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Jlenok [28]
3 years ago
14

Solve. 3a - 7 = 3+0 The solution is a

Mathematics
1 answer:
Sliva [168]3 years ago
6 0

Answer:

a=4

3a=12

a=12/3

a=4 is the solution

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Are triangles DEF and LNM similar if DF = 8 and LM = 4?
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We Cannot conclude that triangles DEF and LNM are similar if DF = 8 and LM = 4.

<u>Solution:</u>

Given that for two triangle DEF and LNM, DE = 8 and LM = 4.

To say that two triangles are similar the provided information is not complete.  

Two triangles DEF and LNM , will be similar if there corresponding sides are in ratio which means

\frac{\mathrm{DE}}{\mathrm{LM}}=\frac{\mathrm{EF}}{\mathrm{NM}}=\frac{\mathrm{EF}}{\mathrm{NM}}

But we have only information of  \frac{\mathrm{DE}}{\mathrm{LM}}=\frac{8}{4}=2

But do not have any information regarding two remaining ratios that are  \frac{\mathrm{EF}}{\mathrm{NM}} \text { and } \frac{\mathrm{EF}}{\mathrm{NM}}

Hence cannot conclude that triangles DEF and LNM similar if DF = 8 and LM = 4

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