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4 years ago

Which of the following is(are) the solution(s) to |x+8|=1

Mathematics

1 answer:

White raven [17]3 years ago

5 0

D. X = -7

Step 1: Subtract 8 from both sides.

x + 8 - 8 = 1 - 8

Answer:

x = -7

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You have a wire that is 38 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The o

Drupady [299]

Answer:16.71 cm

Step-by-step explanation:

Given

Length of wire L=38 cm

One piece is bent in the form of square and another in the form of circle

let x be the length of circle

therefore length of square side $\frac{38-x}{4}$

A=total area of square and circle

radius of circle $r=\frac{x}{2\pi }$

area of circle $A_c=\pi r^2=\pi \times (\frac{x}{2\pi })^2$

Area of square $A_s=(\frac{38-x}{4})^2$

$A=\pi \times (\frac{x}{2\pi })^2+(\frac{38-x}{4})^2$

To get the minimum value of A we get

$\frac{\mathrm{d} A}{\mathrm{d} x}=\frac{2x}{4\pi }-\frac{2(38-x)}{16}$

$\frac{\mathrm{d} A}{\mathrm{d} x}=0$

$\frac{x}{4\pi }=\frac{38-x}{16}$

$x=\frac{38\pi }{4+\pi }$

Therefore circumference of circle

$x=\frac{38\pi }{4+\pi }=\frac{119.396}{7.142}=16.717 cm$

8 0

3 years ago

What is the nearest tenth of 3.25

Cerrena [4.2K]

The answer is 3.3 because you round up if the digit next to the place you are rounding to is equal to or greater to 5.

7 0

3 years ago

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Anyone know the answer to this ??!

charle [14.2K]

Oh wait I think I remember this I’ll comment again if I remember

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3 years ago

Simplify<br> 8x - (4x – 3x)

Sloan [31]

Answer:

8x - 1x

Step-by-step explanation:

Just do the stuff in the ()'s first, for this it's is 4x - 3x, then rewrite the problem and it is simplified

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3 years ago

Find the surface area of the figure below round your answer to the nearest tenth in necessary

erik [133]

Answer:

1548.3 $m^{2}$

Step-by-step explanation:

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3 years ago

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