Answers
Hope this helps!
Can u plz mark me as brainliest? I really need it!
Related Questions
If the difference of two numbers is 7 and their product is 60, what are they?
Answers
x * y = 60
y(y + 7) = 60
y^2 + 7y = 60
y^2 + 7y - 60 = 0
(y + 12)(y - 5) = 0
y + 12 = 0
y = -12....not this one because it is negative
y - 5 = 0
y = 5 <===
x - y = 7
x - 5 = 7
x = 7 + 5
x = 12 <==
so ur 2 numbers are 12 and 5
What does it mean if the determinant of a matrix is 0?
Answers
In linear algebra (university level course), having a determinant of 0 would mean a lot more.
Have an awesome day! :)
Final answer:
The determinant of a matrix is 0 means the matrix is singular, indicating no unique solution for the corresponding system of equations, or in geometry, that space is compressed to a lower dimension.
Explanation:
When the determinant of a matrix is 0, it signals that the matrix does not have an inverse and is considered singular. In practical terms, this means that the system of equations that corresponds to the matrix does not have a unique solution. For instance, in a square matrix, if the determinant is zero, it may indicate that the rows or columns are linearly dependent, meaning that at least one row or column is a scalar multiple of another, resulting in redundant information. In geometry, if we're dealing with transformation matrices, a determinant of zero implies that the transformation compresses the space into a lower dimension, effectively 'flattening' it, and thus, the original geometrical figure loses its volume.
A graphic designer charges an hourly rate. In July, the only expense is for advertising. The function graphed models the designer's net income, y, for July for x hours of work.
Select True or False to describe each statement.
The x-intercept represents the amount the designer charges for 1 h of work.
The difference between 0 and the y-intercept represents the amount the designer spent on advertising.
The slope represents the designer's hourly rate.
Answers
The x-intercept is the value of x when y is zero, thus from the graph, the x-intercept represents the number of hours he has to work to cover for his expenses.
Therefore, the statement "The x-intercept represents the amount the designer charges for 1 h of work." is false.
The y-intercept is the value of y when x is 0, from the graph the y intercept represent the net income when he has not done any work, i.e. the y-intercept represent his expenses.
Therefore, the statement "The difference between 0 and the y-intercept represents the amount the designer spent on advertising." is true.
The slope of a straight line is given by the change in y divided by the corresponding change in x. From the graph, given that the y-axis represent the net income in dollars and the x-axis represent the time worked in hours. Change in y divided by change in x is given by dollars per hour which represent his hourly charge.
Therefore, the statement "The slope represents the designer's hourly rate." is true.
BRAINLIESTTTTTTTTTTT!!
1. For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?
2x + y = 8
−x − 3y = −12
3y + 12
−3y + 12
3y − 12
−3y − 12
2. please check my answer for the picture question
Answers
−x − 3y = −12 → - x = 3.y - 12 → x = -3.y + 12. So I will substitude in the 1st equation, x by -3.y + 12 (2nd answer)
2) you follow the same logic as previously done
and you will find 2x+4y ≥ -16.
Isolate y → 4y ≥ - 2x - 16→→y ≥ - x/2 -4
1st you notice that it's a straight line (and not - - - ), then the equation should have ≥ (and not > )
2nd) It's decreasing that means a<0 (a= - 1/2)
3rd) for x = 0 ; y = -4
All that satisfies the equation y ≥ - x/2 -4 OR 2x+4y ≥ -16 (last answer)
What is the scale factor use to create this dilation?
Answers
So the "before" is the large solid triangle and the "after" is the smaller dashed triangle.
The horizontal side of the solid triangle is 15 units. The corresponding side for the dashed triangle is 3 units. Dividing the two values gives: 3/15 = 1/5 = 0.2
Make this value negative. The reason why is due to the fact that we have a sort of reflection going on as we're scaling down the figure.
