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Brut [27]
2 years ago
13

Solve the system of equations using elimination. How many solutions does the system have?

Mathematics
1 answer:
Mariana [72]2 years ago
7 0

Answer:

  infinite solutions

Step-by-step explanation:

The coefficient of x in the first equation is 3 times the coefficient of x in the second equation. This means we can eliminate x by subtracting 3 times the second equation from the first:

  (15x +12y) -3(5x +4y) = (18) -3(6)

  0 = 0 . . . . . simplify (true for all values of x or y)

The system of equations has an infinite number of solutions.

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600 is how many times as much as 20?
Montano1993 [528]

The value 600 is 30 times as much as 20

<h3>Ratio and proportion</h3>

Ratio are written in terms of fractions. The expression 600 is how many times as much as 20 can be written as;

600 = x *20

where x is the required value or factor

20x = 600

Divide both sides by 20

20x/20 = 600/20

x = 30

Hence the value 600 is 30 times as much as 20

Learn more on ratio and proportion here: brainly.com/question/19994681

#SPJ1

3 0
2 years ago
How many unique planes can be determined by four noncoplanar points?
marta [7]

Answer:

Four unique planes

Step-by-step explanation:

Given that the points are non co-planar, triangular planes can be formed by the joining of three points

The points will therefore appear to be at the corners of a triangular pyramid or tetrahedron such that together the four points will form a three dimensional figure bounded by triangular planes

The number of triangular planes that can therefore be formed is given by the combination of four objects taking three at a time as follows;

₄C₃ = 4!/(3!×(4-3)! = 4

Which gives four possible unique planes.

3 0
3 years ago
40pts!! Select the correct answer. <br> Simplify.
stiv31 [10]

Hey!

-------------------------------------------------

Solution:

=\frac{3x^2y^3}{z^3}

Cube the coefficients.

= \frac{27x^2y^3}{z^3}

Multiply the exponents.

= \frac{27x^6y^9}{z^9}

-------------------------------------------------

Answer:

Option D.

-------------------------------------------------

Hope This Helped! Good Luck!

5 0
3 years ago
explain why an circle would have an infinite number of lines of reflection that would carry the circle into itself?
Irina-Kira [14]
Circles will never have a side but they only have 1 line that can be counted as a side.
7 0
4 years ago
Read 2 more answers
30.16=17.56+5x what is the soloution to this equation what is x
skelet666 [1.2K]
Take 30.16-17.56. Theb divide by 5
4 0
4 years ago
Read 2 more answers
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