Answer:
or x ÷ 5
Step-by-step explanation:
The quotient of x and 5 can be represented as
or x ÷ 5
8 + -3x-15/2x^2+×+2 should be the correct answer.
It’s D because it’s just obvios that there’s not 15% of the kids
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, ![Q_0=1](https://tex.z-dn.net/?f=Q_0%3D1)
Therefore, the quality of taste over time 't' is given as:
![Q(t)=Q_0(0.85)^t\\Q(t)=1(0.85)^t](https://tex.z-dn.net/?f=Q%28t%29%3DQ_0%280.85%29%5Et%5C%5CQ%28t%29%3D1%280.85%29%5Et)
Now, when the taste reduces to half, ![Q=0.5](https://tex.z-dn.net/?f=Q%3D0.5)
Therefore,
![0.5=1(0.85)^t](https://tex.z-dn.net/?f=0.5%3D1%280.85%29%5Et)
Taking natural log on both the sides, we get:
![\ln(0.5)=\ln(0.85)^t\\\ln(0.5)=t\ln(0.85)\\t=\frac{ln(0.5)}{\ln(0.85)}=4.265\ s](https://tex.z-dn.net/?f=%5Cln%280.5%29%3D%5Cln%280.85%29%5Et%5C%5C%5Cln%280.5%29%3Dt%5Cln%280.85%29%5C%5Ct%3D%5Cfrac%7Bln%280.5%29%7D%7B%5Cln%280.85%29%7D%3D4.265%5C%20s)
Therefore, the time to make the taste to half is <u>4.265 s.</u>
A) f(5)= 5^2 -2•5= 25-10=15
b) x^2 -2x-3=0
(x-3)(x+1)=0 so
x=3 and x=-1 are the solutions