help help help miiiiiiiiiiiio plzzzzzzzz​

Help Help Help Miiiiiiiiiiiio Plzzzzzzzz

Answers

Answer 1

Answer:

[tex]\begin{bmatrix}-1 & 2 \\ \frac{3}{2} & -\frac{5}{2} \end{bmatrix}[/tex]

Step-by-step explanation:

Inverse of a matrix is given by,

[tex]\begin{bmatrix}a & b\\ c & d\end{bmatrix}=\frac{1}{ad-bc}\begin{bmatrix}d & -b\\ -c & a\end{bmatrix}[/tex]

By using this property,

[tex]\begin{bmatrix}5 & 4\\ 3 & 2\end{bmatrix}^{-1}=\frac{1}{(5\times 2-4\times 3)}\begin{bmatrix}2 & -4\\ -3 & 5\end{bmatrix}[/tex]

              [tex]=-\frac{1}{2}\begin{bmatrix}2 & -4\\ -3 & 5\end{bmatrix}[/tex]

              [tex]=\begin{bmatrix}-1 & 2 \\ \frac{3}{2} & -\frac{5}{2} \end{bmatrix}[/tex]

Therefore, inverse of the given matrix will be [tex]\begin{bmatrix}-1 & 2 \\ \frac{3}{2} & -\frac{5}{2} \end{bmatrix}[/tex]


Related Questions

HELP
ASAP FOR 20 POINTS!

Answers

Answer:

15.01

Step-by-step explanation:

You deposit $3000 into a bank account that pays 1.25% annual interest, compounded semi-annually. What is the final balance after 4 years

Answers

Answer:

$3,153.32

Step-by-step explanation:

Given that

The deposited amount is $3,000

The annual interest rate is 1.25%

So, the semi-annual interest rate is 1.25% ÷2  = 0.625%

And, the time period = 4 × 2 = 8

We need to find out the final balance

So,

As we know that

Future value = Present value × (1 + rate of interest)^number of years

= $3,000 × (1 + 0.625%)^8

= $3,153.32

. A window is in the form of a rectangle surmounted by a semicir- cle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only half as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thick- ness of the frame.

Answers

The area of the window that lets in the most light will be the one that causes the window to transmit the most light overall.

To find the proportions of the window that will admit the lightest, we need to maximize the total area of the window while keeping the perimeter fixed. The total area of the window is the sum of the area of the rectangle and the area of the semicircle. The area of the rectangle is the product of its length and width, and the area of the semicircle is half the product of its radius and the area of a full circle with the same radius.

Since the perimeter is fixed, the length and width of the rectangle are also fixed. The radius of the semicircle can be found using the perimeter and the length and width of the rectangle.

Once we have the radius of the semicircle, we can find the area of the rectangle, the area of the semicircle, and the total area of the window. Since the semicircle is of tinted glass that transmits only half as much light per unit area as clear glass does, we will have to multiply the area of the semicircle by 0.5 to find the total amount of light transmitted by it.

Finally, we will have to compare the total amount of light transmitted by the window for different values of the length and width of the rectangle. The proportion of the window that admits the most light will be the one that results in the maximum total amount of light transmitted by the window.

To learn more about surface area, refer to the link:brainly.com/question/29298005

#SPJ4

need help with these three

Answers

19) Multiplication is the same as division just the other way around. When I say this I literally mean it like we could use 45 x 2 which equals 90. Now if we look at it from division we would have to divide the answer we got with the smaller number of the multiplication. That would be 2 in this case. So it would be 90 divided by 2 equals 45. Hope I helped!

Expanded and simplified form if 5 (m+2) + 9 (n+4)

Answers

Answer:

The answer expanded and simplified is

5m +9n +14

A sine function has an amplitude of 3, a period of π, and a phase shift of [tex]\frac{\pi }{4}\\[/tex]. What is the y-intercept of the function?


