Can u pls help me with this question
1 answer:
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Answer:
16
Step-by-step explanation:
To solve, we can use an equation finding the average of the siblings'ages.
The complete question in the attached figure
we know that
[area of rectangle]=b*h
b=(x+2)
h=(2x+2)
Area=130 m²
then
130=(x+2)*(2x+2)--------> 2x²+2x+4x+4-130=0--------> 2x²+6x-126=0
the answer Part a)
the equation to find x is
[2x²+6x-126=0]
<span>b.) solve the equation by completing the square</span>
130=(x+2)*(2x+2)
using a graph tool
see the attached figure
the solution is
x=6.58 m
the answer Part b) is
<span>(x + 2)(2x + 2) = 130; x = 6.58 m</span>
we know that
[area of rectangle]=b*h
b=(x+2)
h=(2x+2)
Area=130 m²
then
130=(x+2)*(2x+2)--------> 2x²+2x+4x+4-130=0--------> 2x²+6x-126=0
the answer Part a)
the equation to find x is
[2x²+6x-126=0]
<span>b.) solve the equation by completing the square</span>
130=(x+2)*(2x+2)
using a graph tool
see the attached figure
the solution is
x=6.58 m
the answer Part b) is
<span>(x + 2)(2x + 2) = 130; x = 6.58 m</span>