Mathematics High School

Help pls!!
You can check more than one box but number them so Ik please and ty !

Answers

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:1:2

2:3

3;1

4;3

5;2

6:1

7:3

8;1

Step-by-step explanation:Like if correct

Related Questions

solve the matrix and prove that it is equal 0

Answers

Step-by-step explanation:

[tex] \underline{ \underline{ \text{Given}}} : [/tex]

[tex] \tt{ {A}^{T} = \begin{bmatrix} 2 & - 4 \\ 4 & 3 \\ \end{bmatrix}}[/tex]

[tex] \underline{ \underline { \text{To \: Find}}} : [/tex]

[tex] \sf{ {A}^{2} - 5A+ 22I= 0}[/tex]

[tex] \underline{ \underline{ \text{Solution}}} : [/tex]

The new matrix obtained from a given matrix by interchanging it's rows and columns is called the transposition of matrix. It is denoted by [tex] \sf{ {A}^{T}} [/tex]. Again , Interchange it's rows and columns in order to find ' A '.

[tex] \tt{A = \begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix}}[/tex]

Now , LEFT HAND SIDE ( L.H.S )

[tex] \tt{ {A}^{2} - 5A+ 22I}[/tex]

Here, I refers to identity matrix. A diagonal matrix in which all the elements of leading diagonal are 1 ( unit ) is called unit or identity matrix.

⟼ [tex]\begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix} \times \begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix} - 5 \times \begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix} + 22 \times \begin{bmatrix} 1 & 0 \\ 0 & 1\\ \end{bmatrix}[/tex]

⟼ [tex]\begin{bmatrix} 2 \times 2 + 4 \times ( - 4)& 2 \times 4 + 4 \times 3 \\ - 4 \times 2 + 3 \times ( - 4) & - 4 \times 4 + 3 \times 3 \\ \end{bmatrix} - \begin{bmatrix} 10 & 20 \\ - 20& 15 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}[/tex]

⟼ [tex]\begin{bmatrix} 4 + ( - 16) & 8 + 12 \\ - 8 + ( - 12) & - 16 + 9 \\ \end{bmatrix} - \begin{bmatrix} 10 & 20 \\ - 20 & 15 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}[/tex]

⟼ [tex] \begin{bmatrix} - 12 & 20\\ - 20& - 7 \\ \end{bmatrix} - \begin{bmatrix} 10 & 20 \\ - 20 & 15 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}[/tex]

⟼ [tex]\begin{bmatrix} - 22 & 0 \\ 0& - 22 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}[/tex]

⟼ [tex]\begin{bmatrix} - 22 + 22 & 0 + 0 \\ 0 + 0 & - 22 + 22 \\ \end{bmatrix}[/tex]

⟼ [tex]\begin{bmatrix} 0 & 0\\ 0 & 0 \\ \end{bmatrix}[/tex]

⟼ [tex] \sf{0}[/tex]

RIGHT HAND SIDE ( R.H.S ) : 0

L.H.S = R.H.S [ Hence , proved ! ]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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Answer:

Step-by-step explanation:

\underline{ \underline{ \text{Given}}} :

\begin{gathered} \tt{ {A}^{T} = \begin{bmatrix} 2 & - 4 \\ 4 & 3 \\ \end{bmatrix}}\end{gathered}

\underline{ \underline { \text{To \: Find}}} :

\underline{ \underline{ \text{Solution}}} :

The new matrix obtained from a given matrix by interchanging it's rows and columns is called the transposition of matrix. It is denoted by \sf{ {A}^{T}}

. Again , Interchange it's rows and columns in order to find ' A '.

\begin{gathered} \tt{A = \begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix}}\end{gathered}

Now , LEFT HAND SIDE ( L.H.S )

\tt{ {A}^{2} - 5A+ 22I}

Here, I refers to identity matrix. A diagonal matrix in which all the elements of leading diagonal are 1 ( unit ) is called unit or identity matrix.

⟼ \begin{gathered}\begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix} \times \begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix} - 5 \times \begin{bmatrix} 2 & 4 \\ - 4 & 3 \\ \end{bmatrix} + 22 \times \begin{bmatrix} 1 & 0 \\ 0 & 1\\ \end{bmatrix}\end{gathered}

⟼ \begin{gathered}\begin{bmatrix} 2 \times 2 + 4 \times ( - 4)& 2 \times 4 + 4 \times 3 \\ - 4 \times 2 + 3 \times ( - 4) & - 4 \times 4 + 3 \times 3 \\ \end{bmatrix} - \begin{bmatrix} 10 & 20 \\ - 20& 15 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}\end{gathered}

