James gave Robert half a candy bar. Robert gave his sister half of what he had. What fraction of the whole candy bar did Robert
1 answer:
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The simplified expression of is
The expression is given as:
Expressions raise to power 0 is 1.
So, we have:
Apply the law of indices to expression with common base
Evaluate the sum and difference
Remove the bracket
Hence, the simplified expression of is
Read more about exponents at:
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note that gradient = at x = a
calculate for each pair of functions and compare gradient
(a)
= 2x and
= - 1
at x = 4 : gradient = 8 and - 1 : 8 > - 1
(b)
= 2x + 3 and
= - 2
at x = 2 : gradient = 7 and - 2 and 7 > - 2
(c)
= 4x + 13 and
= 2
at x = - 7 : gradient = - 15 and 2 and 2 > - 15
(d)
= 6x - 5 and
= 2x - 2
at x = - 1 : gradient = - 11 and - 4 and - 4 > - 11
(e)
y = √x =
= 1/(2√x) and
= 2
at x = 9 : gradient = and 2 and 2 >