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horsena [70]
3 years ago
12

Can someone help me on this question if you know the answer.

Mathematics
2 answers:
torisob [31]3 years ago
7 0
Answer I think is 35.5
S_A_V [24]3 years ago
3 0

Answer     32

Step-by-step explanation:

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We are given a compound known to be Sodium Bromine (NaBr). This compound has a molecular weight of
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NaBr=23+80= 103 g/mol

Assuming if we have 1 mol of NaBr, then we have 80 g of Bromine (Br). Calculating its percent composition in the total NaBr compound, we get

%Br= (80/103)*100=77.7%

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How can you solve 3x=9by multiplying each side by the reciprocal
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3x * 1/3 = 9* 1/3

 

x = 3    is the answer

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After 6 months the simple interest earned annually on an investment of $3000 was $811. Find the interest rate to the nearest ten
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4 years ago
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
The data for a spinner is shown below.
Sav [38]

Answer:

75%

Step-by-step explanation:

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