Answer:

Step-by-step explanation:

(3/4)^4 = 81/256
1 ÷ 81/256 = 256/81
So;



Answer:
Step-by-step explanation:
{24a -18b}
=6 {4a-3b}
Answer:
8/12
Step-by-step explanation:
Hope it’s right
-5x + 5y = 40 -20x +20y =160 -5x + 5(8) = 40
4x + 3y = 24 20x +15y =120 -5x + 40 = 40
35y = 280 -5x =0
y = 8 x = 0
Hope you understood this
Answer:
The initial temperature of the coffee was 90°C.
Step-by-step explanation:
The function representing the temperature of the coffee after <em>x</em> minutes is:

T is the temperature in degree Celsius.
The initial temperature of the coffee will be at <em>x</em> = 0.
Compute the value of T (x) at x = 0 as follows:



Thus, the initial temperature of the coffee was 90°C.