Edad Xi fi FI hi hi% HI HI% (16-20) 18 10 10 10/205 = 0.049 4,90% 0,49 4,90%

(20-24) 15 15/205 = 0.02731

(24-28) 25 15/205 = 0.121951

(28-32) 55

(32-36) 50

(36-40) 30

(40-44) 20

TOTAL 205

y + 11 = (1/4)(x + 16)

step-by-step explanation:

the answer is  

a.

4,624π mm2

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

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