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2 years ago

PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

Mathematics

1 answer:

pishuonlain [190]2 years ago

6 0

Answer:

3-i

Step-by-step explanation:

1-5i + 2 +4i

We add the real parts

1+2 =3

We add the imaginary parts

-5i + 4i = -1i

The complex number is

3-i

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Can someone please answer my recent question

Fittoniya [83]

Answer:

Step-by-step explanation:

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2 years ago

A manufacturer cuts squares from the corners of a rectangular plece of sheet metal that measures 2 inches by 7 inches (see Figur

Vladimir79 [104]

Answer:

The value of x that maximizes the volume enclosed by this box is 0.46 inches

The maximum volume is 3.02 cubic inches

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The volume of the open-topped box is equal to

$V=LWH$

where

$L=(7-2x)\ in\\W=(2-2x)\ in\\H=x\ in$

substitute

$V=(7-2x)(2-2x)x$

Convert to expanded form

$V=(7-2x)(2-2x)x\\V=(14-14x-4x+4x^{2})x\\V=14x-14x^2-4x^2+4x^{3}\\V=4x^{3}-18x^{2} +14x$

using a graphing tool

Graph the cubic equation

Remember that

The domain for x is the interval -----> (0,1)

Because

If x>1

then

the width is negative (W=2-2x)

The maximum is the point (0.46,3.02)

see the attached figure

therefore

The value of x that maximizes the volume enclosed by this box is 0.46 inches

The maximum volume is 3.02 cubic inches

8 0

2 years ago

Which is closest to the total surface area of a cylinder with a radius of 5 inches and a height that is equal to its diameter?

Pie

For this case, the surface area of the cylinder is given by:
A = 2 * pi * r * h + 2 * pi * r ^ 2
Where.
r: cylinder radius
h: cylinder height
Substituting values we have:
A = 2 * 3.14 * 5 * (2 * 5) + 2 * 3.14 * 5 ^ 2
A = 471
Answer:
The total surface area of the cylinder is:
A = 471

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2 years ago

Read 2 more answers

Vic and Paulo work on different levels in an underground coal mine. Vic's level is at an elevation of −70.51 meters relative to

lisov135 [29]

Answer:

A. Paulo's level is −34.42 meters lower than Vic's level.

Step-by-step explanation:

-104.93 - (-70.51) = -104.93 + 70.51 = -34.42

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2 years ago

Do question a,b,c,d plz

julsineya [31]

A) 13.25
B) 164.64
C) 57.1
D) 145173.954289 or 381.0172

A good calculator website is https://www.cymath.com/

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2 years ago