Answer: Theorem 4 says that the columns of B do NOT span R4. Further, using Theorem 4, since 4(c) is false, 4(a) is false as well, so Bx = y does not have a solution for each y in R4.
Step-by-step explanation:
Yes, the column b span r4. Yes, the equation has a solution for each y in r4.
Matrix is defined as a set of numbers consisting of rows and columns elements.
It consists of rows and columns.
The dimensions of the matrix are determined by m×n.
Given matrix,
[tex]\begin{bmatrix} &1 &3 &-2 &2\\ &0 &1 &1 &-5\\ &1 &2 &-3 &7\\ &-2 &-8 &2 &-1\\\end{bmatrix}[/tex]
R3 → R1
R3→R4+2R1
[tex]\begin{bmatrix} &1 &3 &-2 &2 \\ &0 &1 &1 &-5 \\ &0 &-1 &1 &5 \\ &0 &-2 &-2 &3\\\end{bmatrix}[/tex]
R3→R3+R2
R4→R4+2R2
[tex]\begin{bmatrix} &1 &3 &-2 &2 \\ &0 &1 &1 &-5 \\ &0 &-0 &2 &0 \\ &0 &-0 &0 &7\\\end{bmatrix}[/tex]
This is the row echelon form of B. It has four independent columns and the dimension of r4 is 4.
column of B spans r4.
Row of matrix = 4
No of columns of matrix = No of rows of the matrix.
and the columns of B span r4.
thus we can conclude that the columns of b span r4 and the equation
bx =d y have a solution for each y in r4.
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Simplify each expression.
8. (-3)+4
8. (-3)+4
= -24 +4
= -20
What is algebric equation?In algebraic equation or polynomial equation is an equation of the frame P=0 where P could be a polynomial with coefficients in a few field, regularly the field of the rational numbers.
algebraic equation, statement of the equality of two expressions defined by applying to a set of factors the algebraic operations, namely, expansion, subtraction, increase, division, raising to a control, and extraction of a root.
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Isabel is on a ride at an amusement park that slides the rider to the right, and then rotates counterclockwise about its own center 60° every 2 seconds. How many seconds pass before Isabel completes one full rotation?
Isabel to complete one full rotation is 12 seconds.
In statistics, what does a probability mean?
The probability serves as a gauge for how likely an event is to occur. It gauges how likely an event is. P(E) = Number of Favorable Outcomes/Number of Total Outcomes is the formula for probability.P ( E ) = Number of favourable outcome Total number of outcomes. Hence, the probability is the possibility of the occurrence of a random event.In every 2 seconds the ride rotates 60º.
So, it takes 6 turns to rotate 6 × 60º or 360º.
Therefore, the time it takes
Isabel to complete one full rotation is 12 seconds.
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Rita had a 28-mile head start.
Roger had a 26-mile head start.
Roger had a 25-mile head start.
Rita had a 22-mile head start.
Rita has a head start, has she began her race 28 Mile ahead of the starting point.
How to illustrate the information?Since they moved at a constant speed, then there speed is the same through out the journey.
Speed is given by the slope:
(y2 - y1) / (x2 - x1) = (130 - 65) / (2 - 1) = 65 / 1 = 65 mph
Roger's starting position, when t = 0
t = 1 ; distance = 65 miles
t = 0 ; 65 - speed per hour = 65
At t = 0 ; 65 - 65 = 0 miles
Hence, Roger does not have a head start.
For Rita :
Speed is also constant :
Speed or rate = slope of the graph :
(y2 - y1) / (x2 - x1) = (158 - 93) / (2 - 1) = 65 / 1 = 65 mph
Rita's starting position, when t = 0
t = 1 ; distance = 93 miles
t = 0 ; 93 - speed per hour
At t = 0 ; 93 - 65 = 28 miles
Hence, Rita has a head start of 28 miles.
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Work out the area of a rectangle with base,
b
= 38mm and perimeter,
P
= 78mm.
