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Doss [256]
3 years ago
8

Expand the following expression 5.2(25-3.89x

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
4 0

Answer:

119.6 - 18.824x

Step-by-step explanation:

5.2 x 23 = 119.6

5.2 x 3.62x = 18,824x

= 119.6 - 18.824x

sorry if this doesn't help

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3 years ago
In Covina, California, the population is 47,000. The population increases 18% every year. Determine how long it will take to rea
Alexxandr [17]

Answer: 8.5 years

Step-by-step explanation:

Hi, to answer this question we have to apply an exponential growth function:

A = P (1 + r) t  

Where:

p = original population

r = growing rate (decimal form)  =18/100 = 0.18

t= years

A = population after t years

Replacing with the values given:

192,000 = 47,000 (1+ 0.18)^t

Solving for t:

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ln 4.08 =t (ln 1.18)

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Feel free to ask for more if needed or if you did not understand something.

8 0
3 years ago
-8, 1, 10...<br> n<br> What is a formula for the ninth term of the given sequence
krek1111 [17]

9514 1404 393

Answer:

  a9 = -8 +9(9 -1)

Step-by-step explanation:

The given sequence has a common difference of 1-(-8) = 10-1 = 9, and a first term of -8. The formula for the n-th term of such an arithmetic sequence is ...

  an = a1 +d(n -1) . . . . . first term a1, common difference d

For the parameter of this sequence, a1=-8 and d=9, the n-th term is ...

  an = -8 +9(n -1) . . . . formula for the n-th term

__

Then the formula for the 9th term is ...

  a9 = -8 +9(9 -1)

6 0
3 years ago
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