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Volgvan
3 years ago
13

I REALLY NEED HELP PLEASE HELP ME :(

Mathematics
1 answer:
o-na [289]3 years ago
6 0

Answer:

I may be wrong but I think 8 is your answer.

Step-by-step explanation:

(-1)^(3/7)  x 128^(3/7)

-1 x 128^3/7

128^(3/7) = 8

= 8

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Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq
Arte-miy333 [17]

Answer:

The perimeter of rectangle is 18\ cm

Step-by-step explanation:

Let

x------> the length of rectangle

y----> the width of rectangle

we know that

The area of the constructed figure is equal to

A=xy+2x^{2} +2y^{2}\\A=120\ cm^{2}

so

120=xy+2x^{2} +2y^{2} -----> equation A

x=y+5 -----> equation B

substitute equation B in equation A

120=y(y+5)+2(y+5)^{2} +2y^{2}\\120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\5y^{2}+25y+50-120=0\\5y^{2}+25y-70=0

using a graphing calculator to resolve the quadratic equation

the solution is

y=2\ cm

Find the value of x

x=2+5=7\ cm

Find the perimeter of rectangle

The perimeter of rectangle is equal to

P=2(x+y)\\P=2(7+2)=18\ cm

3 0
4 years ago
Two-inch cubes are stacked as shown in the drawing. What is the total surface area?
zavuch27 [327]

Note: <em>As you have not added the drawing. So, I assume the total number of two-inch cubes are stacked are FIVE. So, I will explain based on that assumption which anyways will clear your concept.</em>

Answer:

The total surface are will be: \boxed{120\:\:sq.in}

Step-by-step explanation:

As we know that

  • A cube contains 6 faces of equal area.

So, the total surface area of the cube is equal to 6 multiplied by the area of one of the faces.

As the edge of the cube = 2 inches

So, the area of one of the faces is:

                                                       2\times 2=4\:\:sq.in

Thus, the total area of the cube is:

                                                      6\times \:4=24\:\:sq.in

Assuming there are total 5 cubes which are stacked, so the total surface are will:

           24\times 5=120\:\:sq.in

Therefore, the total surface are will be: \boxed{120\:\:sq.in}                                                    

5 0
4 years ago
Read 2 more answers
What is the area of a triangle with a base of 15 inches and a height of 4 inches?
Darina [25.2K]

Answer:

I'd say C is the answer for this question.

Thank you

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
What is the area of the front of the prism
Nataly_w [17]

Answer:

Triangle

Step-by-step explanation:

6 0
3 years ago
How would you graph the solution to x/3 ≤ -2?​
Kaylis [27]

Answer:

x ≤ -6

Step-by-step explanation:

8 0
3 years ago
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