Answer: the answer is 14 if the 2 and 7 are a fraction and if it’s just 27xn=4 the answer is 4/27 and in decimal form it’s 0.148
Step-by-step explanation:
Answer:
Ram: 21, Hari: 12
Step-by-step explanation:
To solve the problem, we can use the following notation. We call:
= Ram's age at present
= Hari's age at present
We know that:
- Ram is 9 years older than Hari --> mathematically, this can be written as
![r=h+9](https://tex.z-dn.net/?f=r%3Dh%2B9)
- Three years ago, Ram was two times as old as Hari was --> mathematically, this can be written as
![r-3=2(h-3)](https://tex.z-dn.net/?f=r-3%3D2%28h-3%29)
where (r-3) is Ram's age 3 years ago, while (h-3) is Hari's age 3 years ago
Substituting eq.(1) into eq.(2), we find:
![(h+9)-3=2(h-3)\\h+9-3=2h-6\\h+6=2h-6\\h=12](https://tex.z-dn.net/?f=%28h%2B9%29-3%3D2%28h-3%29%5C%5Ch%2B9-3%3D2h-6%5C%5Ch%2B6%3D2h-6%5C%5Ch%3D12)
So, Hari's age is 12; therefore, Ram's age is
For this case what we have to take into account is the following variable:
x = represent the unknown number
We now write the following inequality:
"four times the sum of number and 15 is at least 20"
4 (x + 15)> = 20
We clear the value of x:
(x + 15)> = 20/4
(x + 15)> = 5
x> = 5 - 15
x> = - 10
The solution set is:
[-10, inf)
Answer:
all possible values for X are:
[-10, inf)
The formula for exponential growth is:
Total = starting value x (1 + rate)^ time
Using the information in the problem the formula would be:
y = 2300(1.093)^t
Answer:
Hi, there the answer is 2
Step-by-step explanation: