Find the conjugate of 9 - (-4i).

Answers

Answer 1

Answer:

9 + (-4i) = 9 - 4i


Related Questions

Evaluate 9 -- 5 when b 8.​

Answers

9+5=14 bx8=8b  Hope this helps sir or miss!

Is the product of fifteen negative integers positive or negative?

Answers

Answer:

the sign of the product of 15 negative numbers will be negative

Step-by-step explanation:

Heya mate!!

The product of odd numbers is odd and the product of even numbers is even.

so 15 is an odd number then the sign of product is odd

Hope this helps!!!

Find all solutions by factoring.
4v2 - 25v = 21

Answers

Answer:

(4v + 3) and (v - 7)

Step-by-step explanation:

First rewrite 4v2 - 25v = 21 as 4v^2 - 25v - 21.

Let's now analyze -25v and -21.  We need to identify two integers whose product is 21 and whose sum is -25.  

Note that factors of -21 are ±1, ±3, ±7 and ±21.  Factors of 4 (the coefficient of v^2) are ±1, ±2 and ±4.

Check out the following trial factors:   (4v + 3) and (v - 7).  Does this product come out to the given 4v^2 - 25v - 21?  Yes.   So the desired factors of 4v2 - 25v = 21 are (4v + 3) and (v - 7).  Note how (3)(-7) = -21 and how 4(-7) + 3v add up to -25, the coefficient of the v term.

Round 24,619,746 to the nearest hundred

Answers

Answer:

2,461,974

hope this helped

Answer:

[tex]24,619,700[/tex]

Step-by-step explanation:

[tex]24,619,746[/tex] to the nearest hundred

In the hundreds, it says 746. Since 46 is close 0, the answer would be [tex]24,619,700[/tex]. If the number was greater than 5 it answer would have been [tex]24,619,746[/tex] . But the number is 46. So that means your answer is

[tex]24,619,700[/tex]

Hope this helps!

Evaluate 6j+23+k/l−3, when j=3, k=7, and l=33.

Enter your answer in the box.

Answers

Answer:

37 7/33 or 37.212

Step-by-step explanation:

6j + 23 + k/l - 3

If j = 3, k = 7, and l = 33:

6 × 3 + 23 + 7/33 - 3

= 18 + 22 + 7/33 - 3

= 40 + 7/33 - 3

= 40 7/33 - 3

NOTE: Because 40 and 3 are whole numbers, 3 will be subtracted from 40.

= 37 7/33 or 37.212

If g(x)=x^2+4x-5, find g(-4) PLEASE HELP

Answers

Answer:

-5

Step-by-step explanation:

g(x)=x^2+4x-5

g(-4)=(-4)^2+4(-4)-5

g(-4)=(-4)(-4)+(-16)-5

g(-4)=16-16-5

g(-4)=0-5

g(-4)=-5

If x and y are consecutive positive integers and x2 – y2 = 11, what is the value of y?
E. 1
F. 3
G. 5
H. 6

please provide explanation


Answers

Answer:

y = 5

Step-by-step explanation:

We khow that x and y are consecutive integers and that x^2 is greater than y^2 since x^2-y^2=11

● so x is greater than y

● wich means that x = y+1

● x^2-y^2=11

● (y+1)^2-y^2 = 11

● y^2+2y+1-y^2=11

● 2y + 1 = 11

● 2y +1-1 = 11-1

● 2y = 10

●2y/2 = 10/2

● y = 5

She cools one sample of bacteria to a temp of - 51 degrees C and another to -76 degrees C. What was the temperature difference in the two experiments?

Answers

It is 25 C

76 - 51 = 25

what is 7.004 as a fraction

Answers

Answer: It's 176/25 or 7 remainder 1/25

Which of these is least likey to describe a distance below sea level? Whole Number ,Integer, Rational Number, Real Number​

Answers

Answer: A) Whole number

Explanation:

The set of whole numbers is {0,1,2,3,...} showing that negative values are not in this set. A distance below sea level is written as a negative (where positive values are above sea level). So you won't use the set of whole numbers for this type of problem.

