3 years ago

Please help me with this!!!

Mathematics

1 answer:

krok68 [10]3 years ago

3 0

Answer:

the answer is A because if it is raised to the power greater than one and is added it will be greater than1

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julia-pushkina [17]

Answer:

Step-by-step explanation:

6+x, when x = 3

6+(3)

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2 years ago

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A rectangle has a length of x + 7 and a width of x-2. Which equation below describes the perimeter, P, of

valkas [14]

Answer:

P = 4x + 10

Step-by-step explanation:

perimeter of a rectangle = 2( width + length )

P = 2 ( x - 2 + x + 7 )

P = 2 ( x + x + 7 - 2 )

P = 2 ( 2x + 5 )

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2 years ago

The power generated by an electrical circuit (in watts) as function of its current x (in amperes) is modeled by: P(x)=-12x^2 +12

Minchanka [31]

Given:

The power generated by an electrical circuit (in watts) as function of its current x (in amperes) is modeled by:

$P(x)=-12x^2+120x$

To find:

The current that will produce the maximum power.

Solution:

We have,

$P(x)=-12x^2+120x$

Here, leading coefficient is negative. So, it is a downward parabola.

Vertex of a downward parabola is the point of maxima.

If a parabola is $f(x)=ax^2+bx+c$ , then

$Vertex=\left(\dfrac{-b}{2a},f(\dfrac{-b}{2a})\right)$

In the given function, a=-12 and b=120. So,

$-\dfrac{b}{2a}=-\dfrac{120}{2(-12)}$

$-\dfrac{b}{2a}=-\dfrac{120}{-24}$

$-\dfrac{b}{2a}=5$

Putting x=5 in the given function, we get

$P(5)=-12(5)^2+120(5)$

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$P(5)=-300+600$

$P(5)=300$

Therefore, 5 watt current will produce the maximum power of 300 amperes.

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2 years ago

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Inessa [10]

Answer:

Good luck in Geometry my guy!

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3 years ago

What is the pattern in this sequence?<br><br> 0.001,0.01,0.1,1

chubhunter [2.5K]

Answer:

The one moves up a tenth until it gets to 1.

Step-by-step explanation:

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