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inessss [21]
2 years ago
7

To use the elimination method, you can add the two equations in a system of equations to eliminate one of the variables.

Mathematics
1 answer:
oksano4ka [1.4K]2 years ago
7 0

Answer:

x=1 y=19

Step-by-step explanation:

Let's solve your system by elimination.

−9x+y=10; 10x−y=−9

−9x+y=10

10x−y=−9

Add these equations to eliminate y:

x=1

Then solve x=1 for x:

x=1

Now that we've found x let's plug it back in to solve for y.

Write down an original equation:

−9x+y=10

Substitute1forxin−9x+y=10:

(−9)(1)+y=10

y−9=10(Simplify both sides of the equation)

y−9+9=10+9(Add 9 to both sides)

y=19

Hope this helps, I don't really get the answer choices though....

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Y=6/13X is a proportional relationship
Ivan

Answer:

x in (-oo:+oo)

Y = (6/13)*x // - (6/13)*x

Y-((6/13)*x) = 0

Y+(-6/13)*x = 0

Y-6/13*x = 0 // - Y

-6/13*x = -Y // : -6/13

x = -Y/(-6/13)

x = 13/6*Y

x = 13/6*Y

5 0
2 years ago
Point A is at (-6,6) and point C is at (-6,-2). Find the coordinates of point B on Ac such that AB =3/4AC​
BartSMP [9]

Answer:

  B(-6, 0)

Step-by-step explanation:

You want to find B such that ...

  (B -A) = (3/4)(C -A) . . . . the required distance relation

  4(B -A) = 3(C -A) . . . . . . multiply by 4

  4B = 3C +A . . . . . . . . . . add 4A, simplify

Now, we can solve for B and substitute the given coordinates:

  B = (3C +A)/4 = (3(-6, -2) +(-6, 6))/4 = (-24, 0)/4 = (-6, 0)

The coordinates of point B are (-6, 0).

3 0
3 years ago
Write a series of rigid motions that transform pentagon ABCDE to pentagon A′B′C′D′E′
worty [1.4K]

Answer:

We need the following three rigid motions:

i) Reflection around y-axis, ii) Translation three units in the -y direction, iii) Translation four units in the -x direction.

Step-by-step explanation:

We need to perform three operations on pentagon ABCDE to create pentagon A'B'C'D'E':

i) Reflection around y-axis:

(x',y') = (-x,y) (Eq. 1)

ii) Translation three units in the -y direction:

(x'',y'') = (x', y'-3) (Eq. 2)

iii) Translation four units in the -x direction:

(x''',y''') = (x''-4, y'') (Eq. 3)

We proceed to proof the effectiveness of operations defined above by testing point D:

1) D(x,y) = (-1, 4) Given.

2) (x',y') = (1,4) By (Eq. 1)

3) (x'',y'') = (1, 1) By (Eq. 2)

4) D'(x,y) = (-3,1) By (Eq. 3)/Result

7 0
2 years ago
99165+67894321-9872345​
julsineya [31]

Answer:

58121141

Step-by-step explanation:

99165+67894321= 67993486  

67993486-9872345= 58121141

6 0
3 years ago
Help me with this please
drek231 [11]
The answer is only C and D
6 0
3 years ago
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