Answer:
A
Step-by-step explanation:
Hope this helps!
Since it has a half life of 60 days, this means that every 60 days it multiplies by 0.5. Since it asks for 300 days, your equation is 500*(0.5)^5, which is 15.625 mg left after 300 days.
In goes 4.
We then subtract 7.
So, 4 - 7 = -3
We now divide -3 by 3.
The output is -1.
Answer:
24
Step-by-step explanation:
= 10x+y=4(x+y)
= 10x-4x=4y-y
= 6x=3y
(÷2) = (2x=y)----- eq.1
According to the quest:-
Case.2-- the number is also equal to 3 times the product of the digits.
10x+y=3xy
Substitute the value of y=2x in place of y.
We get, 10x+2x=(3x)(2x)
= 6x²-12x=0
= 6x(x-2)=0
= 6x=0 so, x=0 or x-2=0 so, x=2.
Consider eq.1:- 2x=y
= 2(2)=y so y=4
OR
= 2(0)=y so y=0
So we take x=2 and y=4
The number:- 10x+y
= 10(2)+4
= 24