Mathematics, 30.01.2020 08:47, AM28

If a and b vary directly and a = 6 when b = 4, what will be the value of a when b = 16? 24 18 3/2

Answers: 2

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Answers

Hi!

So let's call the new value of b b2, and the new value of a a2.

So we have a = 6, b = 4, b2 = 16, and a2 = ?

Since 16/4 = 4, we can infer that a · 4 = a2. So..

6 · 4 = 24

The answer is 24

Hope this helps! :)

answered: haleygreene3728

If the function assumes a is multiplied by b, where a = 6 and b = 4, this means the result is 24. We won't change the value result, so if b was multiplied by 4, we need to find 16/4 and this is also 4, so when we multiply this value with 6, it's once again 24. Therefore, the answer is 24. The other options are inaccurate.

answered: Guest

answer:

payment just for service

→

87.12

payment for service including tax

→

94.09

explanation:

service only with 20% tip

→

72.6

(

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

(

100

)

87.12

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

87.12

(

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

100

72.60

14.52

−−−−−−

←

add

87.12

tax

100

87.12

6.97

−−−−−

←

add

94.09

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If a and b vary directly and a = 6 when b = 4, what will be the value of a when b = 16? 24 18 3/2...