-step explanation:

8/9 to the second power equals to 64/81. Hope this helps!

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3 years ago
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5/8% of 520 - is it 325 of 3.25?​
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Answer:

wait it is 325 of 3.25

Step-by-step explanation:

I can't tell if your asking for just one number, which would be 3.25...

4 0
3 years ago
Planes X and Y are perpendicular. Points A, E, F, and G are points only in plane X. Points R and S are points in both planes X a
NemiM [27]
Given:

Planes X and Y are perpendicular to each other
Points A, E, F, and G are points only in plane X
Points R and S are points in both planes X and Y
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3 years ago
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How is 0.9999 Equal to 1 again?
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3 0
4 years ago
A rectangle's perimeter is equal to 27 plus its width. The length of the rectangle is four times its width. What is the
lara31 [8.8K]

Answer:

P = 3

Step-by-step explanation:

L = 4*w

P = 27 + w

P = 2*L + 2*w = 27 + w

2L = 2*(4w) = 8w

Put that into the perimeter formula (the first one.)

P = 8w + 2w = 27 + w

10w = 27 + w                        Subtract w from both sides

9w = 27                                Divide by 9

w = 27 / 9                          

w = 3

You should find the Length just so you can check it.

L = 4w

L = 4*3

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Check

P = 2L + 2w

P = 2*12 + 2*3 = 30

P = 27 + w

P = 27 + 3

P = 30 and everything checks.

8 0
3 years ago
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