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TiliK225 [7]
3 years ago
13

What current flows through a hair dryer plugged into a 120-volt circuit if it has a resistance of 30

Mathematics
2 answers:
never [62]3 years ago
6 0

Answer:

current = 4 A

Step-by-step explanation:

here's the solution,

we know :-

current =  \frac{potential \: diffrence}{resistance}

=》

i =  \frac{120}{30}

( here, i represent current)

=》

i = 4

so, current flowing in the circuit = 4 amperes

motikmotik3 years ago
3 0
Ircuit contains a 1.5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current. I = V ÷ R = 1.5V ÷ 3Ω = 0.5A. 5. What current flows through a hair dryer plugged into a 120 Volt circuit
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How many solutions does the system of equations below have?y = -10x + 7/3y = -10x + 1/10No solutionOne solutionInfinitely many s
Mekhanik [1.2K]

We re-write the system of equations by using the fact that we need the y-values to be the same, so we equal them:

- 10 x + 7/3 = - 10 x + 1/10

We notice then, as we try to solve for the one unknown left (x), that as we add 10 x on both sides of our new equation, all the terms in "x" go away, as shown below:

- 10 x + 10 x + 7/3 = - 10 x + 10 x + 1/10

combine like terms:

7/3 = 1/10

so we notice we have ended up with a ridiculous solution, a statement that tells us that 7/3 equals 1/10 which is mathematically a FALSE statement. Therefore, we conclude that the system has NO solutions, given that there are no possible x or y values that can ever produce a logical answer.

We select therefore the option No solution, among the list of answers.

5 0
2 years ago
(free points)
asambeis [7]

Answer:

yeah but give the lamp to the homie below me

3 0
3 years ago
The width of a rectangle is 4 feet shorter than its length. The area of the rectangle is 42 ft.². Find the length and width. Rou
navik [9.2K]

Answer:

Length ≈ 20 feet (rounded down nearest 10th feet)

Width ≈ 20 feet (rounded up to nearest 10th feet)

Step-by-step explanation:

Find Length and Width

Width = Length - 4 feet

Area = 42 ft²

Area = L x W

42 = L x (L - 4)

42 = 2L - 4

42 + 4 = 2L - 4 + 4

2L = 46

2L/2 = 46/2

L = 23

L ≈ 20 feet

Width = 23 - 4

Width = 19 feet

Width ≈ 20 feet

4 0
3 years ago
37°<br> 10<br> X<br> 53°<br> у<br> Find the value of x to the nearest tenth.
olya-2409 [2.1K]

9514 1404 393

Answer:

  x ≈ 8.0

  y ≈ 6.0

Step-by-step explanation:

For x, the relevant trig relation is ..

  Sin = Opposite/Hypotenuse

  sin(53°) = x/10

  x = 10·sin(53°)

  x ≈ 8.0

__

The value of y can be found in the same way using the 37° angle, or the cosine function can be used.

  y = 10·sin(37°) ≈ 6.0

  y = 10·cos(53°) ≈ 6.0

_____

<em>Additional comment</em>

This question only asks for the value of x. We expect there may be some versions of this question in which the value of y is requested, or in which the positions of x and y are switched. Please compare your question carefully before you copy the answer.

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You may notice this is a 3-4-5 triangle with a scale factor of 2.

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3 years ago
I need help please?!!!!
Oksanka [162]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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