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​

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: