Answer:
Una matriz hermitiana, o también llamada matriz hermítica, es una matriz cuadrada con números complejos que tiene la característica de ser igual a su traspuesta conjugada.
A=A^*
Donde A^* es la matriz traspuesta conjugada de A.
Step-by-step explanation
Ejemplo de matriz hermitiana de orden 2×2
₍ 5............. 3+7i₎
₍3-7i .............2
₎
Ejemplo de matriz hermitiana de dimensión 3×3
(3............2-i......-5i)
(2+i............0.....9-5i)
(5i.........9+5i.....6)
Factor the trinomial 3x2 + 13x − 10 by grouping.
Answer:
(3x - 2) (x+5)
Step-by-step explanation:
3x^2 + 13 - 10
15× - 2 = -30
15+-2 = 13.....substitute 15x - 2x in place of 13x
3x^2+15x-2x-10
Factorise the first two values, thrn the second two
3x (x+5) - 2 (x+5)
Gathering the like terms together you eill be left with the following
(3x - 2) (x+5)
The factors of the trinomial 3x² + 13x - 10 is (3x-2)(x+5).
What is Factorization?The breaking or decomposition of an entity (such as a number, a matrix, or a polynomial) into a product of another entity, or factors, whose multiplication results in the original number, matrix, etc., is known as factorization or factoring in mathematics.
we have,
Trinomial= 3x² + 13x - 10
Now, factories using splitting the middle term we get
3x² + 13x - 10
= 3x² + 15x - 2x - 10
= 3x( x +5) - 2(x+ 5)
= (3x - 2) (x+ 5)
So, the factors are (3x- 2(x+5)
Learn more about Factorization here:
https://brainly.com/question/30525927
#SPJ5
12 = 7y + 12
Help me with this! I forgot how to do this and my teacher asked me! HELP!
Answer:
undefined
Step-by-step explanation:
12=7y+12
-12 -12
0=7y
/7 /7
undefined
you can't solve this as you can't divide 0 by a number
Answer:
Step-by-step explanation:
12 = 7y + 12
-12 -12
0 = 7y
/7 /7
0 = y
Which system of iniquities has no solution?
Answer:
its A i think\
Step-by-step explanation:
A swimmer is training for a upcoming meet he swims 10 laps the first day each day he increases the number of laps he swims by 5 which best describes the function
10+5=15
He swam 15 laps the second day
What number is 1/2 of 4
Answer:
1/2 of four is 2
Step-by-step explanation:
What’s the three rules of prime factoring 15 points
Answer:
15 = 1 x 15 or 3 x 5. Factors of 15: 1, 3, 5, 15. Prime factorization: 15 =
Step-by-step explanation:
Step-by-step explanation:
1. Find two prime numbers, that when added together, equal the number you started with. (Repeat this step until you have reached step 2.
2. Factor until you have prime numbers.
3. Prime numbers can only be divided by themselves or 1.
Good luck to you!
(this is 12 year old math)
Please help I don't understand.
9514 1404 393
Answer:
$465
Step-by-step explanation:
The problem statement tells you h represents the number of hours, and the number of hours is 7.
It also tells you f represents the number of fixtures, and the number of fixtures is 9.
And, the problem statement tells you the charge is 15h+40f, which is 15 times the number of hours plus 40 times the number of fixtures. Then the charges are ...
15·7 +40·9 = 105 +360 = 465
Ben Frank charges $465 for the work.
Answer:
if it wants an equation, 105h+360f but if its all together then its 465$
Step-by-step explanation:
15x7=105h
40x9=360f
A new pain reliever is advertised as being 97%
effective. To 3 decimal places, what is the
probability that the pain reliever will be effective
in 12 independent trials?
A. 0.116
B. 0.694
C. 0.970
D. 0.847
Answer:
B. 0.694
Step-by-step explanation:
Probability is the ratio of the number of possible outcome to the number of total outcome.
Given that the pain reliever is advertised as being 97% effective, for it to be effective in 12 independent trials
= (97%) ^ 12
= 0.693842361
The is approximately 0.694 to 3 decimal places
Answer:
B. 0.694
Step-by-step explanation:
Hope this helps
-5+x-7 what does x equal
Answer:
Since there is no equal sign x can not have an actual value, the equation simplified would be
x-12
Step-by-step explanation:
The way to solve this is to combine like terms
-5 + ( -7 ) = -12
If you have any questions feel free to ask - Mark
Please help I need help!!
Answer:
g x/ x=32
Step-by-step explanation:
Helloooooooooooooo
what is the distance between (0,0) and (8, 15) on the coordinate plane?