In contrast, something like the set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ... } including negatives this time. For example, we can write -10 to indicate we're 10 feet below sea level. Rational numbers and real numbers can also be negative.

find the sum or difference -80+77​

Answers

Answer:

Step-by-step explanation:

-3 is the difference

A luxury liner leaves a port on a bearing of 110 degrees and travels 8.8 miles. It then turns due west and travels 2.4 miles. How far is the liner from the port, and what is its bearing from the port?

Answers

Answer:

Distance= 6.6 miles

Bearing= N 62.854°W

Step-by-step explanation:

Let's determine angle b first

Angle b=20° (alternate angles)

Using cosine rule

Let the distance between the liner and the port be x

X² =8.8²+2.4²-2(8.8)(2.4)cos20

X²= 77.44 + 5.76-(39.69)

X²= 43.51

X= √43.51

X= 6.596

X= 6.6 miles

Let's determine the angles within the triangle using sine rule

2.4/sin b = 6.6/sin20

(2.4*sin20)/6.6= sin b

0.1244 = sin b

7.146= b°

Angle c= 180-20-7.146

Angle c= 152.854°

For the bearing

110+7.146= 117.146

180-117.146= 62.854°

Bearing= N 62.854°W

Will mark brainliest

Answers

Answer:

Step-by-step explanation:

The quotient of Y and 6 is 29" translates to Y/6 = 29. Solve this for Y

Y/6 = 29

Y = 29*6

Y = 174

So the second option is good

Number 15 is most likely  the last option

Answer:

[tex] \boxed{ \bold{ \boxed{ \sf{1. \: \: \: \: \frac{y}{6} }}}}[/tex]

[tex] \boxed{ \bold{ \boxed{ \sf{ 2. \: \: \: - 8}}}}[/tex]

Step-by-step explanation:

1. Quotient is a term for a division.

Quotient of y and 6 is written as y / 6

2. - 2 - 6

Calculate it :

= -8

hope I helped!

Best regards! :D

can y’all please help me !!

Answers

It’s cut off at the =
So far I got -5x-6
I hope this helps

Given that events A and B are independent with P(A) = 0.4 and P(B) = 0.25,
determine the value of P(A and B), rounding to the nearest thousandth, if
necessary

Answers

Answer:

0.1

Step-by-step explanation:

To do this you would just multiply 0.4 and 0.25 which would get you 0.1

A mail carrier can deliver mail to 36 houses in 30 minutes. Mark wants to determine how many houses the carrier can deliver mail to in 7.5 minutes at this rate. He thinks that to find the answer, he should do the following. 1. First divide 36 houses by 30 minutes to find a unit rate of 1.2 houses per minute. 2. Then multiply 1.2 houses per minute by 7.5 minutes to get 9 houses. Which statement is correct?

Answers

Answer:

Mark’s method is correct, because even though it is impossible to deliver mail to 1.2 houses in a minute, 1.2 represents the unit rate of houses per minute.

Step-by-step explanation:

Just took the test.

Both the steps performed by Mark to determine ,the houses the carrier can deliver mail to in 7.5 minutes at this rate is correct .

What is unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

According to the question

A mail carrier can deliver mail = 36 houses

Time taken to deliver mail in 36 houses = 30 minutes

Mark wants to determine , the houses the carrier can deliver mail to in 7.5 minutes at this rate.

By using unitary method :

Step1: First divide 36 houses by 30 minutes to find a unit rate  

[tex]rate = \frac{36}{30}[/tex]

rate = 1.2 houses in a minute  

Step2: Then multiply the rate to the required time

i.e  1.2 * 7.5  = 9 houses

Hence , Both the steps performed by Mark to determine ,the houses the carrier can deliver mail to in 7.5 minutes at this rate is correct .

To know more about unitary method here:

https://brainly.com/question/21648365

#SPJ3

I need help with this question thx​

Answers

Answer: -5x^3 + 5y^3

Step-by-step explanation: The other parts cancelled out

Answer:

= -5x³ + 5y³

Step-by-step explanation:

4y³ - 5x³ - 1 - 4y³ - 6 + 7 + 5y³

= -5x³ + (4y³ - 4y³ + 5y³) + (- 1 - 6 + 7)

= -5x³ + (0 + 5y³) + (- 7 + 7)

= -5x³ + 5y³

A construction company showed that the strength, y, of concrete, measured
by the percent of design strength attained, depends on the length of time, x,
(in days) since it was poured.

