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melisa1 [442]
3 years ago
11

“If a quadrilateral is a parallelogram, then it is a square”

Mathematics
1 answer:
yuradex [85]3 years ago
6 0
Yes that is true, all opposite sides would be parallel, and all the corners are 90 degrees, then yes it is true
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PLEASE HELP ASAP 30 POINTS ):
ladessa [460]

Answer:

c (0,-4)

Step-by-step explanation:

-5x+y = -4

4x - 4y =16

Solve the first equation for y since we are using substitution.

-5x+y = -4

Add 5x to each side

-5x+5x+y = -4+5x

y = 5x-4

Substitute this equation y = 5x-4 into the second equation.

4x -4(5x-4) = 16

Distribute the -4

4x - 4(5x) -4(-4) = 16

4x-20x +16 = 16

Combine like terms

-16x +16 =16

Subtract 16 from each side

-16x+16-16 = 16-16

-16x =0

Divide by -16

x=0


But we still need to find y

y = 5x-4

y = 5(0) -4

y = -4

5 0
3 years ago
Evaluate the following expression.<br> 3×9+10× <br> {36}{6} <br> ​
Misha Larkins [42]
Hello there.

<span>3×9+10× 

Answer: 36</span>
3 0
2 years ago
How to find the area only of a triangle
strojnjashka [21]
Measure 2 sides, then multiply them, and divide by 2.
6 0
3 years ago
A 9cm wife cross section pipe has a height of 13cm . What is the volume of the pipe
rjkz [21]
I think you meant "wide." :) Since it is a pipe, you should know that it is the shape of a cylinder. Therefore, the formula would be: πr^2h. Substitute the height for h. (π(4.5)^2(13). Since it's 9 cm wide total, divide it by 2 to get the radius (part of formula), which is 4.5 So multiply π times 4.5^2 (which equals 20.25) times 13. This all will equal 826.605. You can simplify this decimal to 827. Therefore, the volume is 827 cm^3.
7 0
3 years ago
Please hurry Thank you
miskamm [114]
I believe the answer is true.
8 0
3 years ago
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