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3 years ago

Which of the following best describes rotational symmetry

Mathematics

1 answer:

Gala2k [10]3 years ago

7 0

Answer: B

Step-by-step explanation:

A best describes the quality of symmetry, not specifically rotational symmetry.

C applies to that of A.

D applies to flipping an image across an axis.

B specifically outlines the symmetry of an object when rotated, thus B would be the most precise answer.

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Which of the following describes the relationship between the area of a rectangle and its width, as width varies and length stay

Aleks [24]

C because if width is 2 and length is 3 area is 6 but if width is 1 ad length is 3 area is 3

7 0

3 years ago

Determine if the side lengths could form a triangle. Use an inequality to prove your answer.

podryga [215]

9514 1404 393

Answer:

a) no

b) yes

c) maybe (no)

Step-by-step explanation:

There are two versions of the triangle inequality. One requires ...

a + b > c

for any triple of side measures a, b, c.

The other allows ...

a + b ≥ c

which admits "triangles" that have zero height and look like line segments.

Most questions asking "do these lengths form a triangle" are concerned with the "greater than" case, and disallow the "or equal to" case.

$16+21=37\ngtr39\qquad\text{not a triangle}$

$27+34=61>58\qquad\text{could be a triangle}$

$9+29=38\ge38\qquad\text{could be a triangle if "equal to" is allowed}$

7 0

3 years ago

Pls help find x in both

RUDIKE [14]

Answer:

Step-by-step explanation:

In similar triangles, corresponding sides are in same ratio

$\frac{28}{24} = \frac{3x-9}{x +8}\\\\\frac{7}{6}=\frac{3x-9}{x+8}\\$

Cross multiply,

7*(x + 8) = 6*(3x -9 )

7x + 7*8 = 6*3x - 6*9

7x + 56 = 18x - 54

56 = 18x - 7x -54

56 = 11x - 54

11x - 54 = 56

11x = 56 +54

11x = 110

x = 110 /11

x = 10

PR = 3x -9

= 30 - 9

PR = 21

8 0

3 years ago

34 is a multiple of 4.<br> true or false?

Alex73 [517]

False

Multiples of 4:

4,8,12,16,20,24,28,32,36

8 0

3 years ago

The mean and median sales prices of new homes sold in the United States in February 2016 were $ 217822 and $ 244614 , respective

anastassius [24]

Answer:

Mean: $217,822

Median: $244,614

Step-by-step explanation:

The mean and median sales prices of new homes sold in the United States in February 2016 were $ 217822 and $ 244614 , respectively.

Mean and median, then the term respectively.

This means that first comes the mean, and then the median.

Mean: $217,822

Median: $244,614

6 0

3 years ago

Read 2 more answers