Given:
A straight line goes through (-2,1), (0,0), and (2,-1).
To find:
The slope of the given line.
Solution:
Slope formula
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Consider any two points from the given points.
The line goes through (-2,1) and (0,0). So, the slope of the line is
[tex]m=\dfrac{0-1}{0-(-2)}[/tex]
[tex]m=\dfrac{-1}{2}[/tex]
Therefore, the slope of the line is [tex]m=-\dfrac{1}{2}[/tex].
Answer:
its 2/3
Step-by-step explanation:
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
nine more than the quotient of 2 and a number of x
Answer: 9 + 2/x - x = -19
i need the answers to
x, y, and m
Answer:
x= 79 y= 15 m=54
Step-by-step explanation:
both triangles are basically mirrored, so since x+11 is in the same position as angle H the real equation would be: x+11=90 and the same thing for y+7 because that side is the same as side FG the equation would be y+7=22. For M since angles E and H are 35 and 90 you just add them together and then subtract them from 180 because are triangles add up to 180 degrees in terms of angles not sides.
Answer:
y = 15
x = 1.93 wrong x = 79
m∠GFH = 54°
Step-by-step explanation:
y + 7 = 22
y = 15
sin 36° = (x + 11)/22
0.5878 = (x + 11)/22
x + 11 = 12.93
x = 1.93
m∠GFH = 90° - 36° = 54°
Find the slope of the line that passes through (10, 10) and (8, 11).
Simplify your answer and write it as a proper fraction, improper fraction, or integer.
Answer:
= -1/2
Step-by-step explanation:
We can use the slope formula
m = (y2-y1)/(x2-x1)
= (11-10)/(8-10)
= 1/-2
= -1/2
hi pls help me in math im soo stuck:(((plss
Answer/Step-by-step explanation:
a. First, find the value of a.
Sum of the interior angles of a triangle = 180° (triangle sum theorem)
Therefore:
3a + 2a + a = 180°
Add like terms
6a = 180°
6a/6 = 180/6
a = 30
Thus:
a = 30°
2a = 2(30) = 60°
3a = 3(30) = 90°
b. The triangle is an isosceles triangle because it has two sides that are indicated to be equal. This also implies that the angels opposite each of the equal sides are also congruent to each other.
Therefore, sum of the isosceles triangle would be:
2(2x) + 5x = 180°
4x + 5x = 180
9x = 180
9x/9 = 180/9
x = 20
Thus:
2x = 2(20) = 40
5x = 5(20) = 100
What is the area of the shaded region?
Answer:
12 cm^2
Step-by-step explanation:
Marta’s math textbook weighs 4/5 of a pound less than 4 times the weight of the book she is reading for her language arts class. If the weight of the math textbook is 2 1/5 pounds, which shows the correct equation and value of x, the weight of Marta’s book for language arts?
What is exponential growth and exponential decay?
Answer:
In exponential growth, the rate of growth is proportional to the quantity present. In other words, y′=ky. Systems that exhibit exponential growth have a constant doubling time, which is given by (ln2)/k. Systems that exhibit exponential decay have a constant half-life, which is given by (ln2)/k
Step-by-step explanation:
There is your answer good luck! - Alexsys
Answer:
In some cases with exponential functions, as the value of x increases, the value of y also increases. This is a direct relationship known as exponential growth. As the value of x increases, the value of y grows rapidly. ... This is an inverse relationship known as decay.
Step-by-step explanation:
I hope this answer has helped you
A researcher in sports equipment is investigating the design of racing swimsuits for women. The researcher selected a sample of 40 women swimmers from high school swim teams in the state and randomly assigned each swimmer to one of two groups: suit A or suit B. The women will wear the assigned suits for a certain race, and the mean swim times for each group will be recorded. The difference in the sample mean swim times will be calculated. Which of the following is the appropriate inference procedure for analyzing the results?
A. A two-sample t-interval for a difference between sample means
B. A two-sample t-interval for a difference between population means
C. A one-sample t-interval for a sample mean
D. A one-sample t-interval for a population mean
E. A matched pairs t-interval for a mean difference
Answer:
B. A two-sample t-interval for a difference between population means
Step-by-step explanation:
in the given situation we are comparing the groups that are independent also we test the difference of the population mean so here consider inference procedure for analyzing the results is that there should be two sample t -interval by taking a difference between the population means
hence, the correct option is B.
