3 years ago

How many lines of symmetry does the shape have?

Mathematics

2 answers:

givi [52]3 years ago

8 0

Answer:

the answer is two

Step-by-step explanation:

top left to bottom right and top right to bottom left

nlexa [21]3 years ago

3 0

I’m pretty sure 4. I could be wrong but it has 4 angles, so it could be.

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71 dvided by 50 in decimals

QveST [7]

Answer:

1.42

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Step-by-step explanation:

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2 years ago

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Dave surveyed 80 7th-graders and 90 8th-graders. He found that about 75% of the 7th-graders like pop music, while 80% of the 8th

dimaraw [331]

<u>8th Grade: </u>90 x 0.80 = 72

<u>7th Grade:</u> 80 x 0.75 = 60

Conclusion: 8th Graders like pop music more because 72 out of the 90 in 8th grade Dave surveyed enjoy it, compared to the 60 out of 80 in 7th grade that enjoyed it.

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2 years ago

The parabola x = y² - 9 opens:

irinina [24]

This is what it looks like. It opens to the right.

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3 years ago

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Show that x+y:x-y=3:2

ycow [4]

We have,

x+y:x-y=3:2

To prove that, x+ y : x - y = 3:2.

x+y=3

And,

x+y = 2

Adding (1) and (2), we get

x+y+x-y=3+2

⇒2x=5

⇒ x =

Put x = in (1), we get

+y=3

⇒ y=3-=

x+y:x-y=

=3:2

So, x+y:x-y=3:2.

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2 years ago

Determine the graph of the sinusoid with amplitude of 4 and period of 2π/3

DiKsa [7]

Answer:

Option b.

y = 4 sin (3x)

Step-by-step explanation:

To quickly solve this problem, we can use a graphing tool or a calculator to plot the equation.

Please see the attached image below, to find more information about the graph

The period is

T = 2π/3

This means the frequency in radians is

W = 2π/T = 3

The equation is either:

y = 4 cos(3x)

y = 4 sin (3x)

The correct answer is

Option b.

y = 4 sin (3x)

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3 years ago