For δabc, which transformation composition is commutative?
a) rotate 30 degrees and then translate 2 units down
b) translate 5 units to the right and rotate 90 degrees
c) reflect across the y-axis and then rotate 90 degree eliminate
d) reflect across the y-axis and then reflect across the x-axis.

Step-by-step explanation:

We are asked  which transformation composition is COMMUTATIVE i.e. we are asked to find that the resultant figure is independent of the operations applied to it  in any order.

Hence, option: D is correct. (reflect across the y-axis and then reflect across the x-axis.)

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

related questions

i belive those are the ones that are under 90 degreese.