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Damm [24]
4 years ago
7

the bookstore has 6 shelves of books about animals. there are 30 books on each shelf. how many books about animals does the book

store have
Mathematics
1 answer:
Vikentia [17]4 years ago
6 0
It should be 5 on each shelf.
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The number of people playing a new phone app game triples every month. When the app first launched, 800 people started playing t
NeTakaya

Answer:

a_t=ar^{t-1}

t=6 months

Step-by-step explanation:

We are given that the number of people playing a new phone app game triples every month

When the app first launch , the number of people started playing the  game  right away=800

According to question

The number of peoples are currently playing the game=194,400

We solve by using the formula of  geometric series because we get a geometric series pattern

The number of people playing the game when app game launch=800

The number of people playing game after one month=2400

800,2400,7200,........,194,400

a_1=800,a_2=2400,a_3=7200,a_t=194,400

We are finding common ratio

\frac{a_2}{a_1}=\frac{2400}{800}=3

\frac{a_3}{a_2}=\frac{7200}{2400}=3

Hence, the common ratio is 3 therefor nth term of  G.P

a_t=ar^{t-1}

a=800,r=3,a_t=194,400

Substitute the values then we get

194,400=800(3)^{t-1}

\frac[194400}{800}=(3)^{t-1}

243=3^{t-1}

3^5=3^{t-1}

When base are same on both side then the power are equals

Therefore, t-1=5

t=5+1=6

Hence, when there are 194,400 people currently playing the game then

the number of months ,t=6 that have passed since the app launched.

7 0
3 years ago
Are 12/16 and 6/9 equivalent? Explain your answer.
Reptile [31]

Answer:

No

Step-by-step explanation:

Times the numerator and denominator by 2. 6 does turn into 12, but 9 doesn't turn into 16. Therefore, these fractions are not equivalent.

8 0
3 years ago
Please help! I will give brainliest!
Lunna [17]

Answer:

2nd option

Step-by-step explanation:

trinomial is 2x² + 10x -4 = 0

a = 2

b = 10

c = -4

(-b±√b²-4ac) / 2a

= [-10±√100-4(2)(-4)] / 2

= (-10±2\sqrt{33}) / 4

= (-5+\sqrt{33})/2, = (-5-\sqrt{33})/2  (simplified)

3 0
3 years ago
2(n+2)=10 solve for n
astra-53 [7]

Answer :

<em>\:  \:  \:  \:  \:  \: 2(n + 2) = 10 \\  =  > 2n + 4 = 10 \\  =  > 2n = 10 - 4 \\  =  > 2n = 6 \\  =  > n =  \frac{6}{2}  \\   = > n = 3</em>

5 0
3 years ago
What is the measure of ADB?
ollegr [7]
I’m thinking it’s c if I’m incorrect I’m sorry
8 0
3 years ago
Read 2 more answers
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