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montgomerykarloxc24x
04.12.2019 •
Mathematics
Can you solve step by step
6 [4-(4x-7)]+7x
Solved
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Ответ:
=6(4-4x+7)+7x
Use distributive property for 6(4-4x+7) to get
=6(4)-6(4x)+6(7)+7x
=24-24x+42+7x
Combining like terms
=-24x+7x+24+42
=-17x+66 is your final answer. Hope it help!
Ответ:
However, I will tell you how to solve this and you can apply using the triangle you have.
For the first part:
To get the perimeter, all you have to do is sum up the three given side lengths.
For the second part:
You have the expression of the perimeter from the first part. Now substitute with x = 10 in the expression to get the value of the perimeter
Example:
Suppose that we have a triangle whose side lengths are as follows:
AB = 2x+3
BC = x-9
CA = x
For part a:
perimeter = AB + BC + CA
perimeter = 2x+3 + x-9 + x
perimeter = 4x - 6 units
For part b:
At x = 10:
perimeter = 4x - 6
perimeter = 4(10) - 6
perimeter = 34 mm
Hope this helps :)