Step-by-step explanation:
D because -2.3 is the number between -2 and -3 but it's not more than -2.5 (half point of -2and -3).
Answer:
x=2y=6
Step-by-step explanation:
x+2y=-2y+6+2y
(12.5*2*Pi) / 8 = 3.125*Pi [1/s]
Answer:
Nifal received $ 4 for washing the first car.
Nifal received $ 5 for washing the second car.
4 and 5 have a sum of 9.
Step-by-step explanation:
The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:


Then, by eliminating y:

Now, let is clear
:


Nifal received $ 4 for washing the first car.
The earning for the second car is: (
)



Nifal received $ 5 for washing the second car.
4 and 5 have a sum of 9.