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Vlad [161]
2 years ago
13

One survey estimates that, on average, the retail value of a mid-sized car decreases by 8% annually. If the retail value of a ca

r is V dollars today, which expression represents the car’s value 1 year later?
A. 0.08V
B. 0.92V
C. 1.08V
D. V-0.08
Mathematics
2 answers:
nexus9112 [7]2 years ago
8 0
\bf \qquad \textit{Amount for Exponential Decay}\\\\
A=I(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
I=\textit{initial amount}\to &V\\
r=rate\to 8\%\to \frac{8}{100}\to &0.08\\
t=\textit{elapsed time}\to &1\\
\end{cases}
\\\\\\
A=V(1-0.08)^1\implies A=V(0.92)\implies A=0.92V
AURORKA [14]2 years ago
5 0

Answer:

sorry i just need points and this was 3 1.5 years ago....

Step-by-step explanation:

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Justin is training for a hamburger eating competition. He is eventually able to eat 15 hamburgers in 10 minutes. What is justin’
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Answer:

1.5 hamburgers per minute

Step-by-step explanation:

In 10 minutes, Justin can eat 15 burgers.

In 1 minute, Justin can eat 15/10 burgers.

15/10 = 1.5

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2 years ago
Investors buy a studio apartment for 120000 of this amount they have down payment of 24000 their down payment is what percent of
Yakvenalex [24]

Answer:

1. 20%

2. 40%

Step-by-step explanation:

To find the percent of the total payment that the down payment is we have to you use the following equation:

\frac{part}{whole} * 100 = percent

Lets start plugging things into the equation.

The part is equal to the down payment and the whole is the total cost of the studio apartment.

Let's do this for the first question

\frac{24,000}{120,000} * 100 = 20%

So we see that 24,000 is 20% of the total purchase price!

Let's do this for the next question:

\frac{48,000}{120,000} * 100 = 40

48,000 is 40% of the 120,000 total cost!

<em>Hope this helps!</em>

<em>- Kay</em>

<em />

7 0
3 years ago
Help me <br>Help me <br>Please​
Leno4ka [110]

Answer:

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Step-by-step explanation:

7 0
2 years ago
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A researcher wants to see if birds that build larger nests lay larger eggs. He selects two random samples of nests: one of small
True [87]

Answer:

95% confidence interval for the difference between the average mass of eggs in small and large nest is between a lower limit of 0.81 and an upper limit of 2.39.

Step-by-step explanation:

Confidence interval is given by mean +/- margin of error (E)

Eggs from small nest

Sample size (n1) = 60

Mean = 37.2

Sample variance = 24.7

Eggs from large nest

Sample size (n2) = 159

Mean = 35.6

Sample variance = 39

Pooled variance = [(60-1)24.7 + (159-1)39] ÷ (60+159-2) = 7619.3 ÷ 217 = 35.11

Standard deviation = sqrt(pooled variance) = sqrt(35.11) = 5.93

Difference in mean = 37.2 - 35.6 = 1.6

Degree of freedom = n1+n2 - 2 = 60+159-2 = 217

Confidence level = 95%

Critical value (t) corresponding to 217 degrees of freedom and 95% confidence level is 1.97132

E = t×sd/√(n1+n2) = 1.97132×5.93/√219 = 0.79

Lower limit = mean - E = 1.6 - 0.79 = 0.81

Upper limit = mean + E = 1.6 + 0.79 = 2.39

95% confidence interval for the difference in average mass is (0.81, 2.39)

3 0
2 years ago
Mr Smith is making a 4 question quiz. looking at a bank of quiz questions there are 17 choices for question one, 16 choices for
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Answer:

4,352

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17 × 16 × 8 × 2

4352

8 0
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