3

0

-3

[tex]\frac{\pi }{4}[/tex]

Answers

The y-intercept of the sine function is -3

We know that the standard form of the sine function is, y = a sin(bx + c) + d

where, amplitude = |a|

period = 2π/b

phase shift = -c/b

and vertical shift = d

Here, a sine function has an amplitude of 3, a period of π, and a phase shift of π/4

a = 3,

So, 2π/b = π

⇒ b = 2

And phase shift -c/b = π/4

⇒ -c/2 = π/4

⇒ -c = π/2

⇒ c = -π/2

So, a sine function would be,

y = 3 sin(2x + -π/2) + 0

y = 3 sin(2x + -π/2)

When x = 0,

y = 3 sin(0+ -π/2)

y = 3 sin(-π/2)

y = 3 × (-1)

y = -3

Learn more about the sine function here:

https://brainly.com/question/12015707

#SPJ4

A circle with radius 12 cm has a segment with a central angle of 60. What is the area of the segment?​

Answers

Answer:

Exact Area = 24pi square cm

Approximate Area = 75.36 square cm  (when using pi = 3.14)

Note: "square cm" can be abbreviated to "cm^2" without quotes.

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

Explanation:

Let's find the area of the full circle with radius r = 12

A = pi*r^2

A = pi*12^2

A = 144pi  

This is the exact area of the full circle in terms of pi. To get the approximate area, you would replace pi with something like 3.14 (though you could use more decimal digits in pi to get a more accurate area).

We found the area of the full circle, but we only want a pie slice of it. Each slice is 60 degrees, out of 360 total. So that means we want 60/360 = 1/6 of the full area.

In other words, there are 6 slices because 360/60 = 6, which means we'll divide the area we got by 6

(144pi)/6 = (144/6)pi = 24pi

The exact area of the pie slice is 24pi square cm

If you used the approximation pi = 3.14, then that leads to an approximate answer of 24*pi = 24*3.14 = 75.36 square cm

MULTIPLE CHOICE QUESTION
What does the "rise" represent?
The change in y axis
the change in x axis
Rewatch

Answers

The change in Y axis

What is the perimeter?
Help you plz....And no links!!
I repeat No links!!

Answers

Answer would be 120 because 15×8 is one 120 I think maybe it’s the same as area

If the radius of a new larger circle is 36 mm, what is the area of the larger circle with the same scale?

Answers

Answer:

4072.032mm^2

Step-by-step explanation:

Given data

Radius= 36mm

The expression for the area of a circle is

A= πr^2

Substititute

A= 3.142*36^2

A= 3.142*1296

A= 4072.032mm^2

Hence the area is 4072.032mm^2

6 3/4 + 3 1/8 whats the answer?

Answers

Answer:

9 7/8

Step-by-step explanation:

someone pls help this is an emergency

Answers

3,2,-2 you set the bottom of the fraction equal to 0 then solve

If BE=24, DF= 10, and A F= 13,
1. Find the perimeter of ΔABE
2. Find the perimeter of ΔCDF​

Answers

The perimeter of ΔABE is 70 units.

The  perimeter of ΔCDF​ is 35 units.

How to find the perimeter of a triangle?

A triangle is a polygon with threes sides. The sum of angles in a triangle is 180 degrees.

Therefore, the perimeter of a triangle is the sum of the whole sides.

Triangle mid point theorem is used to find the perimeter of the triangles.

It states that the line segment in a triangle joining the midpoint of two sides of the triangle is said to be parallel to its third side and is also half of the length of the third side.”

Let's find the perimeter of triangle ABE.

Hence,

perimeter of triangle ABE = AB + BE + AE

BE = 24

AE = 13 + 13 = 26

AB = 10 + 10 = 20

perimeter of triangle ABE = 24 + 26 + 20 = 70 units

perimeter of triangle CDF = DF + CD + CF

perimeter of triangle CDF = 10 + 13 + 12

perimeter of triangle CDF = 35 units

learn more triangle here: https://brainly.com/question/28325420

#SPJ1

Alex has some marbles.
Billie has three times as many marbles are Alex.
Chris has 9 fewer marbles than Billie.
In total they have 68 marbles.
How many marbles does Alex have?

Answers

Answer:

11 marbles

Step-by-step explanation:

Let x = no. of marbles-Alex

3x = no. of marbles-Billie

3x - 9 = no. of marbles-Chris

x + 3x + 3x - 9 = 68

7x - 9 = 68

7x = 77

x = 11

Alex will have 11 marbles out of a total of 68 marbles.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Alex has some marbles. Billie has three times as many marbles are Alex.

Chris has 9 fewer marbles than Billie.

In total, they have 68 marbles.

