THIS QUESTION HARD BRU HELP PLS

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HARD WORDED QUESTION

It's number 7

[viscid sail]

a=-2

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How you know

Explain pls bro

[viscid sail]

c-a is range

as ci the biggest number

and a is the smallest

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Yes

[viscid sail]

b is the median

b=4

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How you know it is?

[viscid sail]

because median is n+1/2=

3+1/2

4/2

=2nd number in the list

which is b

so b is 4

[prisma pine]

smart guy even i wouldnt have known that smh

[viscid sail]

ty!!

[halcyon heart]

OK bet

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Fr

[viscid sail]

c-a=12 (Range) and c+a=8 so c-a-(c+a)=12-8

c-a -c -a =4 and -2a =4 a=4/-2 =-2

[prisma pine]

yeah deffo not getting that smh

[halcyon heart]

OK bet

How you get c

[viscid sail]

just substitute

into c-a= 12 THEN c--2=12

c+2=12

c=12-2

c=10

[halcyon heart]

OK bet

Preciate the help bro