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raketka [301]
3 years ago
6

Classify the following system of equations.

Mathematics
1 answer:
zubka84 [21]3 years ago
4 0

Answer:

B) consistent, dependent

Step-by-step explanation:

The given system is

45x - 30y = -90

-12x + 8y = 24

Let us make y the subject in both equations to get:

Top equation

y =  \frac{3}{2}y + 3

Bottom equation

y =  \frac{3}{2}x + 3

We can see that both equations are identically the same.

There is going to be infinitely many solutions.

We say the system is consistent and dependent.

The correct choice is B

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A circle has a radius of 6. An arc in this circle has a central angle of 48 degress. What is the length of the arc?
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Answer: 1.6\pi

Step-by-step explanation:

If a circle has a radius of 6, then the perimeter of the circle is 12pi, or about 37.68.  A circle has 360 degrees.  Thus, the arc takes up 48/360 of the circle.  Thus, simply multiply \frac{48}{360} * 12\pi to get 5.024 or 1.6pi.

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3 0
3 years ago
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Area of semicircle = 1/2 the area of a circle:
A_{sc}=\frac{1}{2}  \pi  r^{2}
radius is half the diameter of 6ft.
A_{sc} = \frac{1}{2}  \pi  (3^{2} )=14.13 ft^{2} .
Area of the rectangle:
A_{r} =lw=15*6=90 ft^{2} .
Add the two together:
90 + 14.13 = 104.13
Round to the nearest tenth (one decimal place)
Area = 104.1 square feet.

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3 years ago
In a book shop, there are 12 new books on a table. 7 of the books are fiction and the rest are non-fiction. What fraction of the
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Step-by-step explanation:

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3 years ago
What are the the symbolsfor:<br> y-hat, p-hat, y-bar
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3 years ago
What’s the answer and give an explanation.
tino4ka555 [31]

Answer:

14 = x and 2.5 = y

Step-by-step explanation:

For ABCD - the top is 8 and the sides are 11. 11 minus 8 is 3. 11 plus 3 equals 14, that’s x.

For GHIJ - the bottom is 8 and both sides are 5.5. So 8 minus 5.5 is 2.5. That’s y.

4 0
2 years ago
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