Answer:
20:a , a=48
Step-by-step explanation:
5*4=20, 12*4 = 48
Simple mathematics, you multiple 5 by 4 to get 20, do the same thing to 12.
This is the answer 6x^2+15x+9
Part (a)
The length is supposed to be 22.2 cm, but it could be 0.3 cm less
So 22.2 - 0.3 = 21.9 cm is the smallest value for the length. This is the lower bound of the length.
The upper bound is 22.2 + 0.3 = 22.5 cm as it is the largest the length can get.
-------------
Use this for the width as well
The width is supposed to be 12 cm, but it could be as small as 12-0.3 = 11.7 cm and as large as 12+0.3 = 12.3 cm
-------------
<h3>Answers:</h3>
- smallest length = 21.9 cm
- largest length = 22.5 cm
- smallest width = 11.7 cm
- largest width = 12.3 cm
============================================
Part (b)
Use the smallest length and width to get the smallest possible area
smallest area = (smallest width)*(smallest length) = 11.7*21.9 = 256.23
-------------
Repeat the same idea but for the largest length and width to get the largest possible area
largest area = (largest width)*(largest length) = 12.3*22.5 = 276.75
-------------
<h3>
Answers:</h3>
- smallest area = 256.23 square cm
- largest area = 276.75 square cm
Answer:
D
Step-by-step explanation:
Answer:
The same number of tickets was sold on the fourth day and tenth day.
Step-by-step explanation:
average rate of change from d = 4 to d = 10 is
(T(10) - T(4))/(10 - 4)
If the average rate of change is 0, then
(T(10) - T(4))/(10 - 4) = 0
T(10) - T(4) = 0 * 6
T(10) - T(4) = 0
T(10) = T(4)
That means the same number of tickets were sold on days 4 and 10.
Answer: The same number of tickets was sold on the fourth day and tenth day.