So the final answer is -0.2
write a word phrase for each algebraic expression
1. 100 - 5n
2. 25r + 6
Answers
Write a word phrase for each algebraic expression
Result
1. Five times a number minus one-hundred
2. Twenty-five times a number plus six
Solution
I recommend watching videos on turning algebraic expressions into word phrases. Try and figure out why the answer is the way it is.
Two benefits of following the 4 step method of problem solving
Answers
Following the 4-step method of problem-solving offers the benefits of structured decision-making and enhanced clarity in identifying and addressing core issues. These advantages significantly contribute to effective decision-making and successful implementation of solutions.
Explanation:The 4-step method, involving identification, planning, execution, and evaluation, provides a structured framework for tackling problems. In the identification phase, _Step 1_, issues are precisely pinpointed, aiding in accurate problem definition, crucial for effective decision-making. For instance, in a business scenario, if sales decline is the issue, this step helps clarify if it's due to product quality, marketing, or market changes, enabling focused decision-making.
Moving to the planning phase, _Step 2_, where strategies and solutions are devised, this structured approach ensures that all potential solutions are thoroughly explored, enhancing the quality of decisions made. This step involves a rigorous evaluation of each potential solution, ensuring a comprehensive understanding of their viability and implications.
During the execution phase, _Step 3_, the structured plan is put into action, benefiting from the earlier clarity and well-thought-out decisions. For example, if a marketing strategy was identified as a solution, this phase would involve implementing the chosen strategy with a clear roadmap, minimizing errors and optimizing resources.
Lastly, the evaluation phase, _Step 4_, allows for the assessment of the implemented solution's effectiveness. By systematically analyzing the outcomes against predefined metrics, this step ensures continuous improvement and learning from the process, contributing to more informed decision-making in the future. This structured approach, therefore, not only facilitates effective decision-making but also ensures successful implementation and ongoing refinement of solutions.
Here is complete question;
"What are two benefits of following the 4-step method of problem-solving, and how do they contribute to effective decision-making and solution implementation?"
Jason started a hat-making business. He spent $750 to purchase supplies to get started and he uses about $3.50 worth of supplies per hat made. Jason charges $15 for each hat. Let h represent the number of hats.
What is the minimum number of hats Jason will need to sell to make a profit?
A. 15h>750+3.5h
B. 3.5h≥750+15h
C. 3.5h>750+15h
D. 15h<750+3.5h
Answers
Point blank is the vertex of the angle marked in the figure
Answers
we know that
The angle marked in the figure is the angle CEB
The vertex is the intersection point of the line CD and the line AB
The intersection point is the point E
therefore
The answer is
Point E is the vertex of the angle CEB
A line goes through the point (6,–2) and has a slope of –3.
What is the value of a if the point (a,7) lies on the line?
Answers
slope(m) = -3
(6,-2)...x = 6 and y = -2
sub and find b, the y int
-2 = -3(6) + b
-2 = -18 + b
-2 + 18 = b
16 = b
so ur equation for this line is : y = -3x + 16
(a,7)......so y = 7......" a " is gonna be x
y = -3x + 16
7 = -3x + 16
7 - 16 = -3x
- 9 = -3x
-9/-3 = x
3 = x..........so " a " is gonna be 3 <===
The value of a in the point (a, 7) is 3
The slope intercept equation is as follows:
y = mx + b
where
m = slope
b = y-intercept
Therefore,
Let's find b using (6, -2)
m = -3
y = -3x + b
-2 = -3(6) + b
-2 = -18 + b
b = -2 + 18
b = 16
Therefore,
y = -3x + 16
let's find the value of a in (a, 7)
7 = -3x + 16
7 - 16 = -3x
-9 = -3x
x = -9 / -3
x = 3
Therefore,
a = 3
learn more: https://brainly.com/question/18851803?referrer=searchResults
Given that we have already tossed a balanced coin ten times and obtained zero heads, what is the probability that we must toss it at least two more times to obtain the first head
Answers
Final answer:
The probability that at least two more coin tosses are required to get the first head, after ten tails in a row with a balanced coin, is 50%.
