Ellie buys a mobile phone in spain for €352.50. Her brother jack buys an identical phone from japan for ¥39856. Using exchange r
ates £1 = €1.41, £1 = ¥188. Which country is the mobile phone cheaper
2 answers:
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Answer:
The correct option is D.
Step-by-step explanation:
Domain is the set of all posible
The volume of a rectangular prism is
where,
Dimensions can not be negative. So, the width and volume are always positive.
From the graph it is noticed that
In interval , width and volume is negative, so
interval is not the domain.
In interval (-5,0), width is negative, so (-5,0) interval is not the domain.
In interval (0,3), volume is negative, so (0,3) interval is not the domain.
In interval , width and volume is negative, so
interval is not the domain.
Therefore the correct option is D.
Answer:
First, we need to know how to calculate the area and the permiter of a rectangle.
To calculate the area, we multiply base by height and to calculate the perimeter, we sum all sides.
Knowing this, we can say that the area is 3x * (x+5) and the perimiter is 3x + 3x + x + 5 + x + 5, as we know both are the same, we write it as an equation:
Now we solve the equation:
As the negative result doesn't have sense, we only pick the second one: 1.
If x = 1, then area would be 3*6 = 18 square inches and perimeter 3+3+6+6 = 18 inches