Let x = no. of marbles-Alex

3x = no. of marbles-Billie

3x - 9 = no. of marbles-Chris

The number of marbles will be calculated as,

x + 3x + 3x - 9 = 68

7x - 9 = 68

7x = 77

x = 11

To know more about an expression follow

https://brainly.com/question/22075931

#SPJ2

How do you solve this?

Answers

Answer: 140^3

Step-by-step explanation:

The 3 is an exponent. To solve this, you basiclly have to multiply the three numbers and add a 3 exponent.

Find the volume of the following figure.

(I need a answer to this very soon so if anybody can answer id really appreciate it :))

Answers

The volume of the prism is 103.32 cubic inches (optionD)

What is the volume of a prism?

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.

The formula for the volume of a prism is V=Bh , where B is the base area and h is the height.

The base area of the prism = 4.1×7.2 = 29.52 inches squared.

The height of the prism is 3.5 inches

Therefore volume = base area × height

volume = 29.52× 3.5 = 103.32 cubic inches.

Therefore the volume of the shape is 103.32 cubic inches.

learn more about volume of prism from

https://brainly.com/question/23766958

#SPJ1

what is the sum of 2/3 and 4/5​

Answers

Answer:

1  7/15 or 22/15

Step-by-step explanation:

2/3 = 10/15

4/5 = 12/15

Answer:

2/15

Step-by-step explanation:

The school store is selling shirts at cost for $5.50 and Jackets for $12. The volleyball coach spent $208 to buy a total of 26 shirts and jackets. How many shirts did they buy?​

Answers

Answer:

16 shirts.

Step-by-step explanation:

You can make a system of equations

x + y = 26

5.50x + 12y = 208

You can solve this in many ways, however  chose to graph using desmos. I got that x = 16, and y = 10.

Ty bought a notebook for $3 and pencils $2 if both items were on sale for 25%, what did Tyler spend​?

Answers

Answer:

2.25 + 1.50 = 3.75

he spent $3.75

hope this helped

Step-by-step explanation:

It is the same distance from second base to first base, and from second base to third base. The angle formed by first base, second base, and home plate has the same measure as the angle
formed by third base, second base, and home plate. What can you conclude about the distance from first base to home plate, and from home plate to third base? Explain using your knowledge of congruent triangles.

Answers

Distance between first base to home plate and from home plate to third plate are equal.

Given : It is the same distance from second base to first base, and from second base to third base. The angle formed by first base, second base, and home plate has the same measure as the angle formed by the third base to home plate ,and from home plate to third base.

The given situation and distance between first base to home plate and from home plate to third plate are equal.

On Converting the given situation into a geometry problem. So we name the require points.

Let A be the home plate,

B is first base,

C is the second base,

And D is the third base.

Now, we can present a geometrical proof:

Statement and their reasons

(1) BC = CD - ( Given )

(2) AC = AC - ( Reflexive Property )

(3) Δ ACD = Δ ACB -  ( SAS Congruence - side angle side)

(4) AD = AB - ( CPCTC - Congruent Parts of Congruent Triangles are Congruent )

Therefore, the gap from 1st base to home plate, and from home plate to 3rd plate are equal.

Learn more about congruent triangles at:

https://brainly.com/question/11329400

#SPJ1

Based on the following calculator output, determine the population standard
deviation of the dataset, rounding to the nearest 100th if necessary.
1-Var-Stats
-
86.7142857143
Σæ = 607
Σχ2 = 59459
Sx= 33.72296095
o2 = 31.2213950714
n=7
minX = 52
Q₁ = 55
Med=87
Q3 = 110
maxX = 138

Answers

Therefore , the solution of the given problem of standard deviation comes out to be 67.15=σx .

Define standard deviation.

It tells about how  dispersed the data is is indicated by the standard deviation. It expresses the deviation of each observed variable from the mean. Any distribution will have roughly 95% of its values within two standard deviations of the mean.

Here,

We know population SD= Σ(xi-mu)2/n where mu is the population mean and n is the number of observation.

Here

we have n=7 and mu can be taken as x- =310.142

Standard deviation = SD=Σ(xi-mu)2/n

=>(Σxi2/n)-x-2

=>(704883/7)-(310.14)2=67.15=σx

Therefore , the solution of the given problem of standard deviation comes out to be 67.15=σx .

