3 years ago

Bx-6y=18 and 2x-3y=9

Mathematics

1 answer:

Sloan [31]3 years ago

4 0

X - 6y=18
2x-3y=9 |*-2

x -6y=18
-4x+6y=-18
----------------
-3x=0, x=0

2x-3y=9
2*0-3y=9
-3y=9, y=-9/3, y= -3

You might be interested in

In a race, the mean time for three runners was 12.4 seconds and the mean

Ne4ueva [31]

Answer:

11.8

Step-by-step explanation:

3(12.4) + 6(11.5) = 37.2 + 69 = 106.2

106.2/9 = 11.8

4 0

3 years ago

What is the product of -2x^3 + x -5 and x^3 – 3x?

lana66690 [7]

(-2x^3 +x -5) * (x^3 -3x)
= x^6*(-2*1) +x^4*(-2*-3 +1*1) +x^3*(-5) +x^2*(-3) +x(-5*-3)
= -2x^6 +7x^4 -5x^3 -3x^2 +15x

8 0

3 years ago

Find the volume 12 poir 2.2 cm

Tanzania [10]

Answer: 26.4
To find the volume u multiply 12x2.2=26.4

6 0

3 years ago

Helpppppppppppppppppppppp..... .......

morpeh [17]

Answer:

${ \sf{( \sec \theta - \csc \theta)(1 + \tan \theta + \cot \theta) }} \\ = { \sf{( \sec \theta + \tan \theta \sec \theta + \cot \theta \sec \theta) - ( \csc \theta - \csc \theta \tan \theta - \csc \theta \cot \theta)}} \\ = { \sf{( \sec \theta + \sec \theta \tan \theta + \csc \theta) - ( \csc \theta - \sec \theta - \csc \theta \cot \theta)}} \\ = { \sf{ \sec \theta \tan \theta + \csc \theta \cot \theta }} \\ { \bf{hence \: proved}}$

3 0

3 years ago

Adam bought three laptops for his office at a total cost of $1,300. The shopkeeper tried to sell Adam some upgrades and accessor

horsena [70]

first laptop: $700

second laptop: $400

third laptop: $200

5 0

3 years ago

Read 2 more answers