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Klio2033 [76]
3 years ago
8

Help with this plz.Solve the system of equations using the elimination method.​

Mathematics
2 answers:
forsale [732]3 years ago
5 0

Let's solve your system by elimination.

8x+y=−16;3x−y=5

8x+y=−16

3x−y=5

Add these equations to eliminate y:

11x=−11

Then solve: 11x=−11 for x:

11x=−11

11x

11

=

−11

11

(Divide both sides by 11)

x=−1

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

Write down an original equation:

8x+y=−16

Substitute: −1 for x in 8x+y=−16:

(8)(−1)+y=−16

y−8=−16(Simplify both sides of the equation)

y−8+8=−16+8(Add 8 to both sides)

y=−8

Answer:

x=−1 and y=−8

dimaraw [331]3 years ago
3 0

Answer:Multiply each equation by a suitable number so that the two equations have the same leading coefficient.

Subtract the second equation from the first.

Solve this new equation for y.

Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x.

Step-by-step explanation:

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DedPeter [7]

9514 1404 393

Answer:

  3. vertical stretch by a factor of 2; shift right 1 and down 1

  4. shift left 4 and up 4 (no stretch or shrink)

Step-by-step explanation:

The vertex form equation is ...

  y = a(x -h)^2 +k

It represents a vertical stretch of the parent function by a factor of 'a', a right shift of 'h', and an upward shift of 'k'.

Compare the the given equations to the above form to see the transformations.

__

3. (a, h, k) = (2, 1, -1)   ⇒   vertical stretch by a factor of 2; shift right 1, down 1

4. (a, h, k) = (1, -4, 4)   ⇒   no vertical stretch; shift left 4, up 4

6 0
3 years ago
Could I please have the answer to this problem? Could I also please have an explanation, as I'm confused and I don't understand.
tatiyna

Answer:

B is the answer as it's means intersection and none of the numbers intersect x and y

8 0
3 years ago
Read 2 more answers
Gabrielle is 10 years younger than Mikhail. The sum of their ages is 66. What is Mikhail's age?
inysia [295]

Answer:

Mikhail is 38 years old.

Step-by-step explanation:

I found that Gabrielle is 28 and Mikhail is 38.

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7 0
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The ratio of the radii of two circles C1 and C2 is 1.5.
IRINA_888 [86]

Answer:

Below in bold.

Step-by-step explanation:

The circumference is one dimensional so the ratio  is the same as the radii,

1.5.

The areas are 2 dimensional so the ratio is 1.5^2 = 2.25.

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