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3 years ago

Jeremiah Holmes

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

6 0

Answer:

- 508

Step-by-step explanation:

The n th term of an arithmetic sequence is

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 28 and d = - 34 - (- 28) = - 34 + 28 = - 6, thus

$a_{81}$ = - 28 + (- 6 × 80) = - 28 - 480 = - 508

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ًُ]ًٍُِ]ًًًًٍُُِِ]]ِ

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1. $\overline {TU}$

2. Given

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The two column proof is presented as follows;

Statement ${}$ Reason

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2. $\overline {ST}$ ≅ $\overline {UR}$ ${}$ Given

3. $\overline {RT}$ ≅ $\overline {RT}$ ${}$ Reflexive property

4. ΔRST ≅ ΔTUR ${}$ SSS rule of congruency ${}$

The Side-Side-Side rule of congruency states that if three sides of one triangle are congruent to three sides of another triangle then both triangles are congruent.

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