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
The parallelogram whose diagonals are equal in length and not perpendicular is
called
(a) square
(b) rectangle.
(d) straight.
(c) rhombus.
(d) trapezium
Answer:
Rectangle.
Step-by-step explanation:
If the diagonals are equal then the parallelogram is a rectangle. They are also equal in length in a square, which can be regarded as a special type of rectangle - but in this case the diagonals are perpendicular. They are also perpendicular in a rhombus.
By the literal surface of the triangular prism 90 in2 110 in2 120 in2 130 in2
Plzzz hurry will mark brainlist
Answer:
3
Step-by-step explanation:
Your answer is 3
Answer:
i think its 120
Step-by-step explanation: thats what im going to put
Stuffed animals at a toy
store are split among 4
shelves. There are 12
stuffed animals on each
shelf. How many stuffed
animals are at the store?
Answer:
48
Step-by-step explanation:
12 x 4 = 48
Answer:
48
Step-by-step explanation:
If there are 4 shelves with 12 on each you multiply 4 by 12 (4*12) which gives you 48
Solve for x. Round your answer to the nearest tenth
Answer:
x = 17.2
Step-by-step explanation:
cos 35 = x/21
0.8192 = x/21
x = 17.2
the ratio of boys to girls is 15:11 .if boys are 435 find the number of girls
Answer:
319
Step-by-step explanation:
15÷11 = 1.36364
435÷1.36364 = amount of girls
which will be 319
Find two numbers the quotient is between. Then estimate the quotient.
250 ÷ 4
Multiply 4 by multiples of 10 to estimate the quotient. The quotient is between
and
.
The estimate for the quotient is
.
Answer: 250
Step-by-step explanation: 250 divided by 4 multiply 4 equals 250
Write an algebraic expression for each:
the sum of a number and 45
12 more than a number
the difference of 1 and a number
13 subtracted from a number
Answer:
X + 45
X + 12
1 - x
X - 13
Step-by-step explanation:
Using the keywords sum of, more than, and subtracted will help you. (You can also flip the expression since it didn't say how.
What is the measure of AEB?
Can y’all help me please
Letters A through F
Please:((
Answer:
can you take another photo
Step-by-step explanation:
need help on geometry question :)
Answer:
the answer is 9√3
sin60°= p/h
√3/2 = x/18
by cross multiplication we get
18√3=2x
therefore: x=9√3
Answer:
I think it's 12√3
I don't know if I'm correct
Find the surface area of the prism
Answer:
dont you just add the numbers...?
Which of the following is the correct factorization of the polynomial 4x2 - 11x +7?
A)
(4x - 1)(x - 7)
B)
(4x - 7)(x - 1)
C)
(4x - 7)(x + 1)
D)
(4x + 1)(x - 7)
1. Plot the following points on the same coordinate system.
(a) A(2,2)
(b) B(-1,2)
(c) C(-3,-1)
(d) D(2, -3)
Which point is closest to the y-axis?
(10, 15)
(5, 12)
(9, 11)
(-4, 14)
Eric had 4/7 of a spool of yarn. He used 3/7 of his yarn for a project. What fraction of the spool was used for the project? Write your answer in simplest form.
Answer:
= 1/7 or 0.(142857) in decimal
Step-by-step explanation:
(4/7) - (3/7)
= 1/7
Which table of values is defined by the function y = 5x + 4?
Answer:
Graph using a table of values.
x y
-2 -6
-1 -1
0 4
1 9
2 14
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hey niy
True or false. Explain.
The volumes of a rectangular-based pyramid and a triangular-based pyramid with congruent heights and equal base areas are equal
Answer:
true
Step-by-step explanation:
PLS HELP ME YOU DON'T HAVE YO SHOW UR WORK
Answer:
b.
-2/3
Step-by-step explanation:
2/3 + (-2/3)
2+-2/3
0
hope this helps :)
2. It takes the 1st hose 3.25 hours to fill the empty tank
by itself while both hoses can fill it in 1.25 hours. How
long will it take the 2nd hose to fill the empty tank by
itself?
Answer::
Step-by-step explanation:
Cora gave her a $4.40 tip. The tip was 20% of the cost of the haircut. Write an equation to find b, the cost of the haircut .
Answer:
3.52
Step-by-step explanation:
do 4.40*.20. youll get .88, then subtract .88 from 4.40. pls give brainliest
