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Andrews [41]
3 years ago
12

What is the answer

Mathematics
1 answer:
Andrej [43]3 years ago
7 0

Answer:

  • V = IR
  • 12 volts

Step-by-step explanation:

Starting with ...

  I = V/R

Multiply by R to find V:

  IR = V

The equation is ...

  V = I·R

__

Using the given values for I and R, we have ...

  V = (2)(6)

  V = 12 . . . required voltage (volts)

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The first three steps of completing the square to solve the quadratic equation x2 +4x-6=0
hodyreva [135]

Answer:


Step-by-step explanation:

1.  Move the 6 to the other side:   x^2 +4x                        =6

2.  Square half the coefficient of the x term:  (4/2)^2 = 4

3.  Add this 4, and then subtract this 4, from x^2 + 4x:

     x^2 +4x + 4 - 4                       =6

4.  Rewrite this perfect square as the square of a binomial:

      (x + 2)^2   -   4   = 6

5.  Add 4 to both sides:    (x + 2)^2 =  10

6.  Find the sqrt of both sides:  x + 2 = √

8 0
3 years ago
What is the focus of the parabola? <img src="https://tex.z-dn.net/?f=y%3D%20%5Cfrac%7B1%7D%7B4%7D%20x%5E%7B2%7D%20-x%2B3" id="Te
OlgaM077 [116]
We know that
the equation of the parabola is of the form
y=ax²+bx+c
in this problem
y=1/4x²−x+3
where
a=1/4
b=-1
c=3
 the coordinates of the focus are
(-b/2a,(1-D)/4a)
where D is the discriminant b²-4ac
D=(-1)²-4*(1/4)*3-----> D=1-3---> D=-2
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> 2

y coordinate of the focus
(1-D)/4a------> (1+2)/(4/4)---> 3

the coordinates of the focus are (2,3)
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2 years ago
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Answer:

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Step-by-step explanation:

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Musya8 [376]
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Crank

Answer:

(rounded)17.2=Q

Step-by-step explanation:

Q= 13/cos41

4 0
2 years ago
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