Answer: 38
Step-by-step explanation: In order to find the area you need to figure out all your sides. Now thankfully it's just a rectangle or this would be a bit more complicated haha!
The first step is to understand what all the sides are. Since you know you have a perimeter of 78 and base of 38, all you need to do is add 38 +38. The reason is that that's on both long sides of a rectangle. This now leaves you with a number of 76.
Second step: Take the number 76 and subtract it your perimeter 78. This obviously leaves you with the number 2, which you'll have 1 on the shorter sides.
Therefore Area: 38 x 1 = 38
Hope it helps
17.- En una caja hay 5 canicas azules 3 canicas rojas y 2 canicas verdes
¿Cuál es la probabilidad de sacar una canica roja?
Answer:
La probabilidad de sacar una canica roja seria 3/10 porque hay 10 canicas en total, 3 de ellas son rojas. Tambien se puede escribir 0.3 . Espero que esto te ayude.
Which relation is function?
There are 4 graph in the given picture. The 4th graph is the function other 1st, 2nd and 3rd graph are not a function.
Given that,
There are 4 graph in the given picture.
We have to find the graph is function or not.
We have to perform the vertical line test.
Use the vertical line test to determine whether a graph accurately represents a function. If a vertical line is moved across it and only ever touches it at one point, the graph is said to be a function. The graph is not a function if the vertical line traverses it more than once.
We have to draw the vertical lines on a graph if the vertical line touches the graph more then 1 then it is not a function if it touches 1 time then it is a function.
1st graph is not a function.
2nd graph is not a function.
3rd graph is not a function.
4th graph is a function.
Therefore, the 4th graph is the function other 1st, 2nd and 3rd graph are not a function.
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A. Solves each equation by extracting square root.
1.) x² = 16
2.) x² = 49
3.) x² = 128
4.) x² = 108
5.) x² = 121
6.) x²-169 = 0
7.) x²-80=0
8.) x²-63=0
9.) 5x2 – 125 = 0
10.) 3x²-132-0
can you answer this please
i need help pleaseee
Answer:
UT=27
ST=18
RV=15
US=15
Step-by-step explanation:
If the entirety of RT is 30, then you'd divide that by 2 to receive the number for both RV and VT. 30 divided by 2 is 15.
Because RVS and UVT are vertical, they are both 27. Similarly, RVU and SVT are vertical to each other, so SVT is the same as RVU which is 18.
Hope this helps.
Determine whether each set of numbers can be the measure of the sides of a triangle. If so, classify the triangle as acute, right, or obtuse. Justify your answer.
b. 2 √3, 4√2, 3 √5
The following set of numbers 2√3, 4√2, and 3√5, can be the measures of the sides of an obtuse triangle.
A triangle is a polygon with three sides and three vertices.
To know if a set of number is a valid measure of the sides of a triangle, it must follow the Triangle Inequality Theorem which states that the sum of any two sides must be greater than the third side, such that a + b > c, a + c > b, and b + c > a.
let a = 2√3, b = 4√2, and c = 3√5
a + b > c 2√3 + 4√2 > 3√5 9.12 > 6.71 True
a + c > b 2√3 + 3√5 > 4√2 10.17 > 5.66 True
b + c > a 4√2 + 3√5 > 2√3 12.37 > 3.46 True
To know what type of triangle based on the length of its side:
1. Take the sum of the squares of the two smaller sides.
(2√3)^2 + (4√2)^2 = 44
2. Compare it to the square of the largest side.
(3√5)^2 = 45
44 < 45
If the sum of the squares of the 2 is larger than the square of the 3rd, it is an acute triangle.
if they are equal, it is a right triangle
if they are smaller, then it is an obtuse triangle.
Hence, 2√3, 4√2, and 3√5 can be the measure of the sides of an obtuse triangle.
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Please resolve it and list the steps the simplest way possible, thanks. ASAP if possible
Step-by-step explanation:
Looks like it's a piecewise defined function. Where you see a circle, means it's not inclusive so at f(1) it should be define at y=3
4. Drew is going to try out for the basketball team, so he decides to shoot free throws every day at the park. On the first day, he shoots 15 free throws. On the second day, he shoots 25 free throws. On the third day, he shoots 35 free throws, Drew continues to increase the number of free throws he shoots each day by the same amount. a) If Drew continues to follow this pattern, how many free throws will Drew shoot on the 20th day? b) What is the total number of free throws Drew shot during those 20 days?
Answer:
He shot a total of 2,415 free throws. He shot 255 on the 20th day.
Step-by-step explanation:
a truck can be rented from Company A for $110 a day plus $0.30 per mile, Company B charges $50 a day plus $0.40 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for Company A and Company B are the same.
Answer:
600 miles
Step-by-step explanation:
Plug 110+0.30x and 50+0.40x into a graphing calculator and see where they intersect
Write the equation of the line in slope-intercept form.
(x/6) - (5/12)y = 5/8
The equation of the line in slope-intercept form is y = (2/5)x + (-3/2) .
The equation of a line in slope-intercept form can be written as follows,
y = mx + c equation 1
m in the above equation represents slope of the line and c represents the intercept.
The given equation is (x/6) - (5/12)y = 5/8 .
To get the equation of the line in slope-intercept form we need to convert the given equation in the format of equation of a straight line i.e., equation1. So, now we will rearrange the given equation as
(x/6) - (5/12)y = 5/8
On multiplying both sides of above equation by (12/5), we will get
(2/5)x - y = 3/2
⇒ y = (2/5)x + (-3/2) equation 2
On equating equation 1 and equation 2, we will get
Slope of the line = m = 2/5
Intercept = c = -3/2
The equation of the line in slope-intercept form is y = (2/5)x + (-3/2) .
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the andersons can set up 6 tables in 1 hour how many tables can they set up in 5 hours
They can set up total 30 tables in 5 hours.
How is a multiplication explained?Multiply in mathematics refers to the continual addition of sets of same size.
2 × 3 = 6
It can be interpreted this way:
Three times two equals six.
Three times two equals six.
Six is two threes.
Given,
Andersons can set up 6 tables in 1 hour
Tables they can set up in 5 hours = 5 × 6
= 30
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Divide the quantity 3.185 times ten raised to the seventeenth power end quantity divided by the quantity 9.1 times ten raised to the eighth power end quantity.. write the final answer in scientific notation. 3.5 x 108 0.35 x 109 3.5 x 109 0.35 x 1025
On dividing 3.185 × [tex]10^{17}[/tex] by 9.1 × [tex]10^{8}[/tex] the final answer in scientific notation is 3.5 ×[tex]10^{8}[/tex] .
The quantity 3.185 times ten raised to the seventeenth power can written as 3.185 × [tex]10^{17}[/tex] .
The quantity 9.1 times ten raised to the eighth power can written as 9.1 × [tex]10^{8}[/tex] .
On dividing 3.185 × [tex]10^{17}[/tex] by 9.1 × [tex]10^{8}[/tex] ,
( 3.185 × [tex]10^{17}[/tex] )/( 9.1 × [tex]10^{8}[/tex] ) = 0.35 × [tex]10^{17-8}[/tex] = 0.35 ×[tex]10^{9}[/tex] = 3.5 ×[tex]10^{8}[/tex] (in scientific notation)
Scientific notation is a floating-point system in which the numbers are expressed as the products consisting of a number between one to ten multiplied by an appropriate power of ten.
On dividing 3.185 × [tex]10^{17}[/tex] by 9.1 × [tex]10^{8}[/tex] the final answer in scientific notation is 3.5 ×[tex]10^{8}[/tex] .
