2 -7
-9
5
Given A=
and B-
6
1
-1
If X-A=B, what is X?
-2
O
7
0
-11
12
-2
-5
-7 -12
5
0
11-12

2 -7-95Given A=and B-61-1If X-A=B, What Is X?-2O70-1112-2-5-7 -125011-12

Answers

Answer 1

Answer:

it is b              furqufhrfhquh quf hqhf

Step-by-step explanation:bfygefy eyfeyfyewfyefwef eqf  

\fn qf7f

Answer 2

The value of the matrix X is X =  [tex]\left[\begin{array}{ccc}-7&-2\\7&0\\\end{array}\right][/tex].

What are Matrices?

Matrices are a set of numbers arranged in such a way that the numbers are arranged in rows and columns.

Each number is called element in a matrix.

Given are two matrices.

A = [tex]\left[\begin{array}{ccc}2&-7\\6&1\\\end{array}\right][/tex] and B = [tex]\left[\begin{array}{ccc}-9&5\\1&-1\\\end{array}\right][/tex]

We have given that, a matrix X exists such that,

X - A = B

We can rearrange this as,

X = A + B

Adding the two matrices,

The entries will be,

2 - 9 = -7

-7 + 5 = -2

6 + 1 = 7

1 - 1 = 0

X =  [tex]\left[\begin{array}{ccc}-7&-2\\7&0\\\end{array}\right][/tex]

Hence the X is option A.

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Related Questions

Find the missing side length of the right triangle below.
26 cm
10 cm
b

Answers

Answer:

24

Step-by-step explanation:

we'll use the pythagoras theorm, but change it a little

instead of a² + b² = c², we'll use c² - a² = b²

26² - 10² = 576

the square root of 576 is 24, and that's the answer :)

I said 24 as well I think

a - b/c when a = 0.6, b = 0.2, and c = 0.5

Answers

I believe the answer is 0.2

Answer:

a-b/c

or

0.6-0.2/.5

0.6-0.4

0.2

Yoo can somebody help me?

On each triangle, solve both of them and round to the nearest tenth. Make sure to show your work for both. Thank you in advance.

Answers

Answer:

Step-by-step explanation:

Triangle 1   given:  100° , 17 yds,  30 yds

Triangle 2 given: 30 ,17,18

law of cosines: c^2 = a^2 + b^2 − 2ab cos(C)

we'll also  need the formula for a SSS triangle

Cos(C) = a^2 + b^2 - c^2 / 2ab

keeping the above in mind we can now solve both triangles

c = AC for the first triangle

solve law of cosines for what we know

c^2= 17^2 + 30^2 - 2*17*30*Cos(100)

c = 36.96

now use SSS triangle  formula to find the angle C, but c = 17 now , not 36.96, that's b

C = arcCos(17^2+36.96^2-30^2/ 2*17*36.96)

C = 42.24°

now use 180 = 100 +42.24 +A   to solve the last angle

A= 37.75°

Triangle 1 solved

A= 37.75°

B= 100

C = 42.24°

a= 17

b=30

c=36.96

Triangle 2  

given a=17 , b= 18 , c =30

use SSS formula to find one angle, which ever one you want in this case

Cos(C) = a^2 + b^2 - c^2 / 2ab

C = arcCos(17^2+18^2-30^2 / 2*17*18

C= 117.966°

solve for A now

Cos(A) =b^2+c^2-a^2 / 2bc

A = arcCos(18^2+30^2-17^2/2*18*30)

A = 30.03

use 180 again to solve for last angle

180 = 117.966+30.03+B

32.001 = B

Triangle 2 solved

A = 30.03°

B= 32.001°

C= 117.966°

a=17

b=18

c=30

:P  whew  

A circular park has a circumference of 94 ft. find d, the diameter of the garden in feet

Answers

Answer:

94 / π = 29.9211293...

Step-by-step explanation:

brainliest plz

5(d+6)? Help now pls

Answers

Answer:

5d + 30

Step-by-step explanation:

SOLVE

Given;

5(d+6)

Solution;If d has no value to evaluate, then here is the solution.[tex] \\ = \sf5(d+6)[/tex][tex] \sf = (5)(d + 6)[/tex][tex] = \sf(5)(d) + (5)(6)[/tex][tex] = \sf \: \green5 \green d \green+ \green3 \green0 \\ \\ [/tex]

What is the true solution to 3 In 2+ In 8 = 2 In(4x)?
Ox=1 X=2
OX=4
OX= 8

Answers

Answer:

x=2

Step-by-step explanation:

The true solution to the equation  3log2 + log 8 = 2 log(4x) is x=2, Option B is correct.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given equation is 3log2 + log 8 = 2 log(4x)

We have to calculate the value of x

We know that,  x logb=log bˣ

and loga + logb = logab

The equation is 3log2 + log 8 = 2 log(4x)

log 8+ log 8= log 16x²

log64/log 16=x²

4=x²

Take square root on both sides

x=2

Hence, the true solution to the equation  3log2 + log 8 = 2 log(4x) is x=2, Option B is correct.

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(1) Here is a diagram representing a base-ten number. The large rectangle represents a unit that is 10 times the value of the square. The square represents a unit that is 10 times the value of the small rectangle. If the large rectangle represents 1,000, what number is this? *

Answers

Answer:

Square = 100

Small rectangle = 10

Step-by-step explanation:

Large Rectangle = 1000

If the square represents ten times the large rectangle. Then divide by 10.

Square = 100

Then divide by 10 again.

100÷10=10


Find the area of the triangle pictured above.

Answers

Answer:

24.5

Step-by-step explanation:

7^2=49

49/2=24.5

9. The Empire State Building in New York is
hit by lightning about 100 times a year.
The building opened in 1931. About how
many times was it hit by lightning by the
year 2000? (69 years)

Answers

6,900 times is the answer,also can i get brainliest

Tony's Tires has shown growth over the last month that follows the
equation Sales = 4(Day of the month) +16. On what day of the month will
Tony's Tires double its first day sales?​

Answers

Answer:

Step-by-step explanation:

The sales will double on the 6th day of the month

The equation sales for last month = 4(day of the month) + 16

let

x = day of the month

The day of the month could be 1, 2, 3, 4, 5, 6, 7, 8...…31. The numbers represents the first, second, third ,...… thirty first day.

Sales = 4x + 16

From the equation, on the first day his sales  will be :

sales = 4(1) + 16 = 20 units

The double of 20 units is 40 units. Therefore, the day of the month which the sales will double can be calculated below

40 = 4x + 16

40 - 16 = 4x

4x = 24

x = 24 / 4

x = 6

it will double on the 6th day.

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can someone help me please​

Answers

Answer:

C'(-3, -3)

D'(-2, 1)

E'(-1, 0)

F'(2, -2)

Step-by-step explanation:

Add 2 to the x coordinates and subtract 2 from the y coordinates.

C'(-5+2, -1-2)

D'(-4+2, 3-2)

E'(-3+2, 2-2)

F'(-2+2, 0-2)

C'(-3,-3)

D'(-2,1)

E'(-1,0)

F'(2,-2)

The box is 7.5 inches
long, 7 inches high,
and 5 inches wide.
What is the surface area of the built box?
Pls answer!!

Answers

Answer:37.5 square inches

Step-by-step explanation:

If the probability of getting a head on an unfair coin is 78%, what is the probability of getting a tail?

Answers

Answer:

22% or 22/100 which is 11/50

Step-by-step explanation:

Pls help me hurry thanks you

Answers

number 3 would be right, since “mean” means average, and the other two are providing more on the numbers given, and number 3 is giving a general answer
number 3 would be the correct answer

8 X 1 3/5 how to multiply a whole number by mixed number

Answers

Answer:

12 4/5

Step-by-step explanation:

helpppppppppppppppppppppppppppppppppppppp

Answers

Answer:

Area of a rectangle =  l × w

=  1.4 × 2.1

=  2.94 meters ^2

hope it helps. sorry if its wrong. this is my own knowledge

1058 rounded to the nearest hundred

Answers

Answer:

1100

Step-by-step explanation:

Rounded to nearest hundred

Here we will tell you what 1058 is rounded to the nearest hundred and also show you what rules we used to get to the answer.

Remember, we did not necessarily round up or down, but to the hundred that is nearest to 1058.

First, 1058 rounded to the nearest hundred is:

1100

When rounding to the nearest hundred, like we did with 1058 above, we use the following rules:

A) We round the number up to the nearest hundred if the last two digits in the number are 50 or above.

B) We round the number down to the nearest hundred if the last two digits in the number are 49 or below.

C) If the last two digits are 00, then we do not have to do any rounding, because it is already to the hundred.

Helppppp pleaseeee xxx

Answers

The answer is 92 yd^2. You just need to separate the big shape into three smaller rectangles and find the area of each then add them all together. I did 13x4= 52. Then 4x5= 20. Then 4x5= 20 again. Then I added them all and it equals 92.

Find the area of an equilateral triangle with a side of 10.
a

Answers

A. 25 SQRT3 units^2 = area

What is the vector sum of 7, 5 and 13, −5? 20, 0 20, 10 6, 0 6, 10

Answers

Answer:

{20, 0}.

Step-by-step explanation:

A sphere has a volume of 36(pi) in^3. What is the surface area in terms of Pi

Answers

Answer:

la verdad que depende de la situación

Help me pls

Ms. Manalo is reviewing her 2018 property taxes.

Use the tax form to complete the statements below.

Answers

What is under the dropper for me to answer

The total assessed value of Ms. Manalo's property was $5,00,000

The total property tax rate was 1.7%

Ms. Manalo paid a total of $8,500 to her local government as a property tax in 2018.

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

To Calculate the percent of a number , divide the number by whole number and multiply by 100.

Given that;

Ms. Manalo is reviewing her 2018 property taxes.

Now, We get by given data;

The total assessed value of Ms. Manalo's property was,

⇒ $84,785 + $415,215

⇒ $5,00,000

And, The total property tax rate was ,

0.8% + 0.5% + 0.2% + 0.1% + 0.1%

1.7%

And, Ms. Manalo paid a total to her local government as a property tax in 2018 is,

1.7% of 5,00,000

1.7/100 x 5,00,000

8,500

So, The total assessed value of Ms. Manalo's property was $5,00,000

The total property tax rate was 1.7%

Ms. Manalo paid a total of $8,500 to her local government as a property tax in 2018.

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Once Farid spends 15 minutes on a single level in his favorite video game, he loses a life. He has already spent 10 minutes on the level he's playing now.

Answers

Answer:

0.6666 or [tex]\frac{1}{3}[/tex]

Step-by-step explanation:

Since this is a ratio problem we can simply use the rule of three to solve it. We need to multiply the diagonal values and divide by the remaining value to get the variable which in this case is x (how much life he has already lost)

15 minutes   <=======>   1 life

10 minutes   <=======>   x

(10 * 1) / 15 = x

10 / 15 = x

0.6666 or [tex]\frac{1}{3}[/tex]  = x

Finally, we can see that Farid has lost 0.6666 or [tex]\frac{1}{3}[/tex] in those 10 minutes

What is the value of 2a-b

Answers

Answer:

The answer is 13.

Step-by-step explanation:

(b) Find the value of 2a + b: Remember that 2a means 2 × a. Replacing a by 4 and b by 7 gives 2×4 + 7.

Two possible values for 2a - b are 4i√2 and -4i√2, where 'i' is the imaginary unit.

To find the value of 2a - b, we need to eliminate 'b' from the two equations given.

Given equations:

1. 2a + b = 4

2. ab = -3

Let's solve for 'a' and 'b' using these equations.

Step 1: Solve for 'b' in terms of 'a' from equation (1).

2a + b = 4

b = 4 - 2a

Step 2: Substitute the value of 'b' from step 1 into equation (2).

a(4 - 2a) = -3

[tex]4a - 2a^2 = -3[/tex]

Step 3: Rearrange the equation to a quadratic form:

[tex]2a^2 - 4a + 3 = 0[/tex]

Step 4: Solve the quadratic equation for 'a'. You can use the quadratic formula:

a = [ -(-4) ± √([tex](-4)^2[/tex] - 4*2*3) ] / (2*2)

a = [ 4 ± √(16 - 24) ] / 4

a = [ 4 ± √(-8) ] / 4

a = [ 4 ± 2i√2 ] / 4

a = 1 ± i√2

Now we have two possible values for 'a': a = 1 + i√2 and a = 1 - i√2, where 'i' is the imaginary unit (√(-1)).

Step 5: Find the corresponding values of 'b' using the equation b = 4 - 2a.

For a = 1 + i√2:

b = 4 - 2(1 + i√2) = 4 - 2 - 2i√2 = 2 - 2i√2

For a = 1 - i√2:

b = 4 - 2(1 - i√2) = 4 - 2 + 2i√2 = 2 + 2i√2

Now we have two sets of values for 'a' and 'b':

1. a = 1 + i√2, b = 2 - 2i√2

2. a = 1 - i√2, b = 2 + 2i√2

Step 6: Calculate the value of 2a - b for each set of values:

For a = 1 + i√2, b = 2 - 2i√2:

2a - b = 2(1 + i√2) - (2 - 2i√2)

        = 2 + 2i√2 - 2 + 2i√2

        = 4i√2

For a = 1 - i√2, b = 2 + 2i√2:

2a - b = 2(1 - i√2) - (2 + 2i√2)

        = 2 - 2i√2 - 2 - 2i√2

        = -4i√2

So, the two possible values for 2a - b are 4i√2 and -4i√2, where 'i' is the imaginary unit.

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Complete Question:

If 2a + b = 4 and ab = -3, what is the value of 2a - b


ASAP PLEASE HELP I will give brainliest

Answers

I think it might be A

8x^2+10x+3=0 quadratic formula

Answers

8x2 equal to 16 and plus 10 is 26x plus 3 equal to 78

The mean time between failures (MTBF) is a common metric used to measure the performance of manufacturing systems. MTBF is the elapsed time between failures of a system during normal operations. The failures could be caused by broken machines or computer errors, among other failures. Suppose that the MTBF for a new automated manufacturing system follows an exponential distribution with a mean of 12.2 hours. (a) What is the probability that the automated manufacturing system runs for more than 18 hours without a failure

Answers

Answer:

0.2287

Step-by-step explanation:

The computation of the probability that the automated manufacturing system runs for more than 18 hours without a failure is shown below:

P(X > 17) = 1 - P(X < 17)

= 1 - [1 - e^-18 ÷ 12.2]]

= 1 - [1 -0.228684984 ]

= 0.2287

2. Suppose you are considering buying a Toyota Prius, which starts at $25,000 and gets 50
mpg. A similarly equipped Honda Accord will start at $22,000 but will get 31 mpg.
(a) How many miles will it take the Prius to recoup the price difference?

Answers

Answer:

If a gallon of gas costs $2.9

The Prius can drive 50 miles with one gallon.

then for m miles, it needs:

(m/50) gallons.

and each gallon costs $2.9

Then for driving m miles, the cost would be:

(m/50)*$2.9

Then the total cost of buying the Prius and driving for m miles is:

P(m) = $25,000 + (m/50)*$2.9

We can do a similar approach for the Accord's case.

The Accord can drive 31 miles with one gallon.

Then if it drives m miles, it will need:

(m/31) gallons.

And knowing that each gallon costs $2.9, the cost for driving m miles is:

(m/31)*$2.9

Then the total cost of buying an Accord and driving for m miles is:

A(m) = $22,000 + (m/31)*$2.9

We want to find the value of m, such that the cost of the Prius is smaller than the cost of the Accord.

Then the first thing we need to find is the value of m such that the costs are equal:

P(m) = A(m)

$25,000 + (m/50)*$2.9 = $22,000 + (m/31)*$2.9

$25,000 - $22,000 = (m/31)*$2.9 -  (m/50)*$2.9

$3,000 = m*$2.9*(1/31 - 1/50)

$3,000/($2.9*(1/31 - 1/50)) = m = 84,392

This means that if you drive more than 84,392 miles, then the cost of the Prius will be smaller.

I

Pls help

Find the surface area of the composite figure.

Answers

Answer:

644 cm³

Step-by-step explanation:

Surface area of the composite figure = (surface area of the upper cuboid - base area of upper cuboid) + (surface area of the lower cuboid - base area of the upper cuboid)

✔️Surface area of upper cuboid = 2(LW + LH + WH)

L = 3

W = 3

H = 8

Surface area of upper cuboid = 2(3*3 + 3*8 + 3*8) = 2(9 + 24 + 24) = 114 cm²

✔️Surface area of Surface area of lower cuboid = 2(LW + LH + WH)

L = 12

W = 10

H = 7

Surface area of lower cuboid = 2(12*10 + 12*7 + 10*7) = 2(120 + 84 + 70) = 548 cm²

✔️Base area of upper cuboid = L*W

L = 3

W = 3

Base area = 3*3 = 9 cm²

✅Surface area of the composite figure = (114 - 9) + (548 - 9) = 105 + 539 = 644 cm³

Construct isosceles triangle ABC such that AB = AC = 10 cm and CB = 9 cm. Measure and write down the size of angle ABC.

Answers

Answer:

∠ABC = 63.26°

Step-by-step explanation:

cos ∠ABC = (9/2)/10

cos ∠ABC = 0.45

∠ABC = 63.26°

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