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3 years ago

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RAPIDOOOOOOO PLS In a hydraulic jack, the pipe below the load has an area of 4 m2, and the pipe through which the input force tr

ansmits has an area of 0.1 m2. What input force is necessary to balance a load of 9,000 N? A) 90 N B) 225 N C) 450 N D) 900 N

1 answer:

vazorg [7]3 years ago

7 0

Answer:

heheheheheheheh

Step-by-step explanation:

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When six is subtracted from five times a number, the result is 9

lozanna [386]

You do 9=5y-6. And then solve for y. It’s is 3.

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I'm stuck, please help me

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60/48
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Tom,Scott and dawn sold cookies at the school fair.

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First of all work out how many tom and scott sold.
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3 years ago

Which equation represents a parabola that opens upward, has a minimum at x = 3, and has a line of symmetry at x = 3?

densk [106]

Answer:

$A.\ y = x^2 - 6x + 13$ is the correct answer.

Step-by-step explanation:

We know that vertex equation of a parabola is given as:

$y = a(x-h)^2+k$

where $(h,k)$ is the vertex of the parabola and

$(x,y)$ are the coordinate of points on parabola.

As per the question statement:

The parabola opens upwards that means coefficient of $x^{2}$ is positive.

Let $a = +1$

Minimum of parabola is at x = 3.

The vertex is at the minimum point of a parabola that opens upwards.

$\therefore$ $h = 3$

Putting value of a and h in the equation:

$y = 1(x-3)^2+k\\\Rightarrow y = (x-3)^2+k\\\Rightarrow y = x^2-6x+9+k$

Formula used: $(a-b)^2=a^{2} +b^{2} -2\times a \times b$

Comparing the equation formulated above with the options given we can observe that the equation formulated above is most similar to option A.

Comparing $y = x^2 - 6x + 13$ and $y = x^2-6x+9+k$

13 = 9+k

k = 4

Please refer to the graph attached.

Hence, correct option is $A.\ y = x^2 - 6x + 13$

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3 years ago

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Brums [2.3K]

Answer:no

Step-by-step explanation:

5(3(10)+8)

5(30+8)

5(38)=190

8(10)+8

80+8

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