X would be 60, I don’t know an equation, but you can divide both sides by 4 and get 20% of c is 12, and then you can multiply both sides by 5 to get that 100% of x is 60, hope this helps!
Answer:
Step-by-step explanation:
The exponential decay function is
where a is the initial value of the car, b is the rate of decay, and t is the time in years. Our rate of decay can also be written as (1 - r) where r is the depreciation in decimal form. Our equation looks like this:
which simplifies to
Now we can solve our problem for any number of years you'd like. We've been tasked to find the value of the car after 3 years, so:
which simplifies a bit to:
so
v(t) = 8043.57
Answer:
x=2(5−3iy−2i)
Step-by-step
Regroup terms.
5-3iy= \frac{1}{2} x+2i
Simplify \frac{1}{2}x\frac{x}{2}
5-3iy= \frac{x}{2}+2i
Subtract 2i from both sides.
5−3iy−2i= \frac{x}{2}
Multiply both sides by 2.
(5−3iy−2i)×2=x
Regroup terms
2(5−3iy−2i)=x
Switch sides
x=2(5−3iy−2i)
a) The system has infinitely many solutions in the following format:
(2 + z, 5 - z, z).
b) The system has no solution.
<h3>How to obtain the number of solutions of each system?</h3>
To obtain the number of solutions of each system, the equations are built from the augmented matrix presented.
For item a, both sides of the matrix have one zero row, hence the system has infinitely many solutions, and the equations are given as follows:
Hence the solutions in terms of z are given as follows:
Thus the format of the solutions is of:
(2 + z, 5 - z, z).
For item b, the right side has three non-zero rows, while the left-side has two, meaning that it has no solutions.
This can be verified from the last line, as the equation would be of:
0z = -2.
Which has no solution.
More can be learned about a system of equations at brainly.com/question/24342899
#SPJ1
9514 1404 393
Answer:
$98.15
Step-by-step explanation:
2005 is 15 years after 1990. Using the formula we find ...
c(15) = 63·1.03^15 ≈ 63·1.55797
c(15) ≈ 98.152
An ounce of the chemical costs about $98.15 in 2005.
