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2 years ago

Identify the correct logical reason for the next step in solving this equation

Mathematics

2 answers:

Musya8 [376]2 years ago

6 0

Answer:

Distributive property of equality

Step-by-step explanation:

The first thing to do in an equation is to distribute.

Amanda [17]2 years ago

6 0

Answer:

Distributive property of equality

Step-by-step explanation:

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X+y+z=−4 2x+3y−2z=10 −x+2y−3z=−12 solve for x,y,z WILL MARK BRAINLIEST!!!

Norma-Jean [14]

Answer:

x = 13

y = -10

z = -7

Step-by-step explanation:

x+y+z=−4

2x+3y−2z=10

−x+2y−3z=−12

Add the first and the third equations to eliminate x

x+y+z=−4

−x+2y−3z=−12

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

3y -2z = -16 Equation A

Add the second and twice the third equation to eliminate x

2x+3y−2z=10

−2x+4y−6z=−24

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

7y -8z = -14 Equation B

Take Equation A and multiply by -4

-4*( 3y -2z) = (-16)*-4

-12y + 8z = 64

Add this to Equation B

-12y + 8z = 64

7y -8z = -14

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

-5y = 50

Divide by -5

-5y/-5 = 50/-5

y = -10

Now using equation A

3y -2z = -16

3*-10 -2z = -16

-30 -2z = -16

Add 30 to each side

-2z = -16+30

-2z = 14

Divide by -2

-2z/-2 = 14/-2

z = -7

Now find x using the first equation

x+y+z = -4

x -7-10 = -4

x -17 = -4

Add 17 to each side

x-17+17 = -4+17

x = 13

7 0

3 years ago

GOODNIGHT luvs!!!!! 1+1=3 lol just a lil humor

Yuliya22 [10]

Answer:

Goodnight

Step-by-step explanation:

<3 don't stay up late and get rest !

8 0

2 years ago

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Identify the domain and range to the following relations and state whether or not the relations are functions. State why or why

Vladimir79 [104]

It’s a function because it passes the vertical line test

6 0

2 years ago

Someone pls help me answer this????? THE POINTS ARE (3,-4) And (3,5)

irina [24]

The circle goes thru the given points (3,-4) And (3,5). Since the x-coordinate does not change, the diameter lies right on the vertical line x=3. Since the vertical distance between these points is 5-(-4), or 9, the radius is 9/2.

The standard eq'n of a circle is (x-h)^2 + (y-k)^2 = r^2

Let's subst. what we know: we get (x-3)^2 + (y-1/2)^2 = (9/2)^2. Note that y = 1/2 is halfway between y=-4 and y=5.

3 0

3 years ago

Gabby makes banana bread at her bakery every Monday and Wednesday,

garri49 [273]

Answer:

Monday:

Cups of Sugar: 3

Tablespoon of Butter: 30

No. of Bananas: 75

Wednesday

Cups of Sugar: 1.12

Tablespoons of Butter: 11.2

No. of Bananas: 28

5 0

2 years ago