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Alchen [17]
3 years ago
7

Question down below...

Mathematics
1 answer:
zloy xaker [14]3 years ago
6 0

Answer:

14,500*0.8= 11,600

14,500-11,600= 2,900 it decreased in the first year

Step-by-step explanation:

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Write the matrix equation as a system of linear equations without matrices. [Start 3 By 3 Matrix 1st Row 1st Column 1 2nd Column
ASHA 777 [7]

Answer:

x-2y-4z=8\\5x-4y+7z=5\\-7x+5y+2z=-3

Step-by-step explanation:

Given the matrix equation below:

\left(\begin{array}{ccc}1&-2&-4\\5&-4&7\\-7&5&2\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}8\\5\\-3\end{array}\right)

We are required to write the matrix equation as a system of linear equations without matrices.

\left(\begin{array}{ccc}1&-2&-4\\&&\\&&\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}8\\&\\&\end{array}\right)$is equivalent to: x-2y-4z=8

\left(\begin{array}{ccc}\\5&-4&7\\&&\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}&\\5\\&\end{array}\right)$ is equivalent to: 5x-4y+7z=5

\left(\begin{array}{ccc}&\\&\\-7&5&2\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}&\\&\\-3\end{array}\right)$ is equivalent to: -7x+5y+2z=-3

Therefore, we have the system of equations:

x-2y-4z=8\\5x-4y+7z=5\\-7x+5y+2z=-3

8 0
3 years ago
20 Points - A mathematical model estimates sales (in thousands of dollars) as a function of time t (in years) as S(t) = 5t/t+1,
adelina 88 [10]
The first choice is the correct answer. Note that for S(t) = 5t/(t+1):At t = 0, S = 0At t = 1, S = 5(1/2)At t = 2, S = 5(2/3)And as t increases, S approaches 5. (The pattern 1/2, 2/3, 3/4...gets closer and closer to 1).

6 0
3 years ago
Write a word phrase for the algebraic expression 3x+10
lions [1.4K]
Hello there!

Jenny wants to park in an airport parking lot. The parking lot costs x amount of money per hour, plus an additional parking fee of $10. Jenny stays in the parking lot for 3 hours.

This causes our equation to be 3x (3 hours) + 10 (additional parking fee).

I  hope this helps!
5 0
3 years ago
In each box, 20% of the total candies are grape flavored. In a box of 45 candies, how many are grape flavored?
Debora [2.8K]

Answer:

20% of 45 would be 9. That means 9 candies, will be grape flavored.

8 0
2 years ago
Read 2 more answers
Y=10,000(0.97)x predict purchasing power of $10,000 ten years later
Maksim231197 [3]

Answer:

It will be $7602.3

Step-by-step explanation:

The equation y = 10000(0.97)^{x} gives the purchasing power of $10000 after x years.

Therefore, the sum of money $10000 will value 10000(0.97)^{x} after x number of years.

Now, after 9 years i.e. x = 9 years, the sum value of $10000 will become y = 10000(0.97)^{9} = 10000 \times 0.76023 = 7602.3 dollars. ( Answer )

8 0
3 years ago
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