⟼ \begin{gathered}\begin{bmatrix} 4 + ( - 16) & 8 + 12 \\ - 8 + ( - 12) & - 16 + 9 \\ \end{bmatrix} - \begin{bmatrix} 10 & 20 \\ - 20 & 15 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}\end{gathered}

⟼ \begin{gathered} \begin{bmatrix} - 12 & 20\\ - 20& - 7 \\ \end{bmatrix} - \begin{bmatrix} 10 & 20 \\ - 20 & 15 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}\end{gathered}

⟼ \begin{gathered}\begin{bmatrix} - 22 & 0 \\ 0& - 22 \\ \end{bmatrix} + \begin{bmatrix} 22 & 0 \\ 0 & 22 \\ \end{bmatrix}\end{gathered}

⟼ \begin{gathered}\begin{bmatrix} - 22 + 22 & 0 + 0 \\ 0 + 0 & - 22 + 22 \\ \end{bmatrix}\end{gathered}

⟼ \begin{gathered}\begin{bmatrix} 0 & 0\\ 0 & 0 \\ \end{bmatrix}\end{gathered}

⟼ \sf{0}0

RIGHT HAND SIDE ( R.H.S ) : 0

A large company states in its promotional literature that 74% of its employees have college degrees. Assume this claim is true. If 3 employees are selected at random from this company, what is the probability that at least 1 of the selected employees will not have a college degree?

A. 0.0176
B. 0.4052
C. 0.5948
D. 0.9284

Answers

Answer:it is 0.5948

Step-by-step explanation:c

The probability that at least 1 of the selected employees will not have a college degree is 0.594776.

What is Binomial distribution?

A common discrete distribution is used in statistics, as opposed to a continuous distribution is called a Binomial distribution. It is given by the formula,

[tex]P(x) = ^nC_x p^xq^{(n-x)}[/tex]

Where,

x is the number of successes needed,n is the number of trials or sample size,p is the probability of a single success, andq is the probability of a single failure.

Given that 74% of the employees have degrees, therefore, 26% of the employees have no degree.

Now, since we want at least any one of the three people selected to have a degree. Therefore, the probability of everyone having a degree can be written as,

Probability that at least any one of the three people selected to have a degree = 1 - Probability of everyone having a degree

Now, using the binomial distribution we can write,

[tex]\text{Probability} = 1 - [^3C_0\cdot(0.26)^0 \cdot (0.74)^{(3-0)}]\\\\\text{Probability} = 1 - 0.405224 = 0.594776[/tex]

Hence, the probability that at least 1 of the selected employees will not have a college degree is 0.594776.

Learn more about Binomial Distribution:

https://brainly.com/question/14565246

#SPJ2

30 = x + 22

What does x equal to?

Answers

Answer:

x = 8

Step-by-step explanation:

30 = x + 22

subtract 22 from both sides

8 = x

-16(x - 6) -4
B. x > 8
C. x < -4
D. x < 8

s t u p i d study island :') uωu`

Answers

Answer:

i think it is c but i am probably super wrong

Step-by-step explanation:

find the y and x intercept for
4x-y=12

Answers

Answer:

x intercept: (3,0)

y intercept: (0, -12)

I need help, I need to find the value of j, thank you

Answers

Step-by-step explanation:

[tex] \sin(x) = \frac{8}{10} \\ x = 53.13[/tex]

[tex] \sin(53.13) = \frac{4}{j} \\ j = \frac{4}{ \sin(53.13) } = \frac{4}{0.8} = 5[/tex]

for each sequence find the first 4 terms and the tenth term
a) n squared +3
b) 2n squared

Answers

Answer:

Step-by-step explanation:

Given that:

a) n³

The first 4 terms are;

let assume n = 1

1³ = 1

if n = 2

2³ = 8

if n= 3

3³ = 27

if n = 4

4³ = 64

So, the sequence is 1, 8, 27, 64

The tenth term of this sequence is: 10³ = 1000

2n²

if the first term is 1

then 2(1)² = 2

if n = 2

2(2)² = 8

if n = 3

2(3)² = 18

if n = 4

2(4)² = 32

So, the sequence is 1, 8, 18, 32

The tenth term will be 2(10)² = 200

A side of a square is
8 3/2
inches. Using the area formula A = s^2, determine the area of the square.

Answers

Answer:

12 inches

Step-by-step explanation:

once again... drop the answer or ill drop ur ip :)

Answers

Answer:

-11x = -48 +15

x = (-48+15) / (-11)

Answer: Please see explanation column for answer.

x= -36

Step-by-step explanation:

Step 1

from the attachment, Mai's solving is given as

1/3 (1/2x- 9) = 1/2 (x+18)

1/6x-3= 1/2x+9

1/4x-3=9

1/4x=12

x=48

Mai's error started when he subtracted wrongly 1/2 x from 1/6x which gave him 1/4 x instead of - 1/3 x.