Answer:
23 steps away, add whatever numbers you have, aka start at 0 and go over 8 and then up 15 8+15
Step-by-step explanation:
HELP IMMA DIE
find the inverse for each relation {(-5,1),(-5,-1)(-5,8)}
a. (8,-5) (1,-5) (-5.8)
b. (-5,1) (-5,-1) (-5,8)
c. (-1,5), (1.-5) (8,5)
d. (1,-5) (-1,-5), (8,-5)
Answer:
(5,-1) (5,1) (5,-8)
Step-by-step explanation:
find the missing side of the triangle
Answer:
x= 8 km
Step-by-step explanation:
measurement used:
When getting measurement the missing side occupies 1 more than a half of 15km
Answer:
x = 8km
Step-by-step explanation:
Use Pythagorean Theorem:
c2 = a2 + b2
In the diagram given, the hypotenuse (c) is 17 so substitute these values into the equation
17^2 = x^2 + 15^2
Take 15 to the power 2, to the other side.
17^2 - 15^2 = x^2
Solve to get
64 = x2
Square root both sides so
x = 8
Five less than the product of 6 and a number equals 7
Answer:12
Step-by-step explanation:you start at the beginning like 6 times 1 is 6 but 6 times two is 12 minus 5 equals 7
The statement - "Five less than the product of 6 and a number equals 7" can be modelled as (6x - 5 = 7).
What is expression?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is the statement -
"Five less than the product of 6 and a number equals 7"
We can model this statement as an expression as follows. Let the number be {x}. Then, we can write that -
6x - 5 = 7
Therefore, the statement - "Five less than the product of 6 and a number equals 7" can be modelled as (6x - 5 = 7).
To solve more questions on expressions, visit the link below -
brainly.com/question/1041084
#SPJ5
Help please, I don’t understand I tried everything.
Answer:
x=79
y=22.
............
Jada completed her homework in 40 minutes. It took Andre 175% of Jada's time to complete the same homework. a) Who took longer to complete their homework? b) How long did it take Andre to complete his homework? Show your thinking on the tape diagram or another model.
add explanation too please
Answer: I think it took Andre 70 minutes
Step-by-step explanation:
Answer:
A.) Andre B.) 70 min
Step-by-step explanation:
A.) the key words are that it took andre 175% of Jada's time
B.)just take Jadars time 40 and multiply it by 175% or 1.75 as for the digram show Jadars as 100% and Andres as an extra 175% sorry i cant realy draw one right now
1. please help asap i will give u brainliest
Answer:
[tex] \frac{3}{4} [/tex]
Step-by-step explanation:
The is 3/4 because when u
[tex] \frac{12}{12} \div \frac{4}{4} = \frac{3}{4} [/tex]
Una persona hace un trabajo en 6 horas, una segunda hace el trabajo en 8 horas y una tercera hace el trabajo en 10 horas. Si las tres personas trabajan al mismo tiempo ¿Cuánto tiempo durarán haciendo el trabajo?
a) 1 16/47 horas.
b) 2 26/47 horas.
c) 3 1/47 horas.
d) 4 36/47 horas.
Answer:
b) [tex]2\dfrac{26}{47}\ \text{horas}[/tex]
Step-by-step explanation:
Tiempo necesario para completar el trabajo en primera persona = 6 horas
Trabajo hecho en 1 hora = [tex]\dfrac{1}{6}[/tex]
Tiempo necesario para completar el trabajo por segunda persona = 8 horas
Trabajo hecho en 1 hora = [tex]\dfrac{1}{8}[/tex]
Tiempo necesario para completar el trabajo por tercera persona = 10 horas
Trabajo hecho en 1 hora = [tex]\dfrac{1}{10}[/tex]
El tiempo necesario para completar el trabajo juntos viene dado por
[tex]\dfrac{1}{\dfrac{1}{6}+\dfrac{1}{8}+\dfrac{1}{10}}=\dfrac{1}{\dfrac{47}{120}}\\ =\dfrac{120}{47}=2\dfrac{26}{47}\ \text{horas}[/tex]
El tiempo necesario para completar el trabajo juntos es [tex]2\dfrac{26}{47}\ \text{horas}[/tex].
The end of a minute hand on a clock is 5.5 inches from the center. How far will the minute hand travel over three days
Answer:
Step-by-step explanation:
Given :
Radius, r = Length of hour hand = 5.5 inches
A complete cycle is traveled in 24 hours ;
C = 2πr
C = 2 * π * 5.5 = 34.557519 inches
In 3 days : It will travel 3 full cycles
3 * C = 3 * 34.557519 inches
= 103.672557 inches
show all your work?
and lease help me out ASAP
Answer: 20
Step-by-step explanation:
3y + 2 = 62
3y = 60
y = 20
How many solutions exist for the given equation?
