IGCSE MATHS Doubts

[Ghost Of Highbury]

If we want to calculate lower and upper bound of lets say 6-4.
For upper bound we minus 6.5 minus 3.5 and for lower bound 5.5 - 4.5?

Thanks

explain clearly plz.

wat is "6-4" do u mean "6.4" ??

wat do u mean by " minus 6.5 minus 3.5"

[Adzel]

If we want to calculate lower and upper bound of lets say 6-4.
For upper bound we minus 6.5 minus 3.5 and for lower bound 5.5 - 4.5?

Thanks

+ 0.5 to upper bound -->  6.5 - 4.5

- 0.5 to lower bound  -->  5.5 - 3.5

[Baladya]

explain clearly plz.

wat is "6-4" do u mean "6.4" ??

wat do u mean by " minus 6.5 minus 3.5"

K Adzel Thanks

Aodi, my bad

[Adzel]

attached.

PQS = 80 degree.

Angle PQS = Angle PRS

the chord circumference rule.

QPR = 180 - 80 - 33 = 67 degree. (Angle Sum property)

PSQ => PXS = 147 (180-33). PSX = 180 - 147 - 21 = 12 degree. 

Thanks A@di...

[Ghost Of Highbury]

ur welcome

[Vin]

ALways ..

multiplication / addition
LB = LB + LB
LB = LB* LB
UB =UB + UB
UB = UB*UB

subtraction/divsion
LB = LB -UB
LB = LB/UB
UB = UB - LB
UB = UB/LB

correct me if im wrong..

[thenewkid™]

may/june 2009 p2 q18 variant 1

and

 oct/nov 2009 p2 q4 variant 1

pls Thanks

[Adzel]

may/june 2009 p2 q18 variant 1

and

 oct/nov 2009 p2 q4 variant 1

pls Thanks

Ans Q18 (a)   1080           3³
                  ------- =  -------- = 320 cm3
                      s             2³

          
            (b)      s             3²
                  ------- =  --------  = 567 cm2
                    252            2²  
 

[Ghost Of Highbury]

may/june 2009 p2 q18 variant 1

and

 oct/nov 2009 p2 q4 variant 1

pls Thanks

ans 4)     5x^1.5
         ----------------
                 8
        -----------------
                x^-5/2
        -------------------
                  2

X



Answer : 1.25x⁴

[Adzel]

Q11 (b)

Q14 (b)

Q19 (b)

Q22 (b)

+explaination please...thanks

[Vin]

Q11 (b)

Q14 (b)

Q19 (b)

Q22 (b)

+explaination please...thanks

gimme 2 mins ..

[soualhi1]

So we prioritize the first instruction that comes?

Like, when it is B' U A, is it true we do the B' first before the A?

[Adzel]

gimme 2 mins ..

30 mins past and no reply 

[Adzel]

So we prioritize the first instruction that comes?

Like, when it is B' U A, is it true we do the B' first before the A?

True. 

[Fastal]

So we prioritize the first instruction that comes?

Like, when it is B' U A, is it true we do the B' first before the A?

isnt A U B' the same as B' U A