3 years ago

Can someone help me plz

1 answer:

5 0

Answer:the answer is 420 :)

Step-by-step explanation:

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Dafna1 [17]

Geometric mean= √ ( 1/2 X 2/5 )
= 1/√5

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2 years ago

Natalka [10]

Answer: 12x^3 y^6

Step-by-step explanation: Have a nice day! -Lily ^-^

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2 years ago

LekaFEV [45]

I'm pretty sure both B and C equal 12 as well
Since the triangle equals 180 and the angels are all congruent

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3 years ago

eduard

the cost of one soccer ball is 150/6 or 25 dollars.

4 0

2 years ago

attashe74 [19]

The sequence is geometric, so

$a_n = r a_{n-1}$

for some constant r. From this rule, it follows that

$a_3 = r a_2 \implies 20 = 2r \implies r = 10$

and we can determine the first term to be

$a_2 = r a_1 \implies 2 = 10 a_1 \implies a_1 = \dfrac15$

Now, by substitution we have

$a_n = r a_{n-1} = r^2 a_{n-2} = r^3 a_{n-3} = \cdots$

and so on down to (D)

$a_n = r^{n-1} a_1 = 10^{n-1} \cdot \dfrac15$

(notice how the exponent on r and the subscript on a add up to n)

4 0

1 year ago