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jeka57 [31]
3 years ago
8

How do I figure out these questions?

Mathematics
2 answers:
Lostsunrise [7]3 years ago
5 0
1) Sally is 1.63 m tall and Anna is 1.53 m tall
2) 1/5 of $50 is $10 (just divide 50 by 5)
10% of $40 is $4 (multiply 40 by 0.1)
ollegr [7]3 years ago
5 0
1) you should let x be Anna's height and (x+0.1) will be sally's height
.
x + x + 0.1 =3.16
2x=3.16-0.1
2x=3.06
x=3.06/2
X=1.53
So anna's height is 1.53m and sally's is 1.53+0.1=1.63m.

This is how u do it hope it helped:)
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horsena [70]

Answer:

Hence the function only :

Secx and Cosx functions are symmetric about y-axis

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Step-by-step explanation:

Given:

Six circular function as :

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Which functions are symmetric about the y-axis

Solution:

<em>The function is said to be symmetric about the y-axis is given by</em>

<em>f(x)=f(-x)</em>

Now

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So put x=-x

f(-x)=sin(-x)

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Hence f(x)≠f(-x)

This function is not symmetric about y-axis

2)For y=cosx ,i.e. f(x)=cosx

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=cosx

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3)For y=tanx     i.e   f(x)=tanx

put  x=-x

f(-x)=tan(-x)

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This function is not symmetric about y-axis

4)For y=cotx  i.e.  f(x)=cotx

Using above observation,

f(x)≠f(-x)

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f(x)=f(-x)

This function is symmetric about y-axis.

6) for y=cosecx

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3 years ago
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