Answer:
1.3
Step-by-step explanation:
the internet said it was 1.3
What is identity matrix with example.
Answer:
An identity matrix is a square matrix having 1s on the main diagonal, and 0s everywhere else. For example, the 2×2 and 3×3 identity matrices are shown below. These are called identity matrices because, when you multiply them with a compatible matrix , you get back the same matrix
Step-by-step explanation:
mark as brainliest pls :)Answer:
An identity matrix is a square matrix having 1s on the main diagonal, and 0s everywhere else. For example, the 2×2 and 3×3 identity matrices are shown below. These are called identity matrices because, when you multiply them with a compatible matrix , you get back the same matrix.
Identity Matrix is the matrix which is n × n square matrix where the diagonal consist of ones and the other elements are all zeros. It is also called as a Unit Matrix or Elementary matrix. It is represented as In or just by I, where n represents the size of the square matrix. Identity Matrix is denoted with the letter “In×n”, where n×n represents the order of the matrix.
One of the important properties of identity matrix is: A×In×n = A, where A is any square matrix of order n×n.
Hope this helped
HEELLLLLLLLLLLLLLLLPPPPPPPPPPP PLZZZZZZZZZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Answer:
x = 21
Step-by-step explanation:
equation:
⇒ 44 + 6x + 10 = 180
add like terms:
⇒ 44 + 6x + 10 = 180
⇒ 54 + 6x = 180
subtract 54 on both sides
⇒ 54 - 54 + 6x = 180 - 54
⇒ 6x = 126
divide 6 on both sides
⇒ [tex]\frac{6x}{6} = \frac{126}{6}[/tex]
⇒ x = 21
to check:
44 + (6x + 10) = 180
44 + (6 x 21 + 10) = 180
44 + 136 = 180
180 = 180
PLEASE ANSWER!!!!!!!!!
Answer:
1/15
Step-by-step explanation:
no. of students who participate in all of the three activities is 2.
So, the possibility is 2/15 = 1/15
Ans: 1/15
5(x + 9) = 5x + 45?
What property is this equation?
Answer:
distributive property
If you bike for 3 hours at 10 mph and then walk for 1hr at 2mph, what would be your average speed
Answer:
it depends how fat you are....BUT the average speed would be 8 I THINK but i might be right
Step-by-step explanation:
circumference of circle 132cm find the area of circle is
Answer: 1386 sq.cm.
Step-by-step explanation:
2Pi r= 132
2 * 22/7 * r = 132
r = 21
Area = pi * r * r
= 22/7 * 21 * 21
= 1386 sq.cm.
Hope this helps :))
What is the CIRCUMFERENCE of this pie?
Give an approximate answer by using 3.14 for π.
SHOW YOUR WORK!
Using the letters GBLAOKZE you select the A from the group without replacing the A,you select a second letter.find P(not K)
Answer:
Step-by-step explanation:
After selecting A there are 6 letters that are not K out of the remaining 7 letters so
P(!K)=6/7
Mary had a lemonade stand. During one day she sold 117 cups of lemonade. If each cup contained 226 milliliters of the beverage, how many liters did she sell in all?
Solve for u.
5u - 15 = 10
Solve for u
|5u-15|=10
If there is more than one solution, separate them with commas.
If there is no solution, click on "No solution".
U =
=
No
solution
D
Answer:
5u-15=10 |+15
5u=25 |:5
u=5
The solution is 25
I hope it helps
have anice day
What is the answer for this quiestion
Answer:
What up why is there no question
Step-by-step explanation:
which expressions are equivalent to 2 to the power of 6? Choose ALL that apply
Give l m n find the value of x
Answer:
x=13
Step-by-step explanation:
The two angles form a straight line so they add to 180 degrees
9x+17 + 3x+7 = 180
Combine like terms
12x +24 =180
Subtract 12 from each side
12x+24-24 =180-24
12x =156
Divide each side by 12
12x/12 =156/12
x=13
[tex]82.5.5. \div \times 552.6365 |. < 5 \geqslant 6 > { {0}^{?} }^{2} | [/tex]
Find f'(x) for the given function.
f(x) = 5/3-x
Answer:
The derivative is:
[tex]f^{\prime}(x) = -\frac{5}{x^2-6x+9}[/tex]
Step-by-step explanation:
We are given the following function:
[tex]f(x) = \frac{5}{3-x}[/tex]
Derivative of a quotient:
Suppose we have a quotient:
[tex]f(x) = \frac{g(x)}{h(x)}[/tex]
The derivative is:
[tex]f^{\prime}(x) = \frac{g^{\prime}(x)h(x) - h^{\prime}(x)g(x)}{h(x)^2}[/tex]
In this question:
Numerator [tex]g(x) = 5, g^{\prime}(x) = 0[/tex]
Denominator [tex]h(x) = 3 - x, h^{\prime}(x) = -1[/tex]
So
[tex]f^{\prime}(x) = \frac{0(3-x) - 5}{(3 - x)^2} = -\frac{5}{x^2-6x+9}[/tex]
The derivative is:
[tex]f^{\prime}(x) = -\frac{5}{x^2-6x+9}[/tex]
please answer all the questions for brainliest and 40 points also if you don't answer the question on correctly I will report and you will not get anything
1. Patrick made a scale drawing of a newly planned hotel.
The height of the scale drawing is 27 inches. The actual height of the hotel would be _________ ( Responses: 54, 243, 270, 600) _________ meters.
2. Mr. Twain asked the students in his class to redraw the figure below using a scale factor of 3. Then, he asked students to tell him one of the new side lengths of the figure. Some student responses are below.
Student Response
Mark 5 in.
Samantha 6 in.
Divia 1.3 in.
Cheng 0.9 in.
Candice 11.7 in.