To know more about standard deviation , visit

https://brainly.com/question/29088233

#SPJ1

Me resuelven está 2 porfa

Answers

a) Each person would receive 1/6 of the cake

b) If there are 49 balls in total and each person is to get seven balls, How many persons can share the balls?

What is the problem?

We know that we can be able to make us of the principles of algebra so as to be able to obtain the problems that we have to deal with in the question that appears in the image that is attached.

Given that we have the total amount of the cake as 2 1/2 and then we are told that there are 15 persons in the class thus the amount that everyone should receive would be x.

2 1/2 = 15 x

5/2 = 15x

5 = 2 * 15x

x = 5/2 * 15

x = 1/6

Learn more about algebra:https://brainly.com/question/24875240

#SPJ1

A culture of bacteria has an initial population of 860 bacteria and doubles every 9 hours. Using the formula P_t = P_0\cdot 2^{\frac{t}{d}}P t ​ =P 0 ​ ⋅2 d t ​ , where P_tP t ​ is the population after hours, P_0P 0 ​ is the initial population, is the time in hours and is the doubling time, what is the population of bacteria in the culture after 4 hours, ?

Answers

Answer:

1170

Step-by-step explanation:P_0=860

P

0

=860

The initial population

t=4

t=4

Time elapsed

d=9

d=9

The doubling time

P_t = P_0\cdot 2^{\frac{t}{d}}

P

t

=P

0

⋅2

d

t

P_t=860\cdot 2^\frac{4}{9}

P

t

=860⋅2

9

4

Plug in

P_t=1170.2794\approx1170

P

t

=1170.2794≈1170

In an amphitheater, eat are aranged in 50 emi-circular rowfacing a dome tate. The firt row contain 23 eat, and each row contain4more eat than the previou row. How many eat are in the amphitheater?

Answers

In an amphitheater, seat are arranged in 50 semi-circular row-facing a dome Tate. The first row contain 23 seat, and each row contain 4 more eat than the previous row. Therefore, there are 6050 seat are in the amphitheater.

Given that:

There are total 50 semi circular row.

In the first row there are 23 seats.

The given problem is AP series:

Arithmetic Series:

An arithmetic sequence is defined as an algebraic sequence in which each successive term has an equal difference. It is obtained by adding a constant to any preceding term. For the first term 'a' and the tolerance 'd' of the AP, here is a list of commonly used arithmetic progressions to solve various AP related problems:

Common Difference of AP: d = a2 - a1 = a3 - a2 = a4 - a3 = an - a(n-1)  nth term of AP.AP: an = a + (n - 1)d of AP Sum of n terms: Sn = n/ 2( 2a+(n-1)d) = n/2(a + l),

where l is the last term in the arithmetic progression.

Now,

Sum of n terms  = n/2 [ 2a + (n-1)d]

                          = 50/2 [ 2× 23 + (50 -1)4]

                          = 25 [46 + 49×4]

                          = 25 × 242

                          = 6050

Learn more about Semi circular Row Facing:

https://brainly.com/question/13135497

#SPJ4

when processing an invoice what account is credited
a. accounts receivable
b. cash
c. accounts payable
d. the answer depends on the transaction

Answers

Answer:

accounts payable

Step-by-step explanation:

Because amount of money you owe

A city has 5 cm of snow on the ground before a snow storm. During the storm, the amount of snow on the ground increases by 2 cm an hour.
which table shows a smaller rate of change than the one described?
Time Snow on Ground
(hours) (cm)
0
3
1
9
2
15
3
21
Time
(hours)
0
A
Ос.
Snow on Ground
(cm)
5
10
15
1
2
3
20
Time
(hours)
0
B.
Time Snow on Ground
(hours) (cm)
0
4
1
6
2
8
3
10
Snow on Ground
(cm)
6
7
8
9
1
2
3

Answers

Answer:

The answer is D because the snow on the ground increases 1 cm every one hour rather than 2 cm every hour.

Step-by-step explanation:

Can some one help me with this question its hard :( down below ill give brainliest

Answers

The answer is m^4.
An explanation is in the picture.

Habib cut out a rectangle that ha a perimeter of 60 inche and a length of 16 inche. They cut out another rectangle that i the ame length and twice a wide

Answers

The required perimeter of the new rectangle is 66 inches.

What is a rectangle?

A quadrilateral with all of its angles equal, or right angles, is a rectangle.

In addition to having all equal angles, a square also has all equal sides.

