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tiny-mole [99]
3 years ago
14

Explain which number is the "odd ball out" below 42, 9, 60, 8, 12

Mathematics
1 answer:
stiv31 [10]3 years ago
3 0

Answer:

9

Step-by-step explanation:

because its odd    

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Use Cramer's rule to solve the following system of equations.
sp2606 [1]
5x + 3y = 7> (4) 5x + (4) 3y = (4) 7 4x + 5y = 3> (-5) 4x + (-5) 5y = (-5) 3 20y + 12y = 28 -20x -25y = -15 (X's cross out) 12y - 25y = 28 -15 -13y = 13 Y = -1 (Plug in for y) 5x + 3(-1) = 7 5x -3 =7 (add 3 to 7) 5x = 10 (divide by 5) X= 2 Ordered Pair= (2, -1)
4 0
3 years ago
which ordered pair is a solution to the system of linear equations 1/2 x - 3/4 y = 11/60 and 2/5 x + 1/6 y = 3/10?
bekas [8.4K]

Value of x=\frac{2}{3}\,\,and\,\,value\,\,of\,\,y=\frac{1}{5}

Solution set is  (\frac{2}{3},\frac{1}{5})

Step-by-step explanation:

We need to solve the following system of equations:

\frac{1}{2}x-\frac{3}{4}y=\frac{11}{60}\,\,\,eq(1)\\\frac{2}{5}x+\frac{1}{6}y=\frac{3}{10}\,\,\,eq(2)

We can solve this using Substitution.

Isolate x in \frac{1}{2}x-\frac{3}{4}y=\frac{11}{60}

\frac{1}{2}x=\frac{11}{60}+\frac{3}{4}y\\ x=\frac{11}{30}+\frac{3}{2}y

Putting value of x in equation(2)

\frac{2}{5}(\frac{11}{30}+\frac{3}{2}y)+\frac{1}{6}y=\frac{3}{10}\\Solving:\\Taking\,\,LCM\,\,of\,\,5,6,10 \,\,we\,\,get: 30\\Multiply\,\,by\,\,LCM\\\frac{2}{5}(\frac{11}{30}+\frac{3}{2}y)\times30+\frac{1}{6}y\times30=\frac{3}{10}\times30\\Simplifying:\\12(\frac{11}{30}+\frac{3}{2}y)+5y=9\\\frac{22}{5}+18y+5y=9\\23y=9-\frac{22}{5}\\23y=\frac{45-22}{5}\\23y=\frac{23}{5}\\y=\frac{\frac{23}{5} }{23}\\y=\frac{1}{5}

Putting value of y=1/5 in x=\frac{11}{30}+\frac{3}{2}y

x=\frac{11}{30}+\frac{3}{2}\times\frac{1}{5} \\x=\frac{11}{30}+\frac{3}{10}\\x=\frac{11+3*3}{30}\\x=\frac{11+9}{30} \\x=\frac{20}{30}\\x=\frac{2}{3}

So, value of x=\frac{2}{3}\,\,and\,\,value\,\,of\,\,y=\frac{1}{5}

Solution set is  (\frac{2}{3},\frac{1}{5})

Keywords: System of linear Equations

Learn more about System of linear Equations at:

  • brainly.com/question/9045597
  • brainly.com/question/13168205
  • brainly.com/question/2115716

#learnwithBrainly

5 0
4 years ago
WILL GIVE BRAINLIEST!!!
Trava [24]

Answer:

the answer is 60, 60, 120, 120

Step-by-step explanation:

8 0
4 years ago
(08.02)
katovenus [111]

Answer:

(-4,2)

Step-by-step explanation:

Kindly check the attatched image to see the system graphed

The two equations intersect at (-4,2) so the solution is (-4,2)

7 0
2 years ago
Which polynomial represents a sum of cubes?
bija089 [108]

Answer:

1) The polynomial 8x^3+1 represents a sum of cubes

2) The polynomial 49x^2-25 represents a difference of squares

Step-by-step explanation:

1) To find the polynomials represents a sum of cubes :

8x^3+1 represents a sum of cubes

For 8x^3+1

=2^3x^3+1^3

=(2x)^3+1^3

Therefore 8x^3+1=(2x)^3+1^3

Therefore 8x^3+1 represents a sum of cubes

2)To find the polynomials represents a difference of squares :

49x^2-25 represents a difference of squares

For 49x^2-25

=7^2x^2-5^2

=(7x)^2-5^2

Therefore 49x^2-25=(7x)^2-5^2

Therefore 49x^2-25 represents a difference of squares

5 0
4 years ago
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