Solving correctly, we have that

1/3(1/2x-9) = 1/2(x+18)

1/6x -3= 1/2x+ 9

taking like terms to like terms

1/6x-1/2x= 9+3

(1-3)/6x= 12

-2/6x= 12

-1/3x= 12

multiplying both sides by -3

-1/3x X -3 = 12 X -3

x= -36

Maryanne is making roast chicken for dinner. It takes 2 1/2 hours to cook. She plans to eat dinner at 6:00pm. At what time should she put the chicken in the oven?

Answers

Answer:

3:30

Step-by-step explanation:

Translate the given phrase into an algebraic expression.
Three is subtracted from
g

Answers

Answer:

g - 3

Step-by-step explanation:

g- 3

Hope that helps!

Cody increased the amount of money he saves each week from $40 to $75. By what percentage did Cody increase the amount of money he saves?

Answers

Step-by-step explanation:

75-40= 35

[tex] \frac{35}{40} \times 100\% = 87.5\%[/tex]

Solve the following system of equations for x using elimination

4x + y = 2
x - y = 3

A. -2
B. 1
C. 3.
D.4

Answers

Answer:

Step-by-step explanation:

Answer:

b 1 ksoeoeskmx

Step-by-step explanation:

ksowoxk374

if you have three apples and john takes 1 how many do you have

Answers

Step-by-step explanation:

hope it helps and have a great day :)

double 2, then divide b by the result

Answers

Answer:

can you give me the rest of the problem so i can solve

Step-by-step explanation:

WILL MARK YOU BRAINLIEST

Answers

Answer:

the second : the angles are congruent and the side lengths are proportional

I think it’s answer D

At Jonathan's school, there are 30 seventh graders participating in the school play. Of the students in the seventh grade, 60% are not participating in the school play. How many seventh graders at Jonathan's school are not participating in the school play?

Answers

Answer:

Step-by-step explanation:

If 30 students represent 40% of the class, we can divide 30 by .40 to get 75.

Tatiana deposits $600 into a bank account that pays 4.75% interest compounded annually. The expression(1 + 0.0475)t represents the number of dollars in the account after t years for every dollar in the original balance. Which of the following is a reasonable interpretation of the expression 600(1 + 0.0475)t in this context?

A: The amount of interest the account earns after 1 year

B:The amount of interest the account earns after 600 years

C:The amount of money in the account after 1 year

D:The amount of money in the account after t years

Answers

Answer:

Step-by-step explanation:

Answer:

the answer is d just trust me im doing this test right now

Step-by-step explanation:

3x + 2y = 26
y = 5x
Slove the system

Answers

X = 2
Y = 10

3x + 2y = 26
Y = 5x
3x + 2(5x) = 26
3x + 10x = 26
13x = 26
X = 2

Y = 5 (2)
Y = 10

Answer = 2

Step-by-step explanation:

3x + 2(5x) = 26

3x + 10x = 26

13x = 26

26 ÷ 13 = 2

Other Questions

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During the Cold War, each country tried to limit the other country's influence around the world by building nuclear weapons, supplying weapons and money to other countries to gain their support, and spreading false information about the other. While the two countries never came into direct, open conflict with each other, they did come into indirect conflict numerous times. This included the Cuban Missile Crisis, when the world seemed on the edge of a nuclear war.A historian has made the claim that too much is being made of the Cold War and that it was never a significant threat to world peace, as proven by the fact that the United States and the Soviet Union never went to war.Read these excerpts from speeches given by Nikita Khrushchev, Fidel Castro, and John F. Kennedy during the Cold War. Use the information from the three passages to write a historical essay that responds to the historian's claim. Be sure to include an introduction paragraph with a thesis, body paragraphs with at least three pieces of evidence supporting your thesis, a counterclaim to your thesis, and a refutation of that counterclaim. Finally, include a conclusion paragraph restating your thesis and the evidence supporting it.Passage 1: Soviet premier Nikita Khrushchev addressed the UN Assembly in 1960 after U.S. military aircraft allegedly entered Soviet airspace.We saw a dangerous manifestation of the work of these forces last spring when the aircraft of one of the largest States Members of the United Nations, the United States of America, treacherously invaded the air space of the Soviet Union and that of other States. What is more, the United States has elevated such violations of international law into a principle of deliberate State policy. 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They are the ones who are bringing the world to the brink of war through their warlike spirit, their own contradictions, and their economic problems which cause them to provoke a series of crises in order to maintain their war economy. Their factories run only when they are building war material. Their regime is marching toward a crisis. It is not like our economy, which is perfectly planned.4Passage 3: U.S. president John F. 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Help pls!! You can check more than one box but number them so Ik please and ty !

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Help pls!!
You can check more than one box but number them so Ik please and ty !