The sales tax for an item was and it cost before tax. Find the sales tax rate. Write your answer as a percentage

The sales tax for a item was $6.20 and it cost $310 before tax. Find the sales tax rate. Write your answer as a percentage.

The tax rate in this case is 0.02 applied on that good which amounts to $6.20.

Explanation:

In a tax rate, the tax rate is the proportion at which a business or individual is saddled. There are a few techniques used to introduce a duty rate: statutory, normal, negligible, and successful.

These rates can likewise be introduced utilizing various definitions applied to a duty base: comprehensive and restrictive.

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.