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3 years ago

7. Does any rectangle rotate onto itself in less than a half-turn?

Mathematics

2 answers:

MAVERICK [17]3 years ago

8 0

Sure. If the rectangle is a square, then
it rotates onto itself in only 1/4 turn.

Galina-37 [17]3 years ago

6 0

I believe so because a full turn is 360 degrees correct so a half turn would be 180 and if you turn the rectangle 90 degrees twice it will be the cover the original rectangle but it would take the full half turn. so it depends on what the want if they mean less and it cant be 180 than the answer is no but if it can be on the half way marker it should be yes

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The radius of a circle is 6. Using T, which equation expresses the ratio of the circumference of the circle to the circle's diam

Liono4ka [1.6K]

Answer:

Option (B)

Step-by-step explanation:

The given question is incomplete; here is the complete question.

The radius of a circle is 6. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter?

A) C/6 = π

B) C/12= π

C) C = 6πr

D) C = 12πr

Formula to get the circumference of the circle is,

C = 2πr = π × D

Where C = circumference of the circle

D = Diameter of the circle

By dividing with D on both the sides of the formula,

$\frac{\text{C}}{\text{D}}=\pi$

Since, diameter 'D' = 2r,

$\frac{\text{C}}{\text{2r}}=\pi$

$\frac{\text{C}}{2\times 6}=\pi$

$\frac{\text{C}}{12}=\pi$

Therefore, equation given in Option (B) will be the correct expression.

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2 years ago

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So, Christian has a collection of 18 shark teeth. He identified them as 6 tiger shark teeth, 8 sand shark teeth, and the rest as

svetoff [14.1K]

Answer:

So, the question means that if we add the number of tiger shark teeth and the sand shark teeth and subtract it from the total number of teeth, we will get the number of bull shark teeth. And, the number of bull shark teeth is 4.

Step-by-step explanation:

So, the question means that if we add the number of tiger shark teeth and the sand shark teeth and subtract it from the total number of teeth, we will get the number of bull shark teeth.

Since Christian has 18 shark teeth, and 6 are tiger shark teeth, 8 are sand shark teeth and the rest are bull shark teeth.

Let x represent the number of bull shark teeth.

So, total number of shark teeth = number of tiger shark teeth + number of sand shark teeth + number of bull shark teeth.

18 = 6 + 8 + x

18 = 14 + x

subtracting 14 from both sides, we have

18 - 14 = 14 - 14 + x

4 = 0 + x

4 = x

x = 4

So, the number of bull shark teeth is 4.

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2 years ago

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tia_tia [17]

Answer:

10) 44° (nearest degree)

11) 136.6 units² (nearest tenth)

12) 47.8 units² (nearest tenth)

Step-by-step explanation:

Please see the attached pictures for the full solution.

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3 years ago

40 points! Brainliest for most helpful answer!

telo118 [61]

Answer:

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Step-by-step explanation:

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2 years ago

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Genrish500 [490]

Answer: x=4

Step-by-step explanation:

Subtract 6x from both sides.

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−x+3−3=−1−3

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Step 3: Divide both sides by -1.

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2 years ago

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