What is the conjugate? See image below! Please help asap
1) 4- sqrt(7)
2) 8+ sqrt (-5)

Sqrt is square root, use the answers listed to the right

What Is The Conjugate? See Image Below! Please Help Asap1) 4- Sqrt(7)2) 8+ Sqrt (-5)Sqrt Is Square Root,

Answers

Answer 1

9514 1404 393

Answer:

2 +3i8 -i√57 +2i4 +√7

Step-by-step explanation:

The conjugate is found by changing the sign of the square root term.‡ (For this purpose, i = √-1.)

a) the sign of 3i is changed: 2 + 3i

b) the sign of sqrt(-5) is changed: 8 -sqrt(-5) = 8 -i√5

c) the sign of 2i is changed: 7 +2i

d) the sign of sqrt(7) is changed: 4 +√7

_____

‡ Actually, the conjugate of a binomial is formed by changing the sign between terms. The purpose is to allow the product of the binomial and its conjugate to be the difference of squares.

Conventionally, the conjugate of a complex number is the value with the sign of the imaginary part reversed. That is why (-2i+7)* = 7+2i.


Related Questions

in southern California, there is a six-mile section of Interstate 5 that increases 2,500 feet in
elevation. What is the angle of elevation?

Answers

Answer:

4.51°

Step-by-step explanation:

1 mile= 5280 feet

6 mile= 6(5280) =31680 feet

Angle of elevation is 0 where

tan 0 = 2500/ 31680 = 0.0789

Hence 0 = tan-1(0.0789) = 4.51°

hope it helps!

explain why the terms 4x and 4x^2 are not like like terms​

Answers

Answer:

well for me it's because

Step-by-step explanation:

Of the raise to power

how to write an equation of a line passing through a point

Answers

Answer:

Find the Equation of a Line Given That You Know Two Points it Passes Through. The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.

Step-by-step explanation:

You are buying notebooks that cost a total of $10.00. There is an 8% sales tax. How much tax will you pay?

The sales tax is $??

Answers

Answer:

$.80 the new amount is $10.80

Brainliest Please!!!!?!!!!!!!!!!!

I am confused on this.​

Answers

Straight lines are 180 degrees and angle BCD is 110 degrees, and also AB and CB are the same which means 180-110=70 and 70 divided by 2 is 45 degrees so m angle A =45 degrees and m angle B= 90 degrees and ACB is 45 degrees

I really hope you can see it if you can’t please ask me what it says cause I really need help

Answers

Answer:

1.   20 cm^2

2.  40 cm^2

3.   14 cm^2

4    49 cm^2

Step-by-step explanation:

Area of triangle= 1/2(base)*(height)

Area of rectangle= (base)*(height)

1. 1/2(10)(4)=20

2. (8)(5)=40

3.1/2(4)(7)=14

4. (7)(7)=49

Find the equation of the parabola with its focus at (-7,6) and its directrix at y = 4
OA) y-/a(x + 7)2 + 5
O B) y-/Ax+ 7)2 + 5
Ooy-/ax- 72 +5
OD) y- 1/4lx+ 5)2+7

Answers

Answer:

Your choices of answers are confusing , but It looks like A is a good fit

Step-by-step explanation:

[tex]x^{2}[/tex] + 14x +54  ( from drawing )   [ leave the web address for the graphing webpage so you can use it to check answers]

complete the square on the above expression

[tex]x^{2}[/tex] +14x + [tex]7^{2}[/tex] + 54 - 49   ( b/c we added 49 to complete square)

(x+7)^2 + 5

So this looks a bit like answer A

Find a premium on Property worth 20 500000 Rupees at 3% if (1) the property is fully insured (2) the property is insured for 80% of its value

Answers

Answer:

1)Premium = 615,000 Rupees

2)Premium = 492,000 Rupees

Step-by-step explanation:

Property worth = 20,500,000 Rupees

Premium rate = 3%

1) the property is fully insured means the property is insured to 100% of its value.

Thus, the insured value = 20,500,000 Rupees

Thus,

the premium = 20,500,000 × 3%

Premium = 615,000 Rupees

2) the property is insured to 80% of its value.

Thus, the insured value = 20,500,000 × 80% Rupees = 16,400,000 Rupees

Thus,

the premium = 16,400,000 × 3%

Premium = 492,000 Rupees

What is the value of f in the equation f/4=8 please help

Answers

Answer:

f=32

Step-by-step explanation:

f /4 =8

( f/ 4 )*(4)=(8)*(4)

y=2x-7
y=-3x+18
solve by substitution

Answers

Answer:

-x+11

Step-by-step explanation:

am not sure if this is correct but

2x-3x=-x

-7+18=11

-x+11

Catherine split rope that was 49.4 inches into
4 equal parts. What is the length of each part?

