Answer:
30
Step-by-step explanation:
2x+5x= 105
7x= 105
x= 105/7
x= 15
First part= 2x= 2(15)= 30
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
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:
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.
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.
5,977,243 x 457,766 pls answer
Answer:
a number
Step-by-step explanation:
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
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.
a square has been cut out of the shaded rectangle. calculate the area of the shaded part of the rectangle
Answer:
u got zoom class in session ??
Step-by-step explanation:
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
Find the value of a and b.
B
85
6
F
с
a
E
a
b=
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.
The graph of f(x) = x^2 has been shifted into the form f(x) = (x − h)2 + k:
What is the value of h?
1
-1
-3
3
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:
Write an equation of the line passing through point P(-8, 0) that is perpendicular to the line 3x - 5y = 6.
y =
Answer:
y = -5/3x - 6/5
Step-by-step explanation:
Brainliest pls
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!
What is the approximate area of the circle shown below ? 17cm
Answer:
It's B, 908cm^2
Step-by-step explanation:
A=3.14xr^2.
Answer:
The answer is B, 908cm²
Step-by-step explanation:
Just Completed This quiz
Hi
Can you answer these questions
Either you answer all or just one it’s ok
Thx
Answer:
I'm sorry if you can't read it. I hope I could still help.
Step-by-step explanation:
Find the midpoint of each line segment.
Answer:
It would be 7.07 approximately.
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.
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
Find the slope of the line that passes through the points (4, 3) and
(2, 7).
Answer:
-2
Step-by-step explanation:
7-3/2-4=-2
use slope formula
The equation of line passes through the points (4, 3) and (2, 7) will be;
⇒ y = - 2x + 11
What is Equation of line?
The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
Two points on the line are (4, 3) and (2, 7)
Now,
Since, The equation of line passes through the points (4, 3) and (2, 7)
So, We need to find the slope of the line.
Hence, Slope of the line is,
m = (y₂ - y₁) / (x₂ - x₁)
m = (7 - 3) / (2 - 4)
m = 4 / -2
m = - 2
Thus, The equation of line with slope - 2 is,
⇒ y - 3 = - 2 (x - 4)
⇒ y - 3 = - 2x + 8
⇒ y = - 2x + 11
Therefore, The equation of line passes through the points (4, 3) and
(2, 7) will be;
⇒ y = - 2x + 11
Learn more about the equation of line visit:
https://brainly.com/question/18831322
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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:
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
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.
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
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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
slope=-2 y intercept=0
Answer:
Step-by-step explanation:
I am assuming you want an equation
y=mx + b
m is the slope, and b is the y intercept, so just fill in the info
y=-2x + 0
because it is just + 0, you can simply write:
y=-2x
Note: I'm not completely sure of what you're asking, but I hope this helps in some way, shape, or form!! If not, feel free to tell me what you need, and I will edit my response.
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