Donald plays with his wood cubes and decides to make pyramids: p1: 3, p2: 6, p3: 10. he carries on with his pyramids and labels following the same pattern.

a)after making p4, donald realises that he only has 12 wood cubes left. how many more cubes will he need to make p5?
b)work out the number of cubes needed to make p10.

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

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answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.