Y=4x-7...................
Answer:
![t = \frac{100}{r} [\frac{D}{C} - 1]](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B100%7D%7Br%7D%20%5B%5Cfrac%7BD%7D%7BC%7D%20-%201%5D)
Step-by-step explanation:
Assume that the deposited amount C dollars earn r% simple interest annually.
If after t years the deposited amount C dollars grows to D dollars, then we are asked to write a relation using the given terms to calculate t.
Now, using the formula of simple interest we can write
⇒
⇒
⇒
So, this is the expression for t. (Answer)
Center : Mean Before the introduction of the new course, center = average(121,134,106,93,149,130,119,128) = 122.5 After the introduction of the new course, center = average(121,134,106,93,149,130,119,128,45) = 113.9 The center has moved to the left (if plotted in a graph) because of the low intake for the new course. Spread before introduction of the new course : Arrange the numbers in ascending order: (93, 106,119, 121), (128, 130,134, 149) Q1=median(93,106,119,121) = 112.5 Q3=median(128,130,134,149) = 132 Spread = Interquartile range = Q3-Q1 = 19.5 After addition of the new course,
(45,93, 106,119,) 121, (128, 130,134, 149)
Q1=median(45,93,106,119)=99.5
Q3=median (128, 130,134, 149)= 132
Spread = Interquartile range = 132-99.5 =32.5
We see that the spread has increased after the addition of the new course.
Answer:
$53.33
Step-by-step explanation:
After 25% discount, paid is 100-25 = 75% of the actual price
75% : 40
100% : X
X/100 = 40/75
X = 4000/75
X = 53.3333333333