Answers

Answer:12.4 inch

Step-by-step explanation:

49.4 is the total length of the rope. And you have to equally divide it into 4 parts.

So 49.4/4

=12.4 inch(rounded off to 3 s.f from 12.35)

A person standing on a moving walkway travels 90 feet in 30 seconds. What equation represents this relationship? How many feet will the person travel in 10 seconds?

Answers

Answer:

30 feet

Step-by-step explanation:

90/30*10=30

Answer:

The answer is 30 ft

Step-by-step explanation:

An account with the same Principal Amount growing at a rate of 5% will grow the
fastest if the account is *
Simple Interest
Compounded Quarterly
Compounded Monthly

Answers

Answer:

Compounded Quarterly

Step-by-step explanation:

This is because the compound interest equation is dependent on the number of times the amount is compounded per year. Monthly is 12 times per year and quarterly is only 4. Simple interest stays at a linear rate.

A bucket holds b liters of water. But a jar holds 8 fewer liters than the bucket. How many times can the bucket hold than the jar? Thanks for your help!

Answers

Answer:

b / (b - 8)

Step-by-step explanation:

Given that :

Litres of water held by bucket = b

Jar holds 8 litres fewer than bucket; hence, litres held by jar = b - 8

The number of times bucket can hold than jar is :

Litres held by bucket / litres held by jar

b / (b - 8)

SOMEONE ANSWERR PLEASE

Answers

Answer:

Addition

Step-by-step explanation:

By simple addition we can reduce the no. Of steps involved.

Answer:

Subtracting; x = 3/2, y = 8

Step-by-step explanation:

1. Subtracting them from one another because the 1/2y term matches up.

2. when added together:

8x = 12

x = 3/2

plug the x value into one of the equations:

y = 8

Again sorry for the rainbow but pls explain to me and the answer

Answers

Answer:

Its supposed to be 28.52 - 11.20 not 11.2

Step-by-step explanation:

Find x. Give you answer in the simplest form. X

Answers

Step-by-step explanation:

[tex]x = \frac{7}{ \sqrt{3} } = \frac{7 \sqrt{3} }{ \sqrt{3 } \times \sqrt{3} } = \frac{7 \sqrt{3} }{3} [/tex]

PLSS HELP ILL GIVE YOU BRAINLIEST!!

Answers

Answer:

Step-by-step explanation:

Q1)

Use Phythogoras theorem:

[tex](AC)^2=(BC)^2+(AB)^2\\BC^2=AC^2-AB^2\\BC^2=6^2-4^2\\BC^2=36-16\\BC^2=20\\\\Apply\ square\ on\ both\ sides\\\\\sqrt{BC^2}=\sqrt{20} \\BC=\sqrt{20} \\BC=\sqrt{10(2)} \\BC=\sqrt{5(2)(2)} \\BC=2\sqrt{5}[/tex]

Q2)

Apply phythogoras theorem:

[tex]CD^2=CE^2+DE^2\\CD^2=7^2+9^2\\CD^2=49+81\\CD^2=130\\\\Apply\ square\ root\ on\ both\ sides\\\\\\sqrt{CD^2} = \sqrt{130} \\\\CD=\sqrt{130} \\\\CD=11.4[/tex]

Q3)

Apply phythogoras theorem again:

[tex]BC^2=BD^2+CD^2\\BC^2=7^2+13^2\\BC^2=49+169\\BC^2=218\\\\Apply\ square\ root\ on\ both\ sides\\\\\\sqrt{BC^2} =\sqrt{218} \\\\BC=\sqrt{218} \\\\BC=14.76[/tex]

I have an attached an image for Question 2 for better understanding the length of DE in question equals 15 - 6 = 9

write a coordinate proof. Given: Rectangle ABCD has vertices A(0,4), B(6,4), C(6,0), D(0,0). E is the midpoint of line DC. F is the midpoint of line DA. Prove: The area of rectangle DEGF is one fourth the area of rectangle ABCD.

Please help I've been trying for a while ​

Answers

Answer:

The answer is below

Step-by-step explanation:

Distance between two points [tex]A(x_1,y_1)\ and\ B(x_2,y_2)\ on \ the\ coordinate\ plane[/tex]

[tex]|AB|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

The area of rectangle = length * breadth

The area of rectangle ABCD = |AB| * |BC|

[tex]|AB|=\sqrt{(6-0)^2+(4-4)^2}=6\\\\|BC|=\sqrt{(6-6)^2+(0-4)^2} =4[/tex]

The area of rectangle ABCD = |AB| * |BC| = 6 * 4 = 24

E(x, y) is midpoint of line DC. Its coordinate is:

x = (6 + 0) / 2 = 3; y = (0 + 0) / 2 =0

The coordinate of E = (3, 0)

F(a, b) is midpoint of line DA. Its coordinate is:

a = (0 + 0) / 2 = 0; b = (4 + 0) / 2 = 2

The coordinate of E = (0, 2)

The area of rectangle DEGF = |DE| * |DF|

[tex]|DE|=\sqrt{(3-0)^2+(0-0)^2}=3\\\\|DF|=\sqrt{(0-0)^2+(2-0)^2} =2[/tex]

The area of rectangle ABCD = |DE| * |DF| = 3 * 2 = 6

Therefore, area of rectangle DEGF is one fourth the area of rectangle ABCD

Solve for y ..............

