Can someone answer this ?
2 answers:
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Answer:
A model with 4 shaded sections and 6 unshaded sections.
A model with 40 shaded sections and 60 unshaded sections.
Step-by-step explanation:
Required:
Which models shows 40%
(a) 4 shaded and 6 unshaded
First, we calculate the total sections
The percentage of the shaded section is:
(b) 40 shaded and 60 unshaded
First, we calculate the total sections
The percentage of the shaded section is:
(c) 2 shaded and 8 unshaded
First, we calculate the total sections
The percentage of the shaded section is:
<em>Hence, (a) and (b) shows 40%</em>
It can be factorised as
so the solutions are
x= 10 and x = -9
so the sum of the solutions is 10 -9 which is 1
so the solutions are
x= 10 and x = -9
so the sum of the solutions is 10 -9 which is 1