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dusya [7]
3 years ago
13

Please help me fast hope its easy for ya

Mathematics
2 answers:
Ksju [112]3 years ago
8 0
I think it’s the last one
olchik [2.2K]3 years ago
4 0

Answer:

(1) 5x+14

(2)5x+15

(3) x^2 + 7x

(4) 4x+13

(5) x^2 +5x

(6) 6x+16

(7)x^2+4x

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The number of subscribers y to a website after t years is shown by the equation below:
choli [55]
\bf \qquad \textit{Amount for Exponential Growth}\\\\
A=I(1 + r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
I=\textit{initial amount}\\
r=rate\to r\%\to \frac{r}{100}\\
t=\textit{elapsed time}
\end{cases}\\\\
-------------------------------\\\\
y=50(1.75)^t\implies 
\begin{array}{llllll}
y=&50(&1+&0.75)&^t\\
\uparrow &\uparrow &&\uparrow &\uparrow \\
A&I&&r&t
\end{array}\qquad \cfrac{r}{100}=0.75
\\\\\\
r=100\cdot 0.75\implies \boxed{r=75\%}

the amount is a positive "r", rate, thus is a growth equation, so it increased.
5 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP <br><br> Thank you!!! &lt;3
Crazy boy [7]
2.625e14. now all u have ro do is simplify it
6 0
3 years ago
The weight of people in a small town in Missouri is known to be normally distributed with a mean of 162 pounds and a standard de
never [62]

Using the normal distribution relation, the probability that sample will exceed the weight limit is 0.004

<u>Using the relation</u> ::

  • Zscore =(X - μ) ÷ σ

The mean, μ = np = (162 × 19) = 3078

The standard deviation, σ = 28 × √19 = 122.049

<u>The Zscore</u> :

Zscore = (3401 - 3078) ÷ (122.049)

Zscore = 2.65

Hence,

P(Z > 2.65) = 1 - P(Z < 2.65)

Using a normal distribution table :

P(Z > 2.65) = 1 - 0.9959

P(Z > 2.65) = 0.004

Learn more : brainly.com/question/25204474

8 0
2 years ago
Which formula is used to calculate the standard deviation of sample data?
Cloud [144]

Answer:

s = sqrt [ Σ ( x i - x ) 2 / ( n - 1 ) ]

Step-by-step explanation:

where s is the sample standard deviation, x is the sample mean, x i is the ith element from the sample, and n is the number of elements in the sample. And finally, the standard deviation is equal to the square root of the variance.

8 0
3 years ago
Read 2 more answers
Let f(x)=x^2 and g(x)=x-3. evaluate (fog)(-2)
Studentka2010 [4]
F(x) = x²
g(x) = x - 3

g(-2) = (-2) - 3 = -5

f(-5) = (-5)² = 25

Answer : <span>(fog)(-2) = 25</span>
7 0
3 years ago
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