Answers

Answer:

Im not gonna explain i will give you the answer that i came up with I currently have 60 right now hope this is right

Step-by-step explanation:

10 十w=-9
I’m very confused please help

Answers

Answer:

w = -19

Step-by-step explanation:

10 + w = -9

-10         -10

w = -9 - 10

w = -19

The answer is this one: w=-19

a. Two paths of width 2m each run across the middle of a rectangular
garden of length 60m and breadth 40m. What is the total area
covered by the both paths.
b. The area of a rectangular field is 60000 m². If the ratio of length
and breadth is 3:2, find its perimeter.

Answers

Answer:

196 m² ; 1000 m

Step-by-step explanation:

Given that:

Dimension of rectangular garden = 60m by 40m

Width of the 2 paths that run across each other = 2m

Hence,

Area of path 1 = (length * width) = (60 * 2) = 120m²

Area of path 2 = (breath * width) = (40 * 2) = 80m²

Area of Point where both paths cross each other (2 * 2) = 4m²

Total area covered by both path = (120m² + 80m² - 4m²) = 196m²

B.)

Area of rectangular field = 60000m²

Ratio of length and breadth = 3 : 2

Length * breadth = 60000

x ; breadth = (2/3)x

x * (2/3)x = 60000

2/3 x² = 60000

x² = 60000 ÷ 2/3

x² = 40,000

x = sqrt(40000)

x = 200

(3/2) * 200 = 300

Length = 300

Hence,

Perimeter = 2(length + breadth)

Perimeter = 2(300 + 200)

Perimeter = 2(500)

Perimeter = 1000m

I just wrote a formal email to my teacher. What do you think their response was?
A. (Something formal back)
B. K
C. (Emailing me something back that's basically complete gibberish)
D. Thanks
(This is a joke just take the points, you earned them.)​

Answers

Answer:

A

Step-by-step explanation:

Which image most closely shows the pattern of glitter flow in the lava
lamp?

Answers

Answer: D hope this helps

d-3
----- =11
4

What does D =?

Answers

47 ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️

Use the distributive property to remove the parentheses.

1. 3(8 + x)
2. 7(v - 2)
3. 3(v - 9)

Answers

Answer:

1. 24 + x

2. 7v - 14

3. 3v - 27

Step-by-step explanation:

Distributive property means that you go through something by either multiplying or dividing by whatever may be in the parentheses.

1. For one you would multiply the 3 through. 3 x 8 + 3x which can be simplified into 24 + 3x.

2. For two you would multiply the 7 through. 7v - 7 x 2, which can be simplified into 7v - 14.

3. For three you would multiply the 3 through. 3v - 3 x 9, which can be simplified into 3v - 27

Hope this helps!

Please tell me if I am incorrect I enjoy learning from my mistakes!

Good luck!

Solve the proportions 21 over 20 =m over 100

Answers

Step-by-step explanation:

21/20 = m/100

m = 100 * (21/20) = 105.

Answer:
m=105

Explanation:
Please see the attached image!

I hope this helps!

I Don't Understand This One Ether ._.

Answers

Answer:

B

Step-by-step explanation:

What is the equation of the line
that passes through the point
(-3,-5) and is parallel to the line
2x+3y=15

Answers

ANSWER: Y=2x+1. The formula of ur answer would be in y=mx+b. Since it is parallel to 2x+3y=15, the m would have to be the same. Therefore m =2. Next we find b. We would plug in the points (-3,-5) in the formula y=mx+b to find B knowing m= 2 so -5=2(-3)+b. B=1.

Answer:

y = (-2/3)*x -7

Step-by-step explanation:

2x+3y=15

3y = -2x + 15

y = (-2/3) *x + 5

slope for parallel line should be -2/3 too

pass (-3 , -5)      y = mx + b      b = y - mx = (-5) - ((-2/3) * (-3))

b = -5 - 2 = -7

parallel line: y = (-2/3)*x -7

a bird flies from the ground to the top of a tree, sits there and sings a song for a while, flies down to the top of a picnic table to eat crumbs, then flies back to the top of the tree to sing some more, What graph best represents this situation?

Answers

Picnic table to eat crumpbs left behind
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