Pls help A rectangular floor tile is shown it dimensions are given to the nearest 0.1 metres the tile is only able to sustain maximum pressure of 200 newtons per square metre correct to the nearest 5N/m² given that pressure=Force area. Work out the maximum force in newtons that can safely be applied to the tile.
Look at the image uploaded

Step-by-step explanation:

Force = pressure * area

= 200 * 3.7

= 740 N

maxium force = 785.2

Step-by-step explanation:

1.6m lower bound = 1.55

2.3m lower bound = 2.25

lower bound area = 1.55×2.25=3.4875

lower upper bound = 1.65×2.35=3.8775

pressure upper bound=202.5

pressure lower bound=197.5

202.5×3.8775=785.19375

197.5×3.4875=688.78125

force upper bound = 785.2

force lower bound = 688.8

gets you full marks

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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