Answer:
Step-by-step explanation:
Use the equation 2,000 = 16,000(1-r)^t to solve for t;
2000 = 16000(1-0.35)^t
Divide both sides by 16000
2000/16000 = 0.65^t
0.125 =0.65^t
Introduce logarithm on both sides;
<em>ln</em> 0.125 = t <em>ln</em> 0.65
Divide both sides by <em>ln</em> 0.65;
(<em>ln</em> 0.125) / (<em>ln</em> 0.65) = t
-2.07944/ -0.4308 = t
4.827 = t
t= 5 (as a whole number)
Therefore, the car is about 5 years old.
A) The population and sample mean are always the same ... in this case, it is 20.6 minutes.
<span>b) First convert the data to z-values: </span>
<span>P(X<18) = P(z < (18-20.6)/8.4) = P(z< -0.3095) </span>
<span>Now, using a Standard Normal table, look up z= -0.3095 </span>
<span>P(X<18) = 0.3785 </span>
<span>Hope that helps</span>
Answer:
New amount (decrease) = £17253.53
Step-by-step explanation:
<u>Given the following data;</u>
Amount = £19064.67
Percentage = 9.5%
To find the percentage decrease;
Percentage cost = £1811.14
New amount (decrease) = Original amount - percentage cost
Substituting into the equation, we have;
New amount (decrease) = £19064.67 - £1811.14
<em>New amount (decrease) = £17253.53</em>
<span>the correct answer is
D) 1000 kilometers </span>