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what is y if 3y+20=5y-16
Answer:
y is equal to 18
Step-by-step explanation:
[tex]3y+20-20=5y-16-20\\3y=5y-36\\3y-5y=5y-36-5y\\-2y=-36\\\frac{-2(y)}{-2}=\frac{-36}{-2}\\(\frac{-a}{-b} = \frac{a}{yb}) =\frac{2y}{2}\\\frac{2(y)}{2}=y\\=\frac{36}{2}\\=18\\y = 18[/tex]
I've been trying to figure this out for a while now, can I get some help? -53<9x+1<-26
Answer:
- 9 < x < - 3
Step-by-step explanation:
- 53 < 9x + 1 < - 26 ( subtract 1 from each interval )
- 54 < 9x < - 27 ( divide each interval by 9 )
- 6 < x < - 3
Determine whether the given function is linear. f(x) = 3 + 1/3x
you can either graph this or plug in values.
[tex]f(x)=3+\frac{1}{3}x[/tex]
[tex]f(-1)=3+\frac{1}{3}(-1)\\\\f(-1)=3-\frac{1}{3}\\\\f(-1)=2\ \frac{2}{3}\\\\f(0)=3\\\\f(1)=3\ \frac{1}{3}[/tex]
[tex]\therefore[/tex] we can conclude that this function is linear.
Also here is a graph
Find the value of each variable (3x+31)° (2x-6)°
Answer:
x = 31°Step-by-step explanation:
Angle (3x+31)° and angle (2x-6)° are supplementary angles
(3x + 31)° + (2x - 6)° = 180°
5x + 25° = 180°
5x = 155°
x = 31°
-----------------
check
3 * 31 + 31 + 2 * 31 - 6 = 180
180 = 180 (remember PEMDAS)
the answer is good
In the expression 38+27 y , which number is a coefficient?
27 is the number that is a coefficient.
An expression in math is a sentence with a minimum of two numbers/variables and at least one math operation in it.
A coefficient is a number or an alphabet that is multiplied by a variable of a single term or the terms of a polynomial. For example, in the term 7x, 7 is the coefficient. The coefficient of x in the term 3xy is 3y.
The variable is a symbol for a value we don't know yet. It is usually a letter like x or y.
In Algebra, a constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.
In the expression 38 + 27y the coefficient of y is 27, 38 is the constant and y is the variable.
we can identify a coefficient since it is always associated with a variable.
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7
2-2
3-3
Question 6(Multiple Choice Worth 1 points)
(02.05 MC)
If the parent function f(x) = |x| is transformed to g(x) = |x - 3|, what transformation occurs from f(x) to g(x)?
The graph of f(x) is shifted upward to create g(x).
The graph of f(x) is shifted downward to create g(x).
The graph of f(x) is shifted to the right to create g(x).
The graph of f(x) is shifted to the left to create g(x).
Question 7(Multiple Choice Worth 1 points)
(02.05 MC)
Set
Answer: The graph of f(x) is shifted to the right to create g(x).
Step-by-step explanation:
g(x) is the graph of f(x) shifted right 3 units.
Question below, only answer if you know
Answer:
1. translate
2.rotate
explanation:
first, translate a to the next quadrant.
second, rotate it 180 degrees.
Answer:
Figure A translated 2 figures down and mirrored to the right.
Figure A then rotated 180 degrees.
[tex]\frac{1}{4} + \frac{-3}{4}[/tex]
Answer:
-1/2
[tex] - \frac{1 }{2} [/tex]
First the two fours cancel out so it's becomes
[tex] \frac{1 - 3}{4} [/tex]
then subtract
[tex] \frac{ - 2}{4} [/tex]
simplify
[tex] \frac{ - 1}{2} [/tex]
Draw a right triangle with side lengths that form a Pythagorean triple. If you double the length of each side, is the resulting triangle acute, right, or obtuse? if you halve the length of each side? Explain.
If you double or halve the length of each of Pythagorean triplet the resulting triangle will always be Right Triangle.
Pythagoras Theorem states that the sum square of two sides of triangle is equal to the square of longest side.
Let us take Pythagorean triplet as (6,8,10).
where base=6
perpendicular = 8
hypotenuse = 10
Part(a)
Let us double the length of each value
base = 12
perpendicular = 16
hypotenuse = 20
By Pythagoras Theorem
[tex]base^{2} +perpendicular^{2} =hypotenuse^{2}[/tex]
[tex]12^{2} +16^{2} =20^{2} \\ \\ 144+256=400\\ \\ 400=400[/tex]
Therefore the Triangle will be a Right Triangle as Pythagoras Theorem is satisfied.
