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Art [367]
3 years ago
15

Show all Work; Solve using the substitution method: y=x-6 3x-2y=8

Mathematics
1 answer:
Shkiper50 [21]3 years ago
3 0

Step-by-step explanation:

y = x - 6...(1) \\  3x - 2y = 8...(2) \\ substituting \: y = x - 6 \: in \: equation \: (2) \\ 3x - 2(x - 6) = 8 \\  3x - 2x + 12 = 8 \\ x = 8 - 12 \\ x =  - 4 \\  \implies \: y = x - 6 =  - 4 - 6 =  - 10 \\  \therefore \: y =  - 10 \\ \therefore \:  \{x, \:  \: y \} =  \{ - 4, \:  \:  - 10 \}

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Given the quadratic equation <img src="https://tex.z-dn.net/?f=y%20%3D%202%28x%20-1%29%5E%7B2%7D%20%2B%208" id="TexFormula1" tit
Sunny_sXe [5.5K]

Answer:

Part 1) "a" value is 2

Part 2) The vertex is the point (1,8)

Part 3) The equation of the axis of symmetry is x=1

Part 4) The vertex is a minimum

Part 5) The quadratic equation in standard form is y=2x^{2}-4x+10

Step-by-step explanation:

we know that

The equation of a vertical parabola into vertex form is equal to

y=a(x-h)^{2}+k

where

(h,k) is the vertex of the parabola

if a > 0 then the parabola open upward (vertex is a minimum)

if a < 0 then the parabola open downward (vertex is a maximum)

The equation of the axis of symmetry of a vertical parabola is equal to the x-coordinate of the vertex

so

x=h

In this problem we have

y=2(x-1)^{2}+8 -----> this is the equation in vertex form of a vertical parabola

The value of a=2

so

a>0 then the parabola open upward (vertex is a minimum)

The vertex is the point (1,8)

so

(h,k)=(1,8)

The equation of the axis of symmetry is x=1

The equation of a vertical parabola in standard form is equal to

y=ax^{2}+bx+c

Convert vertex form in standard form

y=2(x-1)^{2}+8

y=2(x^{2}-2x+1)+8

y=2x^{2}-4x+2+8

y=2x^{2}-4x+10

see the attached figure to better understand the problem

7 0
3 years ago
Help with question 3
lys-0071 [83]
What are the questions??
7 0
3 years ago
Find the sum of two consecutive numbers if the smaller one is 43
Alexxx [7]

Answer:

87

Step-by-step explanation:

Smaller number = 43

Bigger number= 44

Sum = 43+44

8 0
2 years ago
Read 2 more answers
Can someone help me I’ll give u 20 points
mamaluj [8]

Answer:

#1. X=3 and #2. Y=9

Step-by-step explanation:

Glad i could help, give me a follow, so if you need help with any other question, im here.

3 0
3 years ago
Read 2 more answers
PLEASE HELP IMMEDIATELY
Paha777 [63]
The answer is g = 6w.

since the number of grey pigeons is 6 times the white pigeons, it means the white pigeons are being multiplied to find the number of grey pigeons
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3 years ago
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