1/2(x + 12) = 4x-1
zero
one
two
infinitely many
Answer:
one
Step-by-step explanation:
Given
[tex]\frac{1}{2}[/tex] (x + 12) = 4x - 1 ( multiply through by 2 to clear the fraction )
x + 12 = 8x - 2 ( subtract x from both sides )
12 = 7x - 2 ( add 2 to both sides )
14 = 7x ( divide both sides by 7 )
2 = x
There is one solution to the equation, that is x = 2
On Monday, Wendy had some leaves in a collection she was making for biology class. After she collected 23 leaves on Tuesday, she had 41 leaves. Find the number of leaves Wendy had on Monday.
Answer:
18
Step-by-step explanation:
41-23=18
..
..
..
..
..
..
The next model of a sports car will cost 14.4% less than the current model. The current model costs $53,000. How much
will the price decrease in dollars? What will be the price of the next model?
Decreased in price=. ?
Price of the next model=. ?
Answer:
its 28,000
Step-by-step explanation:
Answer:
$7,632, $45,368
Step-by-step explanation:
Decrease in price: 53,000(0.144) = $7,632
New price: $53,000 - $7,632 = $45,368
(2.8×10⁸)⁴×(1.6×10⁶)÷2.1×10¹⁵,what's the answer in scientific notation correct to 3 significant figures?
Answer:
it should be 9375 if to do all opf this work
Step-by-step explanation:
Can anyone help me out and summarize this, please: That’s his problem. It’s not your problem. There isn’t a tactful way to deal with somebody who has temper fits and throws a little fit about everything that’s about them. He doesn’t get to decide how you run your family. “I’m sorry. I can’t come. I don’t have the money, and we don’t borrow money. You’ve got to have a little more communication about things than that. Sorry.”
Furious is furious, and such it is. I can’t control other people’s temper fits. I can’t fix that for them. They have to deal with their own self on that. You can’t do it otherwise. It’s that simple.
(I need this for a class soon and if anyone could help it would be appreciated )
Answer:
I think the summary is about the guy saving money or trying to find a job for money? orrrrr, its about what you can and cant control, like people's emotions and choices, sorry if this isn't right!!!!
Step-by-step explanation:
Answer:
Managing kids can be a challenge. Some days keeping the peace while keeping your cool seems impossible. But whether you're reacting to an occasional temper flare-up or a pattern of outbursts, managing your own anger when things get heated will make it easier to teach kids to do the same.
To help tame a temper, try to be your child's ally — you're both rooting for your child to triumph over the temper that keeps leading to trouble.
While your own patience may be frayed by angry outbursts, opposition, defiance, arguing, and talking back, it's during these episodes that you need your patience most. Of course you feel angry, but what counts is how you handle that.
Reacting to kids' meltdowns with yelling and outbursts of your own will only teach them to do the same (and actually is associated with an increase in children's negative behaviors). But keeping your cool and calmly working through a frustrating situation lets you show — and teach — appropriate ways to handle anger and frustration.
Let's say you hear your kids fighting over a toy in the other room. You have ignored it, hoping that they would work it out themselves. But the arguing turns into screaming and soon you hear doors slamming, the thump of hitting, and crying. You decide to get involved before someone gets really hurt.
By the time you arrive at the scene of the fight, you may be at the end of your own rope. After all, the sound of screaming is upsetting, and you may be frustrated that your kids aren't sharing or trying to get along. (And you know that this toy they're fighting over is going to be lost, broken, or ignored before long anyway!)
So what's the best way for you to react? With your own self-control intact. Teaching by example is your most powerful tool. Speak calmly, clearly, and firmly — not with anger, blame, harsh criticisms, threats, or putdowns.
Of course, that's easier said than done. But remember that you're trying to teach your kids how to handle anger. If you yell or threaten, you'll model and ingrain the exact kinds of behavior you want to discourage. Your kids will see that you're so angry and unable to control your own temper that you can't help but scream — and that won't help them learn not to scream.
Step-by-step explanation:
Krutika rolls a fair dice 18 times.
How many times would Krutika expect to roll a four?
Answer:
every 6 rolls
Step-by-step explanation:
-2x+7y=14 identify the x-intercept and y-intercept
Answer:
x=7/2y − 7
Step-by-step explanation:
Let's solve for x.
−2x+7y=14
Step 1: Add -7y to both sides.
−2x+7y+−7y=14+−7y
−2x=−7y+14
Step 2: Divide both sides by -2.
−2x/−2 = −7y+14/−2
x=7/2y − 7
i dont get this please help!
PLEASE HELP MEEEEEEEE
Answer:
The moon equals 7
and the stars equal 4
Step-by-step explanation:
Equation 1:
(substitute the symbols for the numbers)
7 + 1 = 4 + 4 (<< This is correct, both sides equal 8)
Equation 2:
(again, substitute the symbols)
7 = 3 + 4
That is correct.
Hope this helped! Please give Brainiest!
(Asher)
PLZ Answer I will mark brainiest
Find the value of x in the figure shown
A. 20
B. 22
C. 45
D. 80