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2 years ago

13

The second angle in a triangle is one third as large as the first. The third angle is two thirds as large as the first. Find the

angle measures.

1 answer:

Zielflug [23.3K]2 years ago

6 0

First angle 90 degrees

Second angle 30 degrees

Third angle 60 degrees

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Determine if the given sequence is an arithmetic sequence. If it is, identify the common difference.

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Answer:

Is this an arithmetic sequence?

Yes.

Is there a common difference and if so, what is it?

Yes, there is a common difference : 1

The common difference is 1

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3 years ago

Given △RST≅△LMN, m∠R=65°, and m∠M=70°, what is the measure of ∠T?

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3 years ago

Read 2 more answers

A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third t

scoray [572]

Answer:

4

Explanation:

$a_1=8,a_7=0$

Since the third term is the sum of the two previous terms

$a_3=a_2+a_1$

$a_7=a_6+a_5$

$a_7=a_5+a_4+a_4+a_3$

Continuing in like manner

$a_7=5a_3+3a_2$

Since $a_3=a_2+a_1$

$a_7=5(a_2+a_1+3a_2$

$a_7=5a_2+5a_1+3a_2$

$a_7=8a_2+5a_1$

Recall: $a_1=8,a_7=0$

$0=8a_2+5*8$

$8a_2=-40$

$a_2=-5$

The sequence is therefore:

8,-5,3,-2,1,-1,0

The sum of the seven numbers is 4.

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3 years ago

Simplify this expression <br> 7z+5+6z-9

Simora [160]

Answer:

7z + 5 + 6z - 9 (Add 7z and 6z, subtract 9 from 5)

<em>13z - 4 </em>(Can't be simplified further)

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2 years ago