Therefore, a particular case of a square is a rectangle.

To put it another way, a rectangle can also be a square (when all sides to are equal).

Because every square is a quadrilateral with all four angles at right angles, every square is also a rectangle.

To be a square, a rectangle's sides must all be the same length, hence not all rectangles are squares.

So, a perimeter equals 2(l+b).

50 is the circumference and 17 is the length here.

Suppose the breadth is x.

50 = 2(17+x)

50 = (2*17)+(2*x)

50 = 34 + 2x

50 - 34 = 2x

16 = 2x

16/2 = x

8 = x

The first triangle's width is eight inches.

We know that the length of the other rectangle is 17.

And that the width is two times that of the first triangle.

Length = 17, width = 2*8 = 16, etc.

For the border:

p = 2(l+b)

p =  2(17+16)

p =  (2*17)+(2*16)

p =   34+32

p  =   66

Therefore, the required perimeter of the new rectangle is 66 inches.

Know more about rectangles here:

https://brainly.com/question/25292087

#SPJ4

Complete question:

Najib cuts out a rectangle that has a perimeter of 50 inches and a length of 17 inches. He cuts out another rectangle that is the same length and twice as wide. What is the perimeter of the new rectangle?

1
Q4. What is the length of the base of a triangle that has an area of 15 cm
and a height of 3 cm?
O A) 12 cm
B) 10 cm
C) 45 cm
D) 3 cm
Q5

Answers

A) 12 cm ..............

Answer:

Area of a triangle= b · h/2

b) 10 is the correct answer because 10 x 3/2 = 15

If the height of the triangle given below is 35 cm, what then is its area? (Round your final answer to the tenths place, if necessary).

Answers

Answer:

I need the width in order to solve it. . .

Formula - To calculate the area of a triangle, multiply the height by the width (this is also known as the 'base') then divide by 2.

Was there a width?

Other Questions
How long will it take for a body accelerating by 2 m/s to gain a velocity of 10 m/s, starting from rest. Can anyone help? Please explain Ill give brainliest Use the equation below to find the selling price m of one marker Help Ill give extra points Synthesize In your own words, explain the effect of sea otters on kelp forests, and whatEstes's findings suggest about managing predator-pray relationships in local environments. If the market interest rate is lower than the contractual interest rate, bonds will sell a. at face value. b at a premium. c. at a discount. d.only after the stated interest rate is increased. What is ATP and ADP? I need help this makes no sense PQ || NM. What equation can you use to find the length of OQ? Is China a dictator country? Which of the following recommendations won't improve the readability of your SQL statements?a) Break long clauses into multiple lines.b) Use comments to describe what each statement does.c) Start each clause on a new line.d) Indent continued lines. 4. Automotive Trades At the beginning of the day on Monday, the partsdepartment has on hand 520 spark plugs. Mechanics in the service depart-ment estimate they will need about 48 plugs per day. A new shipment of300 will arrive on Thursday. Write out a mathematical statement that givesthe number of spark plugs on hand at the end of the day on Friday. Calcu-late this total.StS estimate What are some of the employment trends currently happening in Health Science? Help Please, its due by 10The poem is at the bottomAnswer the following 2 questions about the poem Landscape withThe Fall of Icarus1) What makes this poem read like a short story instead of a poem?A) No punctuationB) Minimal figurative languageC) Lack of rhyme and meterD) No dialogue2) What makes this poem read like a stream of consciousness narrative?A) No punctuationB) Minimal figurative languageC) Lack of rhyme and meterD) No dialogueLandscape With The Fall of Icarusby William Carlos WilliamsAccording to Brueghelwhen Icarus fellit was springa farmer was ploughinghis fieldthe whole pageantryof the year wasawake tinglingnearthe edge of the seaconcerned with itselfsweating in the sunthat meltedthe wings' waxunsignificantlyoff the coastthere wasa splash quite unnoticedthis wasIcarus drowning In your opinion what do you need for a high quality of life? How does this connect to the physical environment in which you live? IF YOU POST THE LINK YOU GET REPORTED! Solve for all values of x by factoring.x^26x+20=6x Please help me solve fill in the blank with the correct form of the verb in parenthesis: Helpppp plzzz its so hard Determine the range of f(x) = x + 51.A-{yl-00 B-{y 1-5 C-{y|0 y