Among the applicants in a certain vacant post , it is found that 70 are qualified in statistics , 60 are in computer & 50 in English . Also , 30 are qualified in statistics & computer , 20 are qualified in computer & English & 25 in english & statistics . If 20 are qualified in all three subjects & each are qualified in at least one subject , then ; a. represent the information in a Venn- diagram
b. find the number of applicants who are qualified only in computer .
c. find total number of applicants​

add the table and i will answer correctly

step-by-step explanation:

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204