21x - 19 = 3x + 17 |add 19 to both sides
21x = 3x + 36 |substract 3x from both sides
18x = 36 |divide both sides by 18
x = 2
Answer:
1. 18 2. 13 3. 36
Step-by-step explanation:
<span>The answer is 9,990 years. Using the exponential decay question, we can figure out how long it will take Plutonium-240 to decay from 27 grams to 9 grams. Setting the equation up looks like this, 9 = 27 e^ (-0.00011 t). From this you get, 0.333333 = e ^(-0.00011 t). Next, you simplify by dividing both sides by the natural log, -1.0986 = -0.00011 t. Finally, you solve by dividing both sides by -0.00011, giving 9,987 years for t, rounded up to 9,990 years.</span>
Answer:
<h3>1952.00</h3><h3>I=976</h3>
Step-by-step explanation:
<u><em>SIMPLE INTEREST FORMULA:</em></u>
I- Interest
P- Principal
R- Rate
T-Time
P=976
R=25
T=4 years
976*25%4
25%=0.25
Solve.
Multiply.
976*0.25*4
976*0.25*4=976
I=976
976 and $1952.00, which is our answer.
This number is natural, whole, integer, and rational.
Whole numbers are numbers such as 0, 1, 2, ... This is a whole number.
Natural numbers can also be counting numbers. They are the whole numbers, but starting at 1, not 0. This is a natural number.
Integers are whole numbers with negatives. This is an integer.
Rational numbers are any numbers that can be written as a fraction. We can write this as 4563/1, so it is rational.