<h2>1)</h2>
This must be true for some value of x, since we have a quantity squared yielding a positive number, and since the equation is of second degree,there must exist 2 real roots.
<h2>2)</h2>
Well he started off correct to the point of completing the square.
Well, input and output are the functions so look up how to do functions with input and output and you will get the answer or look at this picture
This is a geometric sequence with an initial term of 27 and a common ratio of 1/3
This just means that each term is 1/3 the term preceding it.
Any geometric sequence can be expressed as:
a(n)=ar^(n-1), a=initial term, r=common ratio, n=term number in this case:
a(n)=27(1/3)^(n-1)
Number of bricks = 350
Cost of 1 brick = 45 p
Cost of 350 bricks = 350 × 45 p = 15750 p
W = 195
2/5D = 4/5W
2/5D = 4/5(195)
2/5D = 156
D = 390
Daniel has 390 marbles.
