QUESTION IMAGE
Question
ite two expressions for the perimeter of the figure.
note: the figure is not drawn to scale.
(a) use all three side lengths.
perimeter = □ + □ + □
(b) simplify the expression from part (a).
perimeter = □
Step1: 确定三角形的三边长度
三角形的三边长度分别为 \(5x\)、\(17x\) 和 \(13\)。根据周长的定义,周长是图形所有边长的总和,所以对于(a)部分,我们将这三条边相加。
\( \text{perimeter} = 5x + 17x + 13 \)
Step2: 合并同类项
在(b)部分,我们需要简化(a)中的表达式。首先,合并含有 \(x\) 的项,\(5x\) 和 \(17x\) 是同类项,将它们相加:\(5x + 17x = 22x\)。然后,表达式变为 \(22x + 13\)。
\( \text{perimeter} = 22x + 13 \)
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(a) \( \text{perimeter} = \boldsymbol{5x} + \boldsymbol{17x} + \boldsymbol{13} \)
(b) \( \text{perimeter} = \boldsymbol{22x + 13} \)