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astraxan [27]
3 years ago
6

Gabriella invested $73,000 in an account paying an interest rate of 3%

Mathematics
1 answer:
Ivanshal [37]3 years ago
4 0

Answer:

Gabriella will make $61 more than Mila after 5 years

Step-by-step explanation:

Gabriella Data

Principal Amount P= $73,000

Rate r = 3% or 0.03

Compounded continuously

Time t = 5 years

The formula used is: A=Pe^{rt}

Putting values and finding A

A=Pe^{rt}\\A=73000e^{0.03*5}\\A=73000e^{015}\\A=84813.899\\A\approx84814

So, After 5 years Gabriella will have $84814

Mila Data:

Principal Amount P= $73,000

Rate r = 3% or 0.03

Compounded quarterly n = 4

Time t = 5 years

The formula used is:A=P(1+\frac{r}{n})^{nt}

Putting values and finding A

A=P(1+\frac{r}{n})^{nt}\\A=73000(1+\frac{0.03}{4})^{4*5}\\A= 73000(1+0.0075)^{20}\\A= 73000(1.0075)^{20}\\A=73000(1.161)\\A=84753

So, After 5 years Mila will have $84753

Now subtracting to find the difference 84814-84753 = 61

So, Gabriella will make $61 more than Mila after 5 years

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Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or classes. If 7 adult smartphone use
Morgarella [4.7K]

Answer:

P(X \geq 3) = 1-P(X

If we find the individual probabilities we gotL

P(X=0)=(7C0)(0.51)^0 (1-0.51)^{7-0}=0.0068  

P(X=1)=(7C1)(0.51)^1 (1-0.51)^{7-1}=0.0494  

P(X=2)=(7C2)(0.51)^2 (1-0.51)^{7-2}=0.1543

And replacing we got:

P(X \geq 3) = 1- [0.0068 +0.0494 +0.1543]= 0.7895

Step-by-step explanation:

Previous concepts  

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".  

Solution to the problem  

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n=7, p=0.51)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

For this case we want to find this probability:

P(X \geq 3)

And we can use the complement rule for this case:

P(X \geq 3) = 1-P(X

If we find the individual probabilities we gotL

P(X=0)=(7C0)(0.51)^0 (1-0.51)^{7-0}=0.0068  

P(X=1)=(7C1)(0.51)^1 (1-0.51)^{7-1}=0.0494  

P(X=2)=(7C2)(0.51)^2 (1-0.51)^{7-2}=0.1543

And replacing we got:

P(X \geq 3) = 1- [0.0068 +0.0494 +0.1543]= 0.7895

 

7 0
3 years ago
What is the equivalent logarithmic form of the equation 4(10)1.5t=20?
Cloud [144]

Answer: t = 1/3

Divide both sides by 60.

<u>4 x 10 x 1.5</u><u><em>t</em></u><em>     = </em> 20/60

     60

7 0
3 years ago
What is the rectangle area
pentagon [3]
Length times the width
3 0
3 years ago
Read 2 more answers
Pls help Pls no links​
WINSTONCH [101]

Hey there!

3^15/ 3^3

3^15

= 3*3*3*3*3*3*3*3*3*3*3*3*3*3*3

= 9*9*9*9*9*9*9*3

= 81*81*81*27

= 6,561 * 2,187

= 14,348,907

= 14,348,907/3^3

3^3

= 3*3*3

= 9*3

= 27

14,348,907/27

= 531,441

15 - 3 = 12

= 3^12

Because

3^12

= 3*3*3*3*3*3*3*3*3*3*3*3

= 9*9*9*9*9*9

= 81*81*81

= 6,561*81

= 531,441

531,441 ≈ 3^12

Therefore, your answer should be: 3^12

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

8 0
2 years ago
One morning a bird feeder in a backyard yard attracted 2 finches, 7 sparrows, and 7 blue birds. What is the empirical probabilit
Rama09 [41]

Answer:

Step-by-step explanation:

P(B)=7/(2+7+7)

P(B)=7/16

P(B)=0.4375

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