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Liono4ka [1.6K]

3 years ago

11

CAN SOMEONE PLEASE HELP ME

1 answer:

noname [10]3 years ago

8 0

Answer:

sorry about being late

Step-by-step explanation:

Volume = length * width * height in $cm^{3}$

V1 = 11* 6 * 5 = 330

V2 = 27*6*5= 810

v3 = 11*6*3 = 198

V4 = 11*0.5*5= 27.5

The direction are unclear if that's what they have in mind for the size of the box.... just plug in the asked for numbers if those are not correct. :)

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A variable force of 3x−2 pounds moves an object along a straight line when it is x feet from the origin. Calculate the work done

Verdich [7]

Answer:

$2.70J$ .

Step-by-step explanation:

We have been given that a variable force of $3x^{-2}$ pounds moves an object along a straight line when it is x feet from the origin. We are asked to find the work done in moving the object from x = 1 ft to x = 10 ft.

We know that $dW=Fdx$ , where F represents force.

$dW=3x^{-2}dx$

Now, we will integrate both sides of equation as:

$\int\limits{dw} =\int\limits^{10}_1 {3x^{-2} \, dx$

Take the constant out:

$\int\limits{1dw} =3\int\limits^{10}_1 {x^{-2} \, dx$

$w =3\int\limits^{10}_1 {x^{-2} \, dx$

Upon applying power rule of integrals, we will get:

$w =3\/[ \frac{x^{-2+1}}{-2+1} ]^{10}_1$

$w =3[ \frac{x^{-1}}{-1} ]^{10}_1$

$w =3[ -\frac{1}{x} ]^{10}_1$

$w =3[ -\frac{1}{10} -(-\frac{1}{1})]$

$w =3[ -\frac{1}{10}+\frac{10}{10})]$

$w =3[\frac{9}{10}]$

$w=2.70$

Therefore, the work done by the object is $2.70J$ .

8 0

3 years ago

Horatio is solving the equation -3/4+2/5x=7/20x-1/2. Which equations represent possible ways to begin solving for x? Check all t

trapecia [35]

Answer:

2/5x=7/20x+1/4
-3/4=-1/20x-1/2
-3/4+1/20x=-1/2

Step-by-step explanation:

If you add 3/4 to both sides of the equation, you get ...

... 2/5x = 7/20x + 1/4 . . . . first choice

If you subtract 2/5x from both sides of the equation, you get ...

... -3/4 = -1/20x -1/2 . . . . third choice

If you subtract 7/20x from both sides of the equation, you get ...

... -3/4 +1/20x = -1/2 . . . . last choice

Choices 2 and 4 are erroneous versions of choices 1 and 3, so do not apply.

4 0

3 years ago

Read 2 more answers

Tommy has a piece of toast that has butter on one side, and he dropped it twice. Both times, it landed with the butter side up.

Kryger [21]

Its a one over two chance that the piece of toast won't land on the side with butter

6 0

3 years ago

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A city planner is mapping out some new features for a triangle park. She sketches the park on a grid paper. The coordinates of t

Alecsey [184]

Answer:

Perhaps, she is interested in finding the area enclosed by this triangular park.

Step-by-step explanation:

The area of the triangle enclosed by the three points

A(1,1), B(1,4) and C(-3,4) in this question will be given by

|Ax ( By − Cy)+ Bx(Cy−Ay)+ Cx(Ay− By) |/2

=|1(4-4)+1(4-1)+-3(1-4)|/2=10/5= 5 sq. units.

5 0

3 years ago

The length of a rectangle is 3 times it’s width. The perimeter is 32 ft

saw5 [17]

Answer:

W=4 L=12

Step-by-step explanation:

If width is X length is 3x

(x+3x)*2

4x*2=8x

8x=32

x=4

8 0

3 years ago