2 years ago

Help me !! Accidentally checked in

Mathematics

2 answers:

irga5000 [103]2 years ago

8 0

Answer: a) 27

Step-by-step explanation:

$81^{\frac{3}{4}}=(3^4)^{\frac{3}{4}}=3^{\frac{12}{4}}=3^3=3\cdot 3\cdot 3=\boxed{27}$

Aliun [14]2 years ago

6 0

Answer:

27 is correct.

Step-by-step explanation:

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Step-by-step explanation:

At first we must keep in mind that two triangles are similar when they have same angle configuration, that is, each pair of angles is congruent. If $\triangle$ ABC and $\triangle$ DEF, then $\angle A \equiv \angle D$ and $\angle B \equiv \angle E$ . Hence, $\angle D = 75^{\circ}$ and $\angle E = 20^{\circ}$ .