This value can be approximated by the equation y = 2.8x + 17.

a) What is the y-intercept? What does it mean in this setting? Your answer should tell something about the strength of concrete.

b) What is the slope? What does it mean in this setting? Your answer
should tell something about the strength of concrete.

c) How long does it take before y = 100?

Answers

Answer:

  a) y-intercept = 17; initial design strength percentage

  b) slope = 2.8; increase in that percentage each day

  c) 29.6 days to 100% design strength

Step-by-step explanation:

a, b) The equation is in the form called "slope-intercept form."

  y = mx + b

where the slope is m, and the y-intercept is b.

Your equation has a slope of 2.8 and a y-intercept of 17.

The y-intercept is the percentage of design strength reached 0 days after the concrete is poured. The strength of the concrete when poured is 17% of its design strength.

The slope is the percentage of design strength added each day after the concrete is poured. The concrete increases its strength by 2.8% of its design strength each day after it is poured.

__

c) To find when 100% of design strength is reached, we need to solve for x:

  100 = 2.8x +17

  83 = 2.8x

  83/2.8 = x ≈ 29.6

The concrete will reach 100 percent of its design strength in about 30 days.

The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is three times the measure of the first angle. The third angle is 29 more than the second. Let x, y, and z represent the measures of the first, second, and third angles, respectively. Find the measures of the three angles.

Answers

Answers:x = 45y = 53z = 82

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

Explanation:

The three angles add to 180, so x+y+z = 180

The second and third angles add to 3 times the measure of the first, so y+z = 3x

The third angle is 29 more than the second, so z = y+29

----------------------------

The system of equations is

[tex]\begin{cases}x+y+z = 180\\\\y+z = 3x\\\\z = y+29\end{cases}[/tex]

For now, let's focus on the second and third equations only.

Start with y+z = 3x. Replace z with y+29 which is valid because of the third equation.

So we'll have

y+z = 3x

y+y+29 = 3x

2y+29 = 3x

Let's isolate y

2y+29 = 3x

2y = 3x-29

y = (3x-29)/2

y = 3x/2 - 29/2

y = 1.5x - 14.5

We'll use this later.

--------------------------

Go back first equation of the system. Plug in z = y+29

x+y+z = 180

x+y+y+29 = 180

x+2y+29 = 180

Then plug in y = 1.5x - 14.5 we found earlier

x+2y+29 = 180

x+2(1.5x-14.5)+29 = 180

x+3x-29+29 = 180

4x = 180

x = 180/4

x = 45

---------------------------

We can use this x value to find y

y = 1.5x - 14.5

y = 1.5*45 - 14.5

y = 53

and use this to find z

z = y+29

z = 53+29

z = 82

As a check, x+y+z = 45+53+82 = 180 to help confirm the answer. I'll let you check the other equations.

John writes 1/5 of a page in 1\10 of a minute how much time is it going to take for him to read a whole page

Answers

Answer:

2 pages/min

Step-by-step explanation:

Unit rate is:

  1/5 page        1 * 10

------------------ = --------- page/min = 2 pages/min

 1/10 min           5 * 1

Answer:

30 seconds

Step-by-step explanation:

1/10 of a minute: 6 seconds

60/10 = 6

6x10 = 60

now, if 6 seconds is 1/5 of the page you need to multiply

6 x 5 = 30 seconds

it takes him 30 seconds to write a page

What are the numerical measures of each angle
in the diagram?
<1and <3 measure
degrees
<2 and <4 measure
degrees.
(3x - 1)
1
3
2
(2x + 9)

Answers

Answer:

angle 1 and 3 are equal by vertically opp. angle

3x-1 = 2x +9

3x-2x = 9+1

x = 10

put the value of x in any equation

3(10)-1 = 29

angle 1 = angle 3 = 29

angle 2 + angle 3 = 180 ° (linear pair)

angle 2 = 180 -29

angle 2 = 149

angle = angle 3 = 149.

