Answer:
5
Step-by-step explanation:
7x= 70-35
7x=35
x=35/7
x=5
Answer:
4492 years (to the nearest year)
Step-by-step explanation:
The quantity of radium left after a time t can be modeled using the equation below:
Given that:
The amount of radium left after a t years is:
If the quantity left is 10 mg, then:
Changing to logarithm form
In 4492 years, 10 mg of Radium will be left.
(3x+7)(2x−5)
=(3x+7)(2x+−5)
=(3x)(2x)+(3x)(−5)+(7)(2x)+(7)(−5)
=6x2−15x+14x−35
=6x2−x−35
Hope This Helps.
To figure out this question, I first divided 24 into 3, which gives me an answer of 8. then I divided 52 into 7 , which also is 8 . because the two numbers are the same, I know the ratios are equivalent.