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ElegantEmerald
05.03.2021 •
Mathematics
When determining end behavior of a quadratic function, which part of the equation is the most helpful?
f(x)=±ax2+bx+c
f
(
x
)
=
±
a
x
2
+
b
x
+
c
Question 2 options:
the sign of a
the value of a
the sign of b
the value of b
Solved
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Ответ:
L=3w-35
By inputting this into the equation to find the perimeter we get:
2(3w-35)+2w=190
Distribute
6w-70+2w=190
Add like terms
8w=260
Divide both sides by 8
w=32.5
The width is 32.5cm
To find the length input w into the equation for length
L=3(32.5)-35
L=97.5-35
L=62.5
The length is 62.5cm
Check that the solution is correct by inputting the solutions to the perimeter equation
2L+2w=190
2(62.5)+2(32.5)=190
125+65=190
190=190
I hope this helps :)