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3 years ago

Which point represents the complex number - 3 + 2i

Mathematics

2 answers:

il63 [147K]3 years ago

5 0

Answer:

Step-by-step explanation:

The complex number - 3 + 2i can be represented in coordinate form as

(- 3, 2 ) → D on the graph

Vika [28.1K]3 years ago

4 0

Answer:

Point A.

Step-by-step explanation:

A complex number is composed of 2 parts: it's Real Part often denoted with Re(z), where z - complex number, Im(z) - imaginary part of z.

The number can be thought of as a point on the xy axis where Re(z) serves as the x coordinate and Im(z) serves as the y component, thus giving you the position. (Re(z), Im(z))

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Quadratic formula to find the zeros <br> b^2-4b+4=0

Lunna [17]

Answer:

Step-by-step explanation:

Remark

I don't think you need the quadratic formula for this equation. It just factors into (b - 2)(b - 2), but I'll do it because you requested it.

Formula

$\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a}$

Givens

a = 1

b = - 4

c = 4

Solution

x = - - 4 +/- sqrt((-4^2) - 4*1*4)

====================

2*1

x = 4 +/- sqrt (16 - 16)

==========

x = 4/2

x = 2

There are 2 roots but both of them are the same. Some teachers say there is only 1 root. I'm in that group.

5 0

3 years ago

the density of a certain material is such that weighs 6900 grams for every 4.5 quarts of volume express this density in pounds p

dlinn [17]

Answer:

$d=101.4\ \text{pounds}/\text{feet}^3$

Step-by-step explanation:

Given that,

Mass of material, m = 6900 grams

Volume of the material, V = 4.5 quarts

We need to find the density in pounds per cubic foot

We know that,

1 pound = 453.59 grams

⇒ 6900 grams = 15.21 pounds

Also, 1 cubic foot = 29.92 quarts

4.5 quart = 0.15 feet³

Density = mass/volume

$d=\dfrac{15.21\ \text{pounds}}{0.15\ \text{feet}^3}\\\\d=101.4\ \text{pounds}/\text{feet}^3$

Hence, the density of the material is $101.4\ \text{pounds}/\text{feet}^3$

3 0

3 years ago

Help‼️‼️‼️Answer part 3,4,5 and give several equations for each show your work‼️

soldi70 [24.7K]

Answer:

I'd really love to help you but the way you asked made you sound so needy and that just made me not want to answer sorry...

Step-by-step explanation:

5 0

4 years ago

Solve the inequality 3(x+2)>0

Goryan [66]

Distribute
3x+6>0

Subtract 6 from both sides
3x>-6

Divide both sides by 3
x>-2

Final answer: x>-2

4 0

4 years ago

Which monomial function has a minimum value? y=5x^10 y=-4x^11 y=-x^12 y=6x^7

strojnjashka [21]

<span>y=-x^12 has the minimum value.</span>

8 0

3 years ago

Read 2 more answers