Someone plz answer this one! triangle cde and triangle cfg are similar right triangles. which proportion can be used to show that the slope of ce is equal to the slope of cg? a) 4 − 3 6 − 2 = 6 − 3 9 − 2 b) 4 − 2 6 − 3 = 9 − 3 6 − 2 c) 4 − 2 6 − 3 = 6 − 2 9 − 3 d) 6 − 3 4 − 2 = 6 − 2 9 − 3

C

Step-by-step explanation:

4 − 2

6 − 3

=  

6 − 2

9 − 3

Use the slope formula to set-up the proportional relationship equation.

slope =  

y2 − y1

x2 − x1

.

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

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i think it would be 42cm