2 years ago

What is the cofficient in the expression 8x^2+1?

Mathematics

1 answer:

sergeinik [125]2 years ago

7 0

Answer:

Step-by-step explanation:

Answer is 8

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2 years ago

What is the formula for the nth term of the given sequence 100, 20, 4, …

Naily [24]

Answer:

$a_n=100 \left(\dfrac15\right)^{n-1}$

Step-by-step explanation:

General equation of geometric sequence: $a_n=ar^{n-1}$

Given:

a₁ = 100
a₂ = 20
a₃ = 4

$\implies a_1=a=100$

$\implies a_2=100 \cdot r=20$

$\implies a_3=100 \cdot r^2=4$

Common ratio:

$r=\dfrac{a_3}{a_2}=\dfrac{4}{20}=\dfrac15$

Therefore:

$a_n=100 \left(\dfrac15\right)^{n-1}$

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1 year ago

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2 years ago

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Dmitriy789 [7]

Answer:

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You go to the pet store and buy a goldfish which sells for $2.00. The store charges 9% sales tax. How much tax will you pay?

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Answer:

tax=$0.18

Step-by-step explanation:

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