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3 years ago

How many dominoes are in there??

Mathematics

2 answers:

Vlad1618 [11]3 years ago

4 0

Answer:

150

Step-by-step explanation:

Lyrx [107]3 years ago

4 0

100 dominoes are in there

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There is a rectangle ABCD, with sides AB = CD = 32, and sides and BC = DA = 24. The rectangle is rotated 90° clockwise about C,

Sphinxa [80]

Answer

given,

side of rectangle, AB = CD = 32

BC = DA = 24

rectangle is rotated 90° clockwise about C.

then rotated 90° clockwise about D.

Path traveled by the point A for first rotation will be in circle with radius AC.

$D_1 = \dfrac{\theta_1}{360^0}\times \pi \times {AC}^2$

$AC = \sqrt{24^2+32^2}$

AC = 40

θ₁ = 90°

$D_1 = \dfrac{90^0}{360^0}\times \pi \times {40}^2$

D₁ = 1256.64

For the second rotation Point A will move in circular path with radius of AD

$D_2 = \dfrac{\theta_2}{360^0}\pi {AD}^2$

AD = 24

θ₁ = 90°

$D_2 = \dfrac{90^0}{360^0}\times \pi \times {24}^2$

D₂ = 452.39

total path traveled by the point A

D = D₁ + D₂

D = 1256.64 + 452.39

D = 1709.03

3 0

3 years ago

Kanye wants to make a triangular flower bed using logs with the lengths 3 ft, 4 ft, and 8ft. Can Kanye form a triangle with the

valina [46]

Way 1:
a triangle with sides 3,4,5 will make a triangle. because this isn't 3,4,5 triangle it wont work.

way 2:
By using Heron's formula you can find the area of the flower bed.
s=(a+b+c) ÷2
Area =√s(s-a)(s-b)(s-c)
so, 3+4+8= 15
15÷2 =7.5
√7.5(7.5-3)(7.5-4)(7.5-8)
Now because 7.5-8 gives you a negative number and you can't have a negative number under a square root unless you want to use an imaginary number, it won't form a triangle.

5 0

3 years ago

5x+6y=18and 18x-15y=36 parallel or perpendicular

Katen [24]

Answer:

They are neither parallel nor perpendicular, since slope are different and not related by any equation

Step-by-step explanation:

First arrange them according to general equation: