Consider matrix A.
What matrix results from the elementary row operations represented by -2R2 + 3Rı?
Enter your answer by filling in the boxes.
I misread the question. Had the elementary row operations been represented by -3R2 + 4R1, then the answer would have been,
-36 23 -1
8 -1 3
hopefully this will still help some of you
Which property of real numbers is shown bellow sqrt 6x +0 = sqrt 6x x is a real number
A. Identity property of multiplication B.commutative property of addition
C. Distributive property
D. Identity property of addition
Answer:
Option: D
Step-by-step explanation:
Took the Test
Add the following rational number.
-2/3+5/6
Answer:
1/6
Step-by-step explanation:
-2/3 = -4/6
so, -4/6 + 5/6 = 1/6
An airline tracks the time an airplane is parked unloading and loading passengers. The line plot displays the amount of time a number of airplanes were parked on one day. If the total amount of time were divided equally among all the airplanes, how long would each airplane have been parked? Amount of Time Planes are Parked A. B. C. D.
Answer:
It was A 4/7
Step-by-step explanation:
Evaluate 4(3-1)² i need help with this
Answer:
16
Step-by-step explanation:
You can use PEMDAS to answer this question.
So first you would do whats inside the parenthesis.
4(3-1)².
3-1 is 2 so 2 would be in the parenthesis. Next you have to do exponets.
4(2)².
2² is 4. So now you just have a multiplication problem left.
4(4) which is 16.
Alyssa can do a job in 16
minutes. Adrian will do the
same work in 8 minutes. How
many minutes would it take
Alyssa and Adrian to do the
same job together?
Answer:
i think it would take them 8 minutes depending on how well they get along.
Meghan has her own business. When she makes money, it is called income. When she spends money, it is called expenses. Choose the phrases below to explain how to use positive or negative integers to represent income and expenses. You would use positive integers to represent income because it is a Choose... amount. You would use negative integers to represent expenses because they are opposites of income.
Answer and explanation:
When you use positive interger to represent income, it shows that there has been an addition instead of a subtraction in money value to the business. In other words money is coming in instead of going out. Example when there is profit on goods sold say $10, it is indicated with a positive integer 10 to indicate addition in terms of operating income
When you use a negative value to represent expense, it indicates there has been a subtraction instead of an addition in money value. In other words money is going out of the business and not coming in. Example when there is a transportation expense to convey goods to the buyer, it is recorded as expenses subtracted from say revenue sales of the business. expenses are usually indicated in brackets in accounting to show negative value, although not a requirement since they are already named and recognized as expenses and subtracted regardless
EMERGENCY! Please give me the correct answer!
Answer:
The Value of the reciprocal. The top one.
Step-by-step explanation:
As you notice the number Doubles everytime making it 2x more every time.
The graph shows how the mass of copper
changes as the volume of the element changes
and the density remains constant.
*picture*
Which of these bests represents the rate of the
change in the mass of copper with respect to the
volume?
a.4/33 g/cm^3
b.19/41 g/cm^3
c.8 1/4 g/cm^3
d.4 4/7 g/cm^3
Answer: 8 1/4g/cm³
Step-by-step explanation:
Given the graph :
The rate of change in the mass of copper with respect to volume :
To obtain this, we find the slope or gradient of the graph:
Gradient = Δy / Δx = (y2 - y1) / (x2 - x1)
Drawing a right angled triangle on the anybpart of the line of best fit:
y2 = 40 ; x2 = 4.75 ; y1 = 16 ; x1 = 2
(y2 - y1) / (x2 - x1)
= (40 -16) / (4.75 - 2)
= 24 / 2.75
= 2400/275
= 8.727 g/cm^3
Due to unit and graph scale,, the slope is closest to 8 1/4g/cm³
Answer:
c
Step-by-step explanation:
the slope of (19,-16) (-7,-15)
Answer:
Slope is y= -1/26x-15.25
Step-by-step explanation:
Put the two points on a graph, and count the rise over run, which is rise=-1, and run=26. Then you just find the y-intercept, and you have your equation.
I need help with the fraction thing I’m doing
Answer:
12
/ \
2 6
/ \
2 3
Step-by-step explanation:
This is the answer
Answer:
12
2 6
2 3
Step-by-step explanation:
Because reasons.
1 week away from the election. Who do you think wins? Why do you think so? Who do you want to win? Who is better for the country? Why??? (Trump 2020)
Answer:
I think that Trump will win because 4 years ago no one thought he was going to but he did anyway
I want none of them to win because I dislike both of them.
7th grade math , Help on every single problem. I’ll give brainliest
Answer:
grab ur calculator for these. when dividing, they will end up in decimal format. for it to be a precentage, take that number and multiply by 100 to get a percent.
To convert back to fractions, divide the number by 100
eg 7%
7/100
that's the fraction. (decimals is just the full dividing)
Now answers,
1.30 2.52 3.85 4.8 5.80 6.1 7.63 8.10 9.0.15 10.0.48 11.0.6 12.0.5 13.37/50 14.9/25 15.7/10 16.9/100 17.0.46 18.0.05 19.0.2 20.0.02 21.9/10 22.1/4 23.7/100 24.47/100
I can't garantee that i fully simplified everything, just do a double check
Morgan can type 18 words
per minute. How long will it
take her to type 3
paragraphs? (Each
paragraph has 30 words)
Answer: it will take 5 minutes.
Write the equation of the parabola in vertex form.
vertex (3,3), point (1, -9)
f(x) =
Can someone help me ASAP??
Answer: -9 = a(1 - 3)² + 3
Step-by-step explanation:
Vertex Form Equation:
y = a(x - h)² + k
vertex: (h, k) which means
h = 3
k = 3
because your vertex is (3, 3).
Your point is (1, -9) which is (x, y).
This means
x = 1
y = -9
Now, plug everything into your Vertex Form Equation:
-9 = a(1 - 3)² + 3
That’s your equation and final answer, but of course, if you need to, you can solve for a if you need to.
If a is positive, the parabola opens up. If a is negative, the parabola opens down.
Hope this helps!
In the diagram, m_ECA = 120.
m.BCD =
Select the scenario that is classified as a permutation without repetition
A : a teacher choosing students for classroom jobs like line leader
B: a math test with multiple choice questions
C: drawing a single card from a deck
D: runners finishing the Boston marathon
Answer:
A
Step-by-step explanation:
ANSWER QUICK
PLEASE GIVE A CORRECT ANSWER THO
Answer:
c?
Step-by-step explanation:
Answer: that is a function beause it passes the vertical line test.
Step-by-step explanation: pls mark brainiest thankss
Someone please help with this !!!!
Answer:
x = 132
Step-by-step explanation:
The 2 angles shown are alternate exterior angles and are congruent, thus
x = 132
Question 3 (20 points)
Factor:
36x2 - 81y2
(6x + 9y)(6x + gy)
(9x - 9y)(4x + 9y)
(6x - 9y)(6x - 9y)
(6x - 9y)(6x + 9y)
The factors of the expression 36x² - 81y² will be (6x - 9y) and (6x + 9y). Then the correct option is D.
What is factorization?It is a method for dividing a polynomial into pieces that will be multiplied together. At this moment, the polynomial's value will be zero.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The expression is given below.
⇒ 36x² - 81y²
Factorize the expression, then we have
⇒ 36x² - 81y²
⇒ (6x)² - (9y)²
⇒ (6x - 9y)(6x + 9y)
The factors of the expression 36x² - 81y² will be (6x - 9y) and (6x + 9y). Then the correct option is D.
More about the factorization link is given below.
https://brainly.com/question/6810544
#SPJ2
John hosts an art workshop on the weekends. He has an average of 14 students in each session and charges a fee of $12 per session. He estimates that for every $2 increase in the fee, the average number of students reduces by 1.
Complete the equation that models this scenario, where c(x) is the revenue generated and x is the number of $2 fee increases.
Answer: c(x)=-2 x2 + 16x + 168
Step-by-step explanation: I hope this helps if im wrong im srry!
Answer:
[tex]c(x) = - 1(x - 7.5)^{2} + 222.25[/tex]
I apologize if this is the wrong format. It's also extremely complicated to explain.
Solve this problem. 98-5^2-35= *
someone help plz
Answer:
28
Step-by-step explanation:
used a calculator
If l is parallel to m, find the value of each missing variable.
Answer:
x = 26; l = 137; m = 137
Step-by-step explanation:
If the lines are parallel, that means the measurements are too. As such, equal the two expressions together
5x + 7 = 8x - 71
add 71 to both sides
5x + 7 + 71 = 8x - 71 + 71
-71 and +71 cancel each other out
5x + 78 = 8x
subtract 5x from both sides
5x - 5x + 78 = 8x - 5x
5x - 5x cancels each other out
78 = 3x
divide both sides by 3
3x ÷ 3 = 1x which can also be written as just x
78 ÷ 3 = x
26 = x
plug in this x value into both expressions to find variables l and m
l:
5(26) + 7
130 + 7
137
m:
8(26) - 71
208 - 71
137
can somebody help me with this problem!? i need help ahh
for these kinds of problems the outside angle always equals the opposite 2. meaning angle x=64+70 which is 134 degrees. you can double check this because all triangles equal 180 degrees. meaning that the last angle in the triangle is 46. 46+70+64=180.
so your answer is 134.
hope this helps :)
Answer:
134 Degrees.
Step-by-step explanation:
Lets figure out the third angle (y) in the triangle first.
70 + 64 + y = 180
134 + y = 180
y = 46
We now know that 46 is our third angle. Therefore, we can subtract 46 (y) from 180 (the total between x and the third angle) to get our final answer. 134 Degrees.
5,977,243 x 457,766 pls answer
Answer:
a number
Step-by-step explanation:
Find the slope between the given points. REMEMBER: Slopes must be simplified.
(8,3) and (-5,3)
Answer:
Slope = 0
Step-by-step explanation:
Slope = 0/-13 = 0
Factorise (2x+3y)²-(x-4y)²
Answer:
(3x−y)(x+7y)
Step-by-step explanation:
Factor (2x+3y)^2−(x−4y)^2
3x^2+20xy−7y^2
=(3x−y)(x+7y)
Answer:
(3x - y)(x + 7y)
Step-by-step explanation:
Given
(2x + 3y)² - (x - 4y)² ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b)
Here a = 2x + 3y and b = x - 4y , then
(2x + 3y + x - 4y)(2x + 3y - (x - 4y))
= (3x - y)(2x + 3y - x + 4y) = (3x - y)(x + 7y)
Thus
(2x + 3y)² - (x - 4y)² = (3x - y)(x + 7y) ← in factored form
Find the midpoint of each line segment.
Answer:
It would be 7.07 approximately.
Mike, Larry, and Daryl are brothers that own a shoe store. For every pair of shoes sold, they earn $18.00 in profits. At the end of the day, they split the profits equally among them. Which of the following equations can be used to find P, the profit each brother earns if n pairs of shoes are sold in one day?
Answer:
The answer is $18n/3= p
A number whose value is less than 0
__________________________
Answer: a negative
Step-by-step explanation:
Positive numbers are numbers from 0 and up negative numbers are numbers with a subtraction sign infront of them like -2 or -6
Answer:
A negative
Step-by-step explanation:
Any number below 0
Ex: -1,-2,-3,-4, etc...