A group of employees were asked to complete a survey . the survey asked employees if they preferred working from home or working in the office and if they preferred making coffee at home or buying coffee the results are partially shown in the table 60% of the employees who preferred coffee at home , prefer to work in the office

57% (rounded) of the employees who prefer to buy coffee prefer to work in the office

what is the value of a•b?

enter your answer in the box

a•b= __

answer: no

step-by-step explanation:

his chances of getting a coin of higher value is 4/19

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15