Answer:
146.6 grams
Step-by-step explanation:
We have been given an element with Mass 630 grams decays by 18.8% per minute.
We will use exponential decay function to solve our given problem.
, where,
y = Final amount,
a = Initial amount,
r = Rate of decay in decimal form,
x = Time.
Substitute the given values:
Therefore, 146.6 grams of the element is remaining after 7 minutes.
Answer:
If im correct its $281.08
Step-by-step explanation:
So i added all the numbers
$37.95+$52.00 (etc.)
Then i added the first number to the total
$82.50+$198.58 ( those are all the numbers i added at the beginning.)
Then it should equal $281.08
He had $281.08 before he paid his bills.
Answer:
x < -2
y > 1
Step-by-step explanation:
x < -3 + y
*x + y > -1
(-3 + y) + y > -1
-3 + 2y > -1
2y > -1 + 3
2y > 2
y > 1
*x < -3 + y
x < - 3 + (1)
x < -2
Answer:
13.4 dollars
Step-by-step explanation:
The final amount is given by:
F=I(1+rt)
Where
I= initial amount
r= interest rate
t= time interval
F= final amount
Now in our case
r= 1.2
t= 7
F= $126
Therefore I=F/(1+rt) = 126/(1+1.2*7) = 13.4 dollars.
To find out how much Kelly deposited when she opened the account, we can use the formula for simple interest. We are given that the interest earned is $126 and the interest rate is 1.2% per year. After assigning a variable to represent the principal, we can solve the equation to find the amount Kelly deposited.
To find out how much Kelly deposited when she opened the account, we can use the formula for simple interest:
Interest = Principal × Rate × Time
We are given that the interest earned is $126 and the interest rate is 1.2% (or 0.012 as a decimal) per year. We also know that Kelly kept the money in the account for 7 years. Let's assign a variable, P, to represent the principal:
$126 = P × 0.012 × 7
To solve for P, we can divide both sides of the equation by 0.012 × 7:
P = $126 / (0.012 × 7)
Calculating this expression gives us the value of P, which is the amount Kelly deposited when she opened the account.
#SPJ11
A. k = 3,062
B. k = 3,052
C. k = 4,052
Answer:
3,052
Step-by-step explanation: