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1 year ago

A quadrilateral has rotational symmetry of order 2 and no line of symmetry. What is the name of this quadrilateral?

Mathematics

2 answers:

tekilochka [14]1 year ago

7 0

Answer:

C

Step-by-step explanation:

A quadrilateral has rotational symmetry of order 2 and no line of symmetry.

A parallelogram has no lines of symmetry because it is impossible to draw a line through the center of any parallelogram that divides the figure into two equal halves that are mirror images of each other.

Fed [463]1 year ago

6 0

Answer:

Step-by-step explanation:

paralallegram can be anything with parrell lines

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Write the solution to the inequality in set - builder notation: 5r + 8 < 63

Leni [432]

First, the inequality needs to be solved. The first step is to subtract 8 from both sides of the inequality, leading to 5r < 55. Dividing 5 out from both sides, this will leave r < 11. Next, to form a set notation, the inequality is written in such form: {r | r < 11}.

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3 years ago

What is the range of the given data set? 15,16,17,18,19,20,21

NemiM [27]

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3 years ago

Which expressions are equivalent to 2 to the 11 power

STatiana [176]

$\text{Hey there!}$

$\text{Which expressions are equivalent to}\bf{ \ 2^{11}}?$

$\bf{2^{11} = 2\times2\times2\times2\times2\times2\times2\times2\times2\times2\times2}$

$\bf{2\times2=4}\\\bf{2\times2=4}\\\bf{2\times2=4}\\\bf{2\times2=4}\\\bf{2\times2\times2 = 8}\\\bf{4\times4\times4\times4=16\times16=256}\\\bf{256\times8=2,048}\\\\\boxed{\boxed{\bf{Your\ answer: 2,048}}}\checkmark$

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2 years ago

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ella [17]

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2 years ago

In an apartment complex with 28 units, 19 of the renters keep a pet. What percentage does not keep a pet?

Aleks04 [339]

If 19 out of 28 renters keep a pet, there are $28-19 = 9$ renters who don't keep a pet.

Whenever you have a subset of some set, and you want to know which percentage of the set the subset represents, you simply have to compute

$\dfrac{\text{number of elements in the subset}}{\text{number of elements in the set}}\times 100$

So, in your case, you're wondering what percentage of 28 does 9 represent. So, the formula becomes

$\dfrac{9}{28}\times 100 = 0.32\overline{142857}\times 100 = 32.\overline{142857} \approx 32.14\%$

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2 years ago