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3 years ago

What is the solution to this system of equations?

Mathematics

2 answers:

Liula [17]3 years ago

8 0

Answer:

Step-by-step explanation:

liq [111]3 years ago

7 0

Answer:

No answer

Explanation:

There is no equation

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A rectangular field is 0.3 kilometers long and 0.15 kilometers wide. What is the area of the field in square meters?

Anika [276]

Answer:

4.5 meters

Step-by-step explanation:

The formula for the area of a rectangle is length x width. Using this formula, you can substitute the given information and find the area:

length x width = area

0.3km x 0.15km = area

0.045km = area

Finally, you can now convert square kilometres into square meters by multiplying by 100:

0.045 x 100 = 4.5 meters

6 0

3 years ago

Find the common difference of this arithmetic sequence:<br> 5.9, 18.0, 30.1, 42.2, 54.3, 66.4...

Triss [41]

Answer:12.1

Step-by-step explanation:

It goes up by 12.1 each time

4 0

2 years ago

Georg invests $5000 for 14 years at a rate of 2% per year compound interest.

Rufina [12.5K]

Answer:

$\frac{1}{50}$ or 0.02

Step-by-step explanation:

2% x 1 to give the answer

reduce it to faction like

8 0

3 years ago

Why are the following expressions not<br> monomials?<br> 3xy^Z<br> 1-2s<br> (ab)^1/2

Natalka [10]

3xy^z: exponent is not a nonnegative int.

r-2s: it is not a product

(ab)^1/2: exponent is not a nonnegative int.

8 0

3 years ago

A music website charges x dollars for individual songs and y dollars for entire albums. Person A pays $25.92 to download 6 indiv

Elena-2011 [213]

Let $x$ equals to amount charged for downloading individual songs $\Rightarrow$ $y$ equals to amount charged for downloading an entire album.

Solve the system for $y$ :
$\left\{{{6x+2y = 25.92,}\atop{4x + 3y = 33.93;}}\right \left\{{{6x+2y = \frac{648}{25},}\atop{4x + 3y = \frac{3393}{100};}}\right
\\\left\{{{6x+2y-2y = \frac{648}{25}-2y,}\atop{4x + 3y = \frac{3393}{100};}}\right \left\{{{6x = \frac{648}{25}-2y,}\atop{4x + 3y = \frac{3393}{100};}}\right
\\\left\{{{x = \frac{-25y+324}{75},}\atop{4x + 3y = \frac{3393}{100};}}\right \left\{{{x = \frac{-25y+324}{75},}\atop{4\frac{-25y+324}{75} + 3y = \frac{3393}{100};}}\right$
$\left\{{{x = \frac{-25y+324}{75},}\atop{\frac{4(-25y+324)}{75} * 300 + 3y * 300 = \frac{3393}{100} * 300;}}\right \left\{{{x = \frac{-25y+324}{75},}\atop{16(-25y+324)+900y = 10179;}}\right
\\\left\{{{x = \frac{-25y+324}{75},}\atop{500y+5184 = 10179;}}\right \left\{{{x = \frac{-25y+324}{75},}\atop{500y = 4995;}}\right
\\\left\{{{x = \frac{-25y+324}{75},}\atop{y = \frac{999}{100} = 9.99;}}\right$

Solving the system for $x$ is unoptional since we already have the answer we've been looking for. Your answer is $9.99\$$ .

3 0

3 years ago