Answer:
a. 2x + 4
Step-by-step explanation:
Four more than twice a number
Let x = unknown number
Four more than twice of x
Twice of x can be written as 2x
Four more than 2x
Four more can be written as + 4
We get 2x + 4
No not really. I’m not having issues with Brainly.
Answer:
1.25kg
Step-by-step explanation:
useing the problem the half life equation will be:
f(x)=5(0.5)^(x/140)
x is amount of days
so plugging in 280 for x will get 1.25kg
Answer:
1.one solution is the answer
Step-by-step explanation:
Answer: it is in absolute value form, so when you take it out the signs would change to 7 + 42 = 49
Step-by-step explanation:
