Which quadratic equation has roots-8 + 3i and -8 - 3i?
A x^2 - 16x + 73 = 0
B x^2 - 16x + 79 = 0
C x^2 + 16x + 79 = 0
D x^2 + 16x + 73 = 0

Answers

Answer 1

The two roots are

[tex]\alpha = -8+3i,~~~ \beta = -8-3i\\\\\\x^2 - (\alpha + \beta)x + \alpha \beta = 0\\\\\implies x^2 - (-8+3i-8-3i)x + (-8+3i)(-8-3i)=0\\\\\implies x^2 +16x + (-8)^2+3^2 =0\\\\\implies x^2 +16x +64+9=0\\\\\implies x^2 +16x +73[/tex]

Hence the answer is D.


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Here is ur perfect answer

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second one

Step-by-step explanation:

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Answer:

D. is your answer

Mrs Granger is writing problems for a test about subtracting fractions.Help her write two different subtraction problems that use only odd numbers for numerators and each have a difference of 3/4

Answers

1.

The first subtraction problem that will use only odd numbers as numerators and have a difference of 3/4 is 1 - ¹/₄

The first subtraction problem that will use only odd numbers as numerators and have a difference of 3/4 is

1 - ¹/₄ = ¹/₁ - ¹/₄

taking the L.C.M which is 4, we have

= (4 - 1)/4

= 3/4

So, the first subtraction problem is 1 - ¹/₄

2.

The second subtraction problem that will use only odd numbers as numerators and have a difference of 3/4 is 2¹/₂ - 1³/₄

The second subtraction problem that will use only odd numbers as numerators and have a difference of 3/4 is

2¹/₂ - 1³/₄ = ⁵/₂ - ⁷/₄

taking the L.C.M which is 4, we have

= (10 - 7)/4

= 3/4

So, the second subtraction problem is 2¹/₂ - 1³/₄

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please assist me

NO LINKS!!

Answers

Answer:

See below:

Step-by-step explanation:

Hello! My name is Galaxy and I will be helping you today, I hope you are having a nice day!

We can solve this in two steps, Comprehension and Solving. I'll go ahead and start with Comprehension.

If you have any questions feel free to ask away!!

Comprehension

We know according to the laws of geometry that all angles in a triangle add up to 180 degrees.

We also know that in an isosceles angle, the base angles are equation to each other.

Now that we know what we need to know, we can setup an equation.

[tex]2x-6+(2x)=180[/tex]

We can do this because first of all, we know that 2x-6 is one of the angles and as per the base angles of an isosceles triangle we know that both base angles are x, therefore we can add 2x to get 180 degrees.

I'll start solving now.

Solving

We can solve this by using the equation we made above and solving it with algebra.

[tex]2x-6+2x=180\\4x-6=180\\4x=186\\x=46.5[/tex]

We know that x is equal to 46.5 degrees. We can check that by inputting it into the equation.

[tex]2(46.5)-6+2(46.5)=180?\\4(46.5)=186?\\46.5=46.5[/tex]

We've proven that our answer is correct by double checking,

Therefore the answer is 46.5!

Cheers!

How much money must be deposited at the end of each year if the objective is to accumulate $250,000 after 10 years? Assume interestis eamed at the rate of 10 percent compounded annually. How much interest will be eamed?​

Answers

Answer:

Step-by-step explanation:

sasđdádd

y>= -5x + 8 what is m?​

Answers

Answer:

The slope = -5

Step-by-step explanation:

y ≥ -5x + 8

Look at the problem as y = -5x + 8 and compare to the slope intercept form. The slope = -5

Which are shown on the diagram? Check all that apply.

Answers

LJK and mj and jk is the correct answer

Answer:

B C. F

Step-by-step explanation:

The diameter of a circle is 6.8 m. Find the circumference to the nearest tenth

Answers

Answer:

21.4m

Step-by-step explanation:

Circumference : x diameter

is approximately 3.142

3.142 x 6.8 = 21.3656

Nearest tenth = 21.4m

Please help with math

Answers

Answer:

3.84m

Step-by-step explanation:

32*12=384

384/100=3.84

Answer:

384. hope this helps you out

Explain: 32•12=384, but for got to divide it so it equal 3.84

please help as fast as you can

Answers

Answer:

x= 32 i think

CD= 51

Step-by-step explanation:

Answer:

9x-15=7x-1. => 2x=14 x=7

CD= 7×7-1=48

help me pls I'm so confused

Answers

Answer:

I feel like it's A

Step-by-step explanation:

The dot looks closer

Answer and Step-by-step explanation:

The first graph (option) is the correct answer.

The line create in this graph is called the "Line of Best Fit", in which the line has to be somewhere in the middle of all the points on the scatter plot graph. The line shows the relation of the points to each other.

The line is in more proportion to the points than with the other graph.

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I hope this helps!

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Answers

Answer:

1. 3

2. 0, 620

3. Positive

4. 2006

5. 2637

2/3 times what equals 3/2

Answers

[tex]\dfrac 23 \cdot x = \dfrac 32 \\\\\implies 2x = \dfrac 92\\\\\implies x =\dfrac 94[/tex]

pleasee help meeeeeee

Answers

Step-by-step explanation:

we mulyiply 3*1 =x-7

3=x-7

-x= -7-3

-x= -11 so when we divide -11 by -x it becomes 11

Plz help me on this qustin. Slove for w 2w ≥ -12

Answers

Answer:

w > -6

Step-by-step explanation:

divide each term n 2x > -12 by 2 then simplify

the price of 10 chairs is equal to that of 4 tables. the price of 15 chairs and two tables together is 4000$ the total price ( in $) of a chair and table is?​

Answers

Answer:

  $700 for a chair and a table

Step-by-step explanation:

Let t and c represent the price of a table and a chair, respectively. The given relations are ...

  10c = 4t

  15c +2t = $4000

Divide the first equation by 2 and substitute for 2t:

  5c = 2t

  15c +5c = $4000

  20c = $4000

  c = $200

  t = 5c/2 = 5($200)/2 = $500

The total price of a chair and a table is ...

  $200 +500 = $700 . . . . price of a chair and a table

please calculate these angles ​

Answers

Answer:

b=114°

.....................

c=43°

Answer:

A) 87 degrees

B) 114 degrees

C) 43 degrees

a
In a math class with 25 students, a test was given the same day
that an assignment was due. There were 15 students who passed
the test and 20 students who completed the assignment. There
were 13 students who passed the test and also completed the
assignment. What is the probability that a student passed the test
given that they did not complete the homework?
a

Answers

Using it's concept, it is found that there is a 0.4 = 40% probability that a student passed the test given that they did not complete the homework.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, of the 25 - 20 = 5 students that did not complete the homework, 15 - 13 = 2 passed the test, hence the probability is given by:

p = 2/5 = 0.4 = 40%.

0.4 = 40% probability that a student passed the test given that they did not complete the homework.

More can be learned about probabilities at https://brainly.com/question/14398287

#SPJ2

a. Does it take more cups or gallons to measure the amount of water in a large
a
pot? Explain.

Answers

Answer:

More cups

Step-by-step explanation:

Cups are a smaller measuring unit than gallons are. Therefore it would take more cups than gallons to fill a pot.

NEED ASAP

in a company, 65% of workers are men. if 1,995 people work for the company who aren’t men, how many worker are their in all.

Answers

Answer:

5700

Step-by-step explanation:

Assume that the total number of people working for the company is x. Since 65% of workers are men and 1,995 people working for the working are not men, then that means that 35% of the total number of people working for the company is equal 1,995.

Set up an equation: 0.35x = 1,995 and find x.

x = 5700

(−2 1/5) × (−5 3/4) as a fraction

Answers

Answer:

-23 over 10

Step-by-step explanation:

Hope this helped :)

Answer:

253/20

Step-by-step explanation:

(−2 1/5) × (−5 3/4) =

1. change both mixed numerals into fractions.

= -11/5 × (-23/4)

2. Since both numbers are negative, the product is positive. Multiply both numerators together. Multiply both denominators together.

= 253/20

253 is the product of 2 prime numbers, 11 and 23. 20 is the product of 2² and 5. There are no common factors in the numerator and denominator, so this fraction cannot be reduced.

Answer: 253/20

Proxima Centauri, our nearest star except for the sun, is about 4·1013 km from Earth. Find to one decimal place its distance in parsecs.

Answers

Step-by-step explanation:

The conversion for parsecs into meters is

1 parsec (pc) = [tex]3.09×10^{16}\:\text {m}[/tex]

So if Proxima Centauri is [tex]4×10^{13}\:\text{m}[/tex] away, then in terms of parsecs, this distance is

[tex]4×10^{13}\:\text{m}×\left(\dfrac{1\:\text{parsec}}{3.09×10^{16}\:\text{m}}\right)[/tex]

[tex]\;\;\;\;\;= 1.2×10^{-3}\:\text{parsec}[/tex]

brainy heart rate 190 per minute her heart rate is 70% of her MHR
what is target heart rate
70
120
133
190
217

Answers

Answer:

120

Step-by-step explanation:

trough dependent sarcasm

PLEASE ANSWER FAST BUT CORRECTLY

Answers

Shordy that’s too much work smfh

Answer:

A-quadratic

B [tex]- \infty\leq x\leq \infty[/tex]

C [tex]-1\leq x\leq \infty[/tex]

D -3.7071 and -2.2929

E 17

F (-3, -1)

G(17,0) (-2.2929  -3.7071)

h(17,0)  -3.7071,0)

j even

Latisha works x hours each day. Demetrius works 1 more hour each day than Latisha. Which expressions both calculate the number of hours Demetrius works in a 5-day work week? 5 x + 1 and 5 ( x + 1 ) 5 x plus 1 and 5 times open paren x plus 1 close paren ( x + 1 ) × 5 and 5 × x + 1 open paren x plus 1 close paren times 5 and 5 × x + 1 5 ( x + 1 ) and 5 x + 5 5 times open paren x plus 1 close paren and 5 x plus 5 ( x + 1 ) × 5 and 5 + ( x × 1 )

Answers

The number of hours worked by both Latisha and Demetrius is; 5x + 5(x+1)

According to the question:

We are required to generate an expression that can be used to calculate the number of hours used to work by Latisha and Demetrius.

Since Latisha works x hours per day; In 5 days she works 5x hours.

Demetrius works 1 more hour each day than Latisha; In 5 days; she must have worked; 5(x +1) hours.

The sum of both of them gives; 5x + 5(x +1).

Read more:

https://brainly.com/question/16989990

(8 points) will mark brainliest!! pls help:)

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The answer is -21/8 or -2 5/8

if you get it right ill mark brainliest​

Answers

Answer:

Step-by-step explanation:

? i cant see what the page is

Lauren received a box of 12 identical-looking truffles for Valentine's Day. 3/4 of them have a fruit filling and 2/3 of the remaining are coffe-flavored. 1/3 of the fruit-filled ones have raspberry filling and 1/6 of the remaining fruit-filled truffles have strawberry flavor. What is the probability that she will draw a flavor she doesn't reconize.
A. 1/3
B. 2/5
C. 1/2
D. 3/4

Answers

C. 1/2

9 of the truffles are fruit-filled. 2 are coffee-flavored. one is unaccounted for.

Of the 9 fruit-filled ones, 3 are raspberry and one is strawberry. 5 are unaccounted for.

Putting together the ones we don't know, we get 6 unknown ones. 6/12, or 1/2, is the answer.

The answer is c 1/2.

Simplify. 3x+4(x+3)+2


7x + 14

4x + 9

3x + 9

7x + 5

HELP ASAP

Answers

Answer:

7x + 14

Step-by-step explanation:

7x+14 is the correct awnser if you look at the question correctionly their notifying you:

simplify:

it so it would be the last subject 7x+14

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QUESTION YOU ASKED:

Simplify. 3x+4(x+3)+2

ANSWER CHOICE:

7x+14

4x+9

3x+9

7x+5

HELP ASAP

HERES MY ASAP ANSWER:

LAST ONE! D HOPE THIS HELPS!

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ANSWER: A

ANSWER IN WORD-FORM: x+

ANSWER SIMPLIFYED: 7x+14

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true or false : If a number Y has Z positive integer factors, then Y and 2Z are integer factors. If true explain how

Answers

Here's ur perfect answer

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