Answer:
if im not reading the equation wrong the answer should be 1/468
Step-by-step explanation:
Answer:
2.60 gr
Step-by-step explanation:
We need to consider the function
where Po is the initial substance k is the rate of decay and t is the time
We know that
and at the 7 th year P(t) is 7
This means

We solve for k

It will take 8 weeks to Tom to achieve his goal.
<h3>
What is the amount earned by him in a week?</h3>
The amount earned by him is given by multipliy number or hours and eaning in a hour.
Given
Tom has a goal of saving enough money to buy a new set of rims for his car.
Tom makes $7. 50 an hour take home pay at his job working 15 hours per week.
The earning of Tom in an hour = $7.5
If tom worked 15 hours in a week, then the amount earned by him in one week is;

The required amount to achieve his goal = $900
The number of week he need to work to achieve his target is;

Hence, It will take 8 weeks to Tom to achieve his goal.
To know more about equation click the link given below.
brainly.com/question/13605997
3a + 2c = 275 .... t-shirt costs $3 per adult and $2 per child and <span>total money collected was $275
</span>
a + c = 100 ... the total number of adults (a) and children (c) who bought shirts was 100
so
3a + 2c = 275
a + c = 100 so a = 100 - c
substitute a = 100 - c into 3a + 2c = 275
3a + 2c = 275
3(100 - c) + 2c = 275
300 - 3c + 2c = 275
-c = - 25
c = 25
a = 100 -c = 100 - 25 = 75
so a = 75 (adults) and c = 25 (children)
answer
<span>Equation 1: a + c = 100
Equation 2: 3a + 2c = 275
25 children and 75 adults</span>
Answer:
b
Step-by-step explanation:
thats what i got