Explanation:
The student is asking about the probability of a specific outcome in a sequence of coin tosses. Given that we have already tossed a balanced coin ten times and obtained zero heads, we want to calculate the probability of having to toss the coin at least two more times to get the first head. The probability of getting a head on any given coin toss is 0.5. To get the first head in at least two more tosses means we need a tail (T) on the next toss and then any outcome (H or T) after that. Therefore, we calculate the probability as follows:
The probability of getting a tail on the first toss is 0.5.The probability of getting any outcome on the second toss is 1 (since it can be either head or tail).The combined probability is the product of the two individual probabilities, which is 0.5 * 1 = 0.5 or 50%. Hence, the probability that we must toss the coin at least two more times to obtain the first head is 50%.
What is 781,407 rounded to the nearest ten thousand What is 781,407 rounded to the nearest ten thousand?
Answers
What is the multiplicative inverse of 23/47?
Answers
Evaluate the expression
-8 X 7 + 33 ÷ (-11)
PLEASE HELP ME ASAP
thanks
Answers
1) -8x7= -56
-56 + 33/-11
2) 33/-11
-56 + (-3)
Your answer is -59
-56 + 33 - 3
Add/subtract left to right.
-26
Translate this sentence into an equation.
The sum of 14 and holly's age is 55.
Use the variable h to represent holly's age.
Answers
H+14=55
55-14=H
Final answer:
The sentence 'The sum of 14 and Holly's age is 55' can be translated into the equation 14 + h = 55, where h represents Holly's age.
Explanation:
To translate the sentence into an equation, we identify the mathematical operations described by the sentence. The sentence 'The sum of 14 and Holly's age is 55' indicates an addition operation involving Holly's age and the number 14. Using the variable h for Holly's age, we form the equation 14 + h = 55. This is a simple linear equation where h represents an unknown value that can be solved for.
I want to know the answer of this question
Answers
Please help! 20 points!
Answers
12/3 = 4
it was dilated with a scale factor of 4
50 POINTS!!
Please show all of your work! Thanks.
Answers
mE = mF
9x + 12 = 3x + 24
- 3x - 3x
------------------------------
6x + 12 = 24
- 12 - 12
-------------------------
6x = 12
--- ----
6 6
x = 2
Check this to be sure: mE = 9(2) + 12 = 30 ; mF = 3(2) + 24 = 30 YEP
vertical angles equal each other so you have
angle E = angle F
9x+12 = 3x +24
subtract 12 from each side
9x = 3x +12
subtract 3x from each other
6x =12
divide both sides by 6
x = 12/6 = 2
x = 2
Which statement best explains whether △PQR is congruent to △XYZ?
△PQR is congruent to △XYZ because △PQR can be mapped to △XYZ by a rotation of 180° about the origin.
△PQR is congruent to △XYZ because △PQR can be mapped to △XYZ by a translation 5 units down followed by a reflection across the y-axis.
△PQR is not congruent to △XYZ because there is no sequence of rigid motions that maps △PQR to △XYZ.
△PQR is congruent to △XYZ because △PQR can be mapped to △XYZ by a reflection across the y-axis followed by a reflection across the x-axis.
Answers
Answer:
△PQR is not congruent to △XYZ because there is no sequence of rigid motions that maps △PQR to △XYZ.
Step-by-step explanation:
We can see from the diagram that XYZ is not the same size as PQR. This means there is no series of rigid motions, which preserve segment length, that maps PQR to XYZ.
Answer:
△PQR is not congruent to △XYZ because there is no sequence of rigid motions that maps △PQR to △XYZ.
Step-by-step explanation:
In a certain school,course grade range from 0 to 100. Adriana took 4 courses and her average course grade was 90. Roberto took 5 courses. If both students have the same sum of course grade, what was Roberto's
average
Answers
The total sum of Adriana’s grades are:
sum of grades = 4 * 90
sum of grades = 360
If Adriana and Roberto has similar total sum, therefore the average of Roberto