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3 years ago

Which statement is true regarding DC current?

Mathematics

2 answers:

DerKrebs [107]3 years ago

6 0

I think it's this answer <span>C.A high voltage current can be transformed into a low voltage current.</span>

Mila [183]3 years ago

3 0

Answer:

B.There can only be one voltage supplied.

Step-by-step explanation:

Moving electrons constitute current. When the electrons move in single direction, it is known as Direct current (DC). When the electrons move back and forth, it is known as Alternating current (AC).

Voltage transferred from the power plants to out home is in the form of AC. A high voltage AC can be converted to low voltage AC and vice-versa using transformer.

DC is used for very small power requirement as such in cells of clocks, remotes etc. One single voltage can be supplied using DC. It cannot be increased or decreased.

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If the measure of angle<br> A = 55 degrees, b = 12,<br> and c= 7, find a.

Nikitich [7]

The answer probably is 55 otherwise I didn’t understand your question.

6 0

2 years ago

What is the approximate area of the regular pentagon?

Anastasy [175]

Area of the pentagon: 342 cm2

Step-by-step explanation:

The figure of the pentagon is missing: find it in attachment.

The area of the pentagon can be seen as the area of 5 equal triangles, each of them having a base equal to the length of the side of the pentagon,

L = 14.1 cm

and the height of each triangle can be found by using Pythagorean's theorem:

$h=\sqrt{12^2-(\frac{L}{2})^2}=\sqrt{12^2-(\frac{14.1}{2})^2}=9.7 cm$

The area of each of the 5 triangles is

$A'=\frac{1}{2}Lh$

Therefore, the area of the pentagon is 5 times this area:

$A=5A'=\frac{5}{2}Lh=\frac{5}{2}(14.1)(9.7)=342 cm^2$

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7 0

3 years ago

Read 2 more answers

A researcher is interested in testing the perceived effort (PE) of runners under three different terrains. PE is measured on a s

dsp73

I don’t know i’m only in eighth grade

5 0

2 years ago

22.47 divided by 3.4

Shalnov [3]

About 6.6088 (rounded to the nearest thousandth)

3 0

3 years ago

Please help me with this question!! Show steps

katovenus [111]

Answer: Slope is -1

Using the slope formula, we get

m = (y2 - y1)/(x2 - x1)

m = (0 - 4)/(2 - (-2))

m = (0 - 4)/(2 + 2)

m = -4/4

m = -1

What's going on here is that we subtract the y values 0 and 4 to get -4. This means that we dropped 4 units vertically to go from A to B. This is the rise. So rise = -4

The run is 4 because we moved 4 units to the right to go from A to B. This is found algebraically when we subtracted the x coordinates, so 2 - (-2) = 2 + 2 = 4.

Slope = rise/run = -4/4 = -1

You have the correct answer, assuming you wrote -1. I think your teacher just marked it wrong because you forgot to show steps.

3 0

3 years ago