Select the student that answered Mr. Twain's question correctly.
A. Mark
B. Divia
C. Cheng
D. Candice
3. Louis is constructing a scale model of a regulation size soccer field that measures 90 meters wide and 120 meters long. If the longest side of his model is 24 cm long, what is the width of the model?
A. 4.5 cm
B. 18 cm
C. 22.5 cm
D. 32 cm
4. Two sides of a triangle are 2 inches and 7 inches. Which could be the length of the third side? Select Yes or No for each measurement.
Yes No
5 inches
6 inches
8 inches
10 inches
5. A triangle has a side 3.5 inches in length, a 34° angle, and a 49° angle. Which of the following statements about this triangle are false? Select two that apply.
A. This triangle must have two sides that are 3.5 inches in length.
B. This triangle is an obtuse triangle.
C. This triangle could be a scalene triangle.
D. This triangle is an isosceles triangle.
6. Select the figure that can be formed when a cube is cut by a plane parallel to its base.
A. line
B. square
C. trapezoid
D. triangle
7. Select all figures that can be formed when a rectangular pyramid is cut by a plane parallel to its base.
A. point
B. rectangle
C. trapezoid
D. triangle
8. This is a cylinder.
Select all figures that can be formed by a vertical slice perpendicular to the bases of the cylinder.
A. circle
B. line segment
C. rectangle
D. oval
9. A family just removed a big tree from their backyard. The diameter of the circular hole left behind is 7 feet across. Approximately how many square feet of grass will the family need if they want to cover the area where the tree once was?
A. 22 ft²
B. 39 ft²
C. 44 ft²
D. 154 ft²
Answer:
2. is b
3.is d
4.is b
5
Step-by-step explanation:
I've done these before
have a good grade
64 Books on 4 Shelves how maany books per Shelf?
Answer:
256
Step-by-step explanation:
Answer:
16 is the answer because 64/4 is 16 so 16*4 is 64 meaning that there are 16 books on each shelf
Step-by-step explanation:
hope this helped
giving brainliest ! *easy*
pi = 180
3(180) 540
-------- = -------
5 5
Answer is 108 degrees
Factorise fully 4x-x³
Answer:
[tex]x(2 - x)(2 + x)[/tex]
Write an equation for this tape diagram 6th grade math help pls thanks if you do
Answer: x(15x)
Step-by-step explanation:
10 points pls answer!
Answer:
a
Step-by-step explanation:
8x-20 and 3x together will equal 90
Answer:
The answer is D
Step-by-step explanation:
A picture is mounted on a frame measuring 25 centimeters by
15 centimeters. It has a border of 3 centimeters round it. Find the area
and perimeter of the picture.
25 cm
13 cm
A=kW
P-HIWAW
3 cm
picture 3 cm
115 cm
13 cm
cm
Answer:
I think it's 1,125 and 4485
Step-by-step explanation:
25x13x3
115x13x3
2. Write the coefficient of 'a' in each of the '-24 ab2c
Answer:
The numerical coefficient in the expression 4x2y−23xy+25xy2 is 4,2−3,25 respectively
The numerical coefficient in the expression 3−5x2y+47xyz+3 is 3−5,47 respectively.
3 is a constant term.
Here's a graph of a linear function. Write the equation that describes that function
ANSWER ASAP I WILL GIVE BRAINLIEST
Answer:
Period=pi amplitud=1
Step-by-step explanation:
How do you find slopes of two points for example (9, 6) and (4, 4)?
Answer:
[tex]\frac{2}{5}[/tex]
Step-by-step explanation:
Use the following equation:
slope (m) = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]
Let:
[tex](x_1 , y_1) = (4 , 4)\\(x_2 , y_2) = (9 , 6)[/tex]
Plug in the corresponding numbers to the corresponding variables:
m = [tex]\frac{6 - 4}{9 - 4} = \frac{2}{5}[/tex]
[tex]\frac{2}{5}[/tex] is your slope.
Answer:
[tex]m = \frac{2}{5} [/tex]
Step-by-step explanation:
Slope is equal to the change in y over the change in x, or rise over run.
[tex]m = \frac{change \: in \: y}{cahnge \: in \: x} [/tex]
The change in x is equal to the difference in x-coordinates and the change in y is equal to the difference in y-coordinates.
[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]
Substitute in the values of x and y into the equation to find the slope.
[tex]m = \frac{4 - (6)}{4 - (9)} [/tex]
Simplify.
[tex]m = \frac{2}{5} [/tex]
Therefor, the answer is m = 2/5.
The total area of a rectangle is represented by (x²+9 x+18) sq units.Find the expression for the dimensions of the rectangle.
Answer:
x+3 units and x+6 units
Step-by-step explanation:
Give the total area of a rectangle is represented by (x²+9 x+18) sq units.F
Factorize
x²+9 x+18
- x^2 + 6x + 3x + 18
= x(x+6) + 3(x+6)
= (x+3)(x+6)
Since Area = Length * Width
The dimensions of the rectangle are x+3 and x+6 units
don’t understand someone explain please
Answer:
Sin A = 11/61
Step-by-step explanation:
Reference angle (θ) = A
opp = 11
Hyp = 61
Adj = 60
Sin θ = opp/hyp
Sin A = 11/61
Translate the phrase into an algebraic expression: the ratio of 12x and 19y
Answer:
228 x y or x^2+3x+2
Step-by-step explanation:
the ratio of 12x 19y
Factorise 12u-uv please help lol
Answer:
u(12-v)
Step-by-step explanation:
12u and -uv both have a factor of u in common, so we can pull it out to give us the factored expression u(12-v).
Note on factoring:
Remember, it's just using the distributive property in reverse! We can get our original expression back by distributing the u to the 12 and the -v.
