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Ainat [17]
3 years ago
8

Help me solve this question please. Thank you

Mathematics
1 answer:
IrinaVladis [17]3 years ago
6 0

Answer:

an = 80. 2^(n-5)

Step-by-step explanation:

r = a6/a5 =160/80 = 2

an = a5. r^(n-5)

= 80. 2^(n-5)

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What is the gcf of 18 and 54​
katrin2010 [14]

Answer:

18 is the GCF

Step-by-step explanation:

Factors of 18: 1, 2, 3, 6, 9, 18

Factors of 54: 1, 2, 3, 6, 9, 18, 27, 54

6 0
3 years ago
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Select the equivalent expression. 2^-4 = ?​
mrs_skeptik [129]

Answer:

1/16

Step-by-step explanation:

This means 1/2x2x2x2  = 1/16

7 0
2 years ago
(GEOMETRY PLS HELP SERIOUSLY) A treasure map says that a treasure is buried so that it partitions the distance between a rock an
pogonyaev

You have coordinates of tree T(16,21) and of rock R(3,2). Let S be a point that denotes treasure. Since treasure is buried so that it partitions the distance between a rock and a tree in a 5:9 ratio, you can state that

\dfrac{\overrightarrow{RS}}{\overrightarrow{ST}}=\dfrac{5}{9}.

Find the coordinates of these vectors:

\overrightarrow{RS}=(x_S-3,y_S-2), \\
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Then

\dfrac{x_S-3}{16-x_S} =\dfrac{5}{9} and \dfrac{y_S-2}{21-y_S} =\dfrac{5}{9}.

Solve these two equations:

1.

9(x_S-3)=5(16-x_S),\\ 9x_S-27=80-5x_S,\\ 9x_S+5x_S=80+27,\\14x_S=107,\\ \\x_S=\dfrac{107}{14}\approx 7.6.

2.

9(y_S-2)=5(21-y_S),\\9y_S-18=105-5y_S,\\9y_S+5y_S=105+18,\\14y_S=123,\\ \\y_S=\dfrac{123}{14}\approx 8.8.

Answer: the treasure are placed at point (7.6,8.8), so the correct choice is B.

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Answer:

D.

Step-by-step explanation:

That is the only answer provided.

7 0
4 years ago
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