Hope it helps

1.1.31
Determine whether the equation defines y as a function of x.
y = 3x² + 5x-4
Does the equation define y as a function of x?
Yes
No

Answers

Answer:yes

Step-by-step explanation:well its just yes so your welcome

I need some help on this

Answers

Answer:

When we are multiplying the same number, let it be n, m times, what we do is:

[tex]n^m[/tex], where n is the base and m the exponent.

In this case we have 4 fives, 2 threes, 3 x and 1 y which are being multiplied , so we can convert them to exponents:

4 fives: [tex]5^4[/tex]

2 threes: [tex]3^2[/tex]

3 x: [tex]x^3[/tex]

1 y: y

Then we multiply all: [tex]5^4*3^2*x^3y[/tex]

What is the equation of the linear model shown?


A. y = 0.8x + 4


B. y = 1.25x − 0.5


C. y = −0.8x + 20


D. y = 0.8x + 0.4

Answers

Answer:

A. y = 0.8x + 4

Step-by-step explanation:

i just took the test

The equation of the linear model shown is A. y = 0.8x + 4

A linear model refers to a model where a response variable is being described. It should be noted that the response should be a continuous variable

The linear model is the framework for the set of models that predict a quantitative dependent variable through the independent variables given.

Based on the diagram, the equation of the linear model shown is y = 0.8x + 4

Read related link on:

https://brainly.com/question/16317786

What is the height of BA?

Answers

Answer:

10 cm

Step-by-step explanation:

2/10=x/50

cross multiply

2*50=x*10

100÷10=x

x=10

A cyclist rides her bike at a speed of 18 miles per hour. What is this speed in kilometers per hour? How many kilometers will the cyclist travel in 2 hours? In
your computations, assume that I mile is equal to 1 kilometers. Do not round your answers.


Speed: ___km/h

Distance traveled in 2 hours :

__km

Answers

Answer: 110

Step-by-step explanation:

Answer:

Step-by-step explanation:

PLease Help! I'm Stuck

Answers

We can solve this problem in two ways.

1. From the description we conclude that the described sequence is a geometric sequence where the first term a₁ = 2 and common ratio r = 3, so:

[tex]\boxed{a_n=2\cdot3^{n-1}}[/tex]

Answer D.

2. The easiest way. We know that a₁ = 2, so let's substitute n = 1 for each of the possible answers:

A. 3·2ⁿ = 3·2¹ = 3·2 = 6 - Wrong

B. 2·3ⁿ = 2·3¹ = 2·3 = 6 - Wrong

C. 3·2ⁿ⁻¹ = 3·2¹⁻¹ = 3·2⁰ = 3·1 = 3 - Wrong

D. 2·3ⁿ⁻¹ = 2·3¹⁻¹ = 2·3⁰ = 2·1 = 2 - Correct.

Please help! Click on image. Hurry quick!

Answers

Answer:

the answers are

a) Area of triangle is 15 square inches

Perimeter of triangle is 18.5 inches.

b) Area of trapezium is 210 square cm.

Perimeter of trapezium is 61.5 cm.

c) Area of parallelogram is 21 square yards

perimeter of parallelogram is 22 yards

Step-by-step explanation:

Area of triangle is 1/2( base × height)

Area of trapezium is 1/2(p1 + p2)×height

Area of parallelogram is base × height

In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management of Rock City recently undertook an extensive promotional campaign. They are interested in determining whether the promotional campaign actually increased the proportion of tourists visiting Rock City. The correct set of hypotheses is:________.A) H0: P > 0.75 Ha: P 0)75B) H0: P < 0.75 Ha: P 0)75C) H0: P 0)75 Ha: P < 0.75D) H0: P 0)75 Ha: P > 0.75

Answers

Answer:

a

Step-by-step explanation:

Solve the inequality z−18≥−23 and write the solution in interval notation, using improper fractions if necessary

Answers

Answer: [-5,∞)

Step-by-step explanation:

z-18 ≥ -23     Add 18  to both sides

 +18   +18

z ≥ -5    

Which means x has to be greater than negative 5.

In interval notation it will be [-5,∞)

Answer:

z ∈ [-5; +∞)

Step-by-step explanation:

z - 18 ≥ - 23

<=> z ≥ 18 - 23

<=> z ≥ -5

----> z ∈ [-5; +∞)

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