All categories

3 years ago

Which of the following expressions is the conjugate of a complex number with −6 as the real part and −5i as the imaginary part?

2 answers:

5 0

The complex number is -6-5i. The conjugate means just flip the sign of the imaginary part of the complex number. -6+5i is the answer.

MrMuchimi3 years ago

3 0

Answer:

Conjugate of complex number is -6 + 5i

Step-by-step explanation:

a complex number with −6 as the real part and −5i as the imaginary part

For a complex number a+ib

a is the real part and b is the imaginary part

a complex number with −6 as the real part and −5i as the imaginary part can be written as -6-5i

the conjugate of a+ib is a-ib

The conjugate pf -6 -5i is -6+5i

You might be interested in

I don’t understand this

SashulF [63]

Answer:

9 to the 5th power

Step-by-

7 0

3 years ago

Read 2 more answers

Which best estimate of the sum of 5 1/5 and 8 5/6

Reika [66]

Answer:

14 1/30

Step-by-step explanation:

convert the fractions so that the LCF is the denominator

1/5---->6/30

5/6----->25/30

5 6/30+8 25/30

13 31/30

14 1/30

7 0

2 years ago

What is the surface area of a cylinder that has the following measurements? area of each base: 50.24 ft2 area of lateral surface

irinina [24]

Answer:

TSA = 175.84 ft²

Step-by-step explanation:

We are given;

Lateral surface area; A_L = 75.36 ft²

Area of base; A_b = 50.24 ft²

Height of cylinder; h = 3ft

Formula for total surface area of Cylinder is;

TSA = 2πr² + 2πrh

Now, lateral surface area is given by the formula; A_L = 2πrh

Area of base is given by the formula;

A_b = πr²

Thus, let's apply these 2 formulas to the formula for total surface area;

TSA = 2(Area of base) + Lateral surface area

TSA = (2 * 50.24) + 75.36

TSA = 175.84 ft²

3 0

3 years ago

Rooter Plus charges a $25 service fee plus $40 per hour of work done. Is this a proportional or non-proportional relationship?

Dominik [7]

Answer:

Non-proportional; the rate of change is $40/hour

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u>and the line passes through the origin</u>

Let

x -----> the number of hours

y ----> The total charge in dollars

The equation of the line in slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

we have

$m=40\ \$/h\\b=\$25$

substitute

$y=40x+25$

This relationship is not proportional, because the line not passes through the origin

therefore

Non-proportional; the rate of change is $40/hour

5 0

2 years ago

Father is four times as old as Mary. Five years ago he was seven times as old. How old is the father now?

melamori03 [73]

Answer:

If Father is four times older than Mary, that would be 4 times 10-- which equals 40. Five years ago, Mary must have been 5 years old. So, multiply 7 and 5 and you'll get 35! Father would have been 35 years old.

I hope this helps!

Step-by-step explanation:

7 0

2 years ago