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3 years ago

What operation is being done to the variable in the equation -5m = -40?

Mathematics

2 answers:

enyata [817]3 years ago

7 0

B ,it’s being divided because anytime u see a variable with a right beside it like that you know to divide.

iVinArrow [24]3 years ago

5 0

Answer:

it's being divided by -5

Step-by-step explanation:

-5m= -40

m=8

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Write an equation for the nth term of the arithmetic sequence -9,-4,1,6 then find a50

Dmitry_Shevchenko [17]

Answer :

an = -9 + (9-1) 5

an = -9 + (8) 5

an = -9 + 40

an = 31 is the answer

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3 years ago

What is the approximate volume of a cylinder with a height of 2 ft and a radius of 6 ft?

patriot [66]

We know, Volume of a Cylinder = πr²h
Here, r= 6 & h = 2

Substitute their values into the expression:
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3 years ago

Solve the system. find x,y, and z please show all steps x-y+z=1 x+y+3z=-3 2x-y+2z=0

Mariulka [41]

Solving the system we get, x= -1, y= -2 and z= 0

Step-by-step explanation:

Solving the equations to find x, y and z

$x-y+z=1\,\,\,eq(1)\\x+y+3z=-3\,\,\,eq(2)\\2x-y+2z=0\,\,\,eq(3)$

Adding eq(1) and eq(2)

$x-y+z=1\\x+y+3z=-3\\--------\\2x+4z=-2\,\,\,\,eq(4)\\$

Adding eq(2) and eq(3)

$x+y+3z=-3\\2x-y+2z=0\\----------\\3x+5z=-3\,\,\,eq(5)$

Multiplying eq(4) by 3 and eq(5) by 2

$6x+12z=-6\\6x+10z=-6\\-\,\,\,-\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\----------\\2z=0\\z=0$

So, value of z =0

Putting value of z in eq(4)

$2x+4z=-2\\2x+4(0)=-2\\2x=-2\\x=-1$

So, value of x = -1

Now putting value of z=0 and x =-1 in equation 1

$x-y+z=1\\-1-y+0=1\\-y=1+1\\-y=2\\y=-2$

So, value of y = -2

So, solving the system we get, x= -1, y= -2 and z= 0

Keywords: Solve the system

Learn more about Solve the system at:

#learnwithBrainly

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Black_prince [1.1K]

Answer:

Step-by-step explanation:

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3 years ago

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Solve the equation 3 - 2x = 9 a) x = 3 b)x = -3 c) x = 6 d) x = -6

Elza [17]

Answer:

Option B is correct ...

 $solution \\ 3 - 2x = 9 \\ or \: - 2x = 9 - 3 \\ or \: - 2x = 6 \\ or \: x = \frac{6}{ - 2} \\ x = - 3$ 

hope this helps..

Good luck on your assignment...

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2 years ago

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