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NISA [10]
2 years ago
9

Which explicit formula describes the sequenceuse the picture for the full question​

Mathematics
1 answer:
Murrr4er [49]2 years ago
7 0

Answer:

  • A. aₙ = (2/7)ⁿ⁻¹

Step-by-step explanation:

<u>According to sequence we observe:</u>

  • the first term is a₁ = 1
  • the common ratio is r = 2/7

<u>Equation of nth term of GP:</u>

  • aₙ = a₁r°⁻¹

<u>Substitute to get:</u>

  • aₙ = 1*(2/7)ⁿ⁻¹ = (2/7)ⁿ⁻¹

Correct choice is A

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Can someone plz help me on this plz I beg u plz
JulsSmile [24]
<h3>Answer:  25w+200 > 750</h3>

==========================================================

Explanation:

He starts off with 200 cards. Then he adds on 25w more cards for each week (w). Overall, he'll have 200+25w cards

We can think of it like this:

  • After 1 week, he adds on 25*1 = 25 cards
  • After 2 weeks, he adds on 25*2 = 50 cards total
  • After 3 weeks, he adds on 25*3 = 75 cards total
  • After 4 weeks, he adds on 25*4 = 100 cards total, and so on.
  • After w weeks, he adds on 25w cards total

So that's another way to see where the 25w comes from.

The expression 200+25w is the same as 25w+200. This is because we can add two numbers in any order.

------------

Since he wants to know when he'll have more than 750 cards, this means we set 25w+200 greater than 750.

That's how we get to the answer of 25w+200 > 750

Notice how there isn't a line under the inequality sign. We aren't using the "greater than or equal to" symbol here. We want to know when the cards gets over 750, but we don't want to know when it's equal to 750.

5 0
3 years ago
Brenna needed 8 gallons of gas last week. This week, Brenna ended up needing 50% less. How much gas is that? Please answer quick
algol [13]

Answer:

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Step-by-step explanation:

6 0
2 years ago
Place the expressions that are equivalent under the corresponding expression in the table.
serg [7]

Answer:

Step-by-step explanation:20

20  130  3  8.12 - 1) 2:2  12-1  21=-11 # 1 - 2 1212 II + 3) 472 I + 3 2(1 - 1) -1 2:2 3(12 - 1) 32 – 23– 3+.

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3 years ago
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lorasvet [3.4K]

Answer:

Answer is \frac{4}{3}

Step-by-step explanation:

To find the interval of x. Use our equations to equal each other.

-x^2+2x=y,y=0

-x^2+2x=0\\-x(x-2)=0\\-x=0 , (x-2)=0\\x=0 ,2

\int\limits^2_0 {-x^2+2x} \, dx

Integrate.

\frac{-x^3}{3}+x^2\\(\frac{-2^3}{3}+2^2)-[\frac{-0^3}{3}+0^2]\\-\frac{8}{3} +4-0\\-\frac{8}{3}+\frac{12}{3}  =4/3

Using Desmos I have Graphs of both of the equations you have provided. The problem asks us to find the shaded region between those curves/equations.

Proof Check your interval of x.

7 0
2 years ago
0.985 rounded to the nearest tenth
GarryVolchara [31]
They always try to trick you with this.  Remember anything 5 or above would round up, anything 4 and under would round down.  So look for the tenth place.  that's the 9.  The number to the right is 8 which is greater than 5.  That means round up.  You can't round it to 0.1 because that takes it back down.  So you just move it over.  The answer is 1.0.
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3 years ago
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