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slavikrds [6]
3 years ago
13

Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function: y=4x^2-8x-3

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

D. x= -1; vertex: (-1,-7) 
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topjm [15]

Answer:

f(x) = -8

Step-by-step explanation:

f(x) = x² + 2x – 8

f(x) = (-2)² + 2(-2) – 8

f(x) = (-2)² + 2(-2) – 8

f(x) = 4 + (-4) – 8

f(x) = 4 – 4 – 8

f(x) = 0 – 8

f(x) = -8

I hope this helps

8 0
2 years ago
HELP!! PLEASE!!!!!
aleksandr82 [10.1K]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

n=5, -5

5 0
2 years ago
Read 2 more answers
Which is the constant term in the equation given in standard from 5x+3y=15
Alisiya [41]

Answer:

15

Step-by-step explanation:

The constant is the term without the variable

5x+3y=15

15 is the constant

4 0
3 years ago
From the set {80, 19, 11}, use substitution to determine which value of x makes the equation true. 8x = 88 A. none of these B. 1
mel-nik [20]

Answer:

  C.  11

Step-by-step explanation:

Substituting, we have ...

  8{80, 19, 11} ?= 88

  {640, 152, 88} ?= 88

The value from the set that makes the equation true is x = 11.

_____

<em>Alternate methods of solution (other than substitution)</em>

It can be easier to make use of your knowledge of factoring:

  8x = 8·11

  x = 11

Or to make use of your knowledge of numbers (place value):

  8·10 = 80

so x will not be very different from 10.

3 0
3 years ago
At the end of the summer, I decide to drain the swimming pool
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