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VARVARA [1.3K]
3 years ago
15

Solve using the substitution method. Y+2x=7 14-4x=2y

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
8 0
Hello

14-4x=2y   divide 2 to both sides VVVVV7-2x=y    you will need this on the next step-----------------------------------------------------y+2x=7y=7-2x(7-2x)+2x=7 ------->  7-2x+2x=7                               7=7Have a nice day
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the vertex of this parabola is at (2,-1). when the y-value is 0, the x-value is 5. what is the coefficient of the squared term i
timama [110]
We know that

case a)
the equation of the vertical parabola write in vertex form is
y=a(x-h)²+k,
where (h, k) is the vertex.

Using our vertex, we have:
y=a(x-2)²-1
We know that the parabola goes through (5, 0),

so
we can use these coordinates to find the value of a:
0=a(5-2)²-1
0=a(3)²-1
0=9a-1

Add 1 to both sides:
0+1=9a-1+1
1=9a
Divide both sides by 9:
1/9 = 9a/9
1/9 = a
y=(1/9)(x-2)²-1

the answer is
a=1/9


case b)
the equation of the horizontal parabola write in vertex form is
x=a(y-k)²+h, 
where (h, k) is the vertex.

Using our vertex, we have:
x=a(y+1)²+2, 
We know that the parabola goes through (5, 0),

so
we can use these coordinates to find the value of a:
5=a(0+1)²+2
5=a+2
a=5-2
a=3
x=3(y+1)²+2

the answer is
a=3

see the attached figure 

3 0
3 years ago
4. Nicole has 3,874 pieces of candy to hand
Zina [86]

Answer: 149 pieces of candy

Step-by-step explanation:

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3 0
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Answer:

d≈3.5

Step-by-step explanation:

d= C/π =11/π≈3.50141

Brainliest plz

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konstantin123 [22]
The answer is 7
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A Truck weighs 3 tons how many pounds does it weigh?
Monica [59]

Answer:

6000 pounds

Step-by-step explanation:

5 0
2 years ago
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