Part (b)
Let us halve the length of each value
base=3
perpendicular = 4
hypotenuse = 5
By Pythagoras Theorem
[tex]base^{2} +perpendicular^{2} =hypotenuse^{2}\\\\3^{2} +4^{2} =5^{2}[/tex]
[tex]9+16=25\\ \\ 25=25[/tex]
Therefore the Triangle will be a Right Triangle as Pythagoras Theorem is satisfied.
Therefore , If you double or halve the length of each of Pythagorean triplet the resulting triangle will always be Right Triangle.
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If x = −4 and y = −5, what is the value of 5x + 3y + 14? A. −49
B. −21 C.41 D. 49
Answer:
the value it's -21
Step-by-step explanation:
5×(-4)+3×(-5)+14=
-20 + (-15) + 14=
-20 -15 + 14=
-35 + 14=
-21.
Mr.Rogers opened a savings account with an initial deposit of $4,000 and will not make any additional deposits or withdrawals. The account earns a 2% simple interest. What is the total amount that Mr.Rogers will have in his account at the end of 3 years?
Answer:
£4240
Step-by-step explanation:
2%of 4000=80
80x3=240
4000+240=4240
A negative sign indicates the ______ of the number?
Answer:
opposite
Step-by-step explanation:
A 3-gallon bottle of fabric softener costs $40.32. What is the price per pint?
Use each recursive definition to write an explicit formula for the sequence. a₁ = 10, an =2 a n ₋ ₁
The explicit formula is [tex]a_n = 2^{n-1}.10[/tex]
What is a sequence ?A sequence can be taken as the set of numbers having a particular order for all the terms or we can say that arrangement of numbers in some order is known as sequence. There are many types of sequences such as recursive sequences, arithmetic sequences, special sequences, quadratic sequences, geometric sequences etc.
Some examples for sequence are :
2,4,6,8,10,12
3,9,27,81,243
What is recursive sequence ?The recursive sequence is the sequence in which any term in the sequence can be find with the help of previous term of that sequence.
In a sequence , first term always known as initial term.
and difference between two terms are known as common difference. It is denoted by d.
General form of sequence is :
[tex]a_1,a_2,a_3,----,a_n[/tex]
where , [tex]a_n[/tex] = last term in sequence.
According to question,
[tex]a_1 = 10[/tex] and [tex]a_n=2a_{n-1}[/tex]
first find the sequence ,
[tex]a_2= 2 a_{2-1} = 2 a_1 = 2(10) = 20\\\\a_3= 2 a_{3-1} = 2 a_2= 2(20) = 40\\\\a_4= 2 a_{4-1} = 2 a_3= 2(40) = 80[/tex]
Thus sequence is 10,20,40,80,...
and the explicit formula for sequence is :
[tex]a_n = 2a_{n-1}\\= > a_n = 2(2a_{n-2}) = 2^2 a_{n-2}\\= > a_n = 2^2 (2a_{n-3}) = 2^3 a_{n-3}\\ .\\.\\= > a_n = 2^{n-1} a_{n-(n-1)} \\ = > a_n = 2^{n-1} .a_1 = 2^{n-1}.10[/tex]
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f(x) = -5x − 3 and g(x) = 6x - 2. Find f g and its domain.
The domain is f[tex]o[/tex]g(x)= -30x+7
The domain is all the real numbers.
Given that f(x)=-5x-3 and g(x)=6x-2.
f[tex]o[/tex]g=f(g(x))
=f(6x-2)-3
=-5(6x-2)-3
=-30x+10-3
f[tex]o[/tex]g =-30x+7
The domain is all the real numbers.
What is domain?
Specific to the internet, the term domain can refer to how the internet is structured, and domain also refers to how an organization's network resources are organized. In general, a domain is an area of control or a sphere of knowledge.
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