Answer:
90
Step-by-step explanation:
Write the ratio this way
Pip: Sara: Total
5 : 4 : 9
We multiply each by 10 to get Pip to 50 (5*10 = 50)
5*10: 4*10: 9*10
50 : 40 : 90
Well, if you take x to be 25 seconds, there are 2.4x in 1min. So, that multiplied by 60, would be 144x. Therefore, 1/4 multiplied by 144x should be the answer.
Answer:
A -81.26
Step-by-step explanation:
Answer:
The graph is shown below.
The time to make the taste to half is <u>4.265 s.</u>
Step-by-step explanation:
Given:
Initial value of the taste is, 
Therefore, the quality of taste over time 't' is given as:

Now, when the taste reduces to half, 
Therefore,

Taking natural log on both the sides, we get:

Therefore, the time to make the taste to half is <u>4.265 s.</u>
Answer:
5
Step-by-step explanation:
5 x 8 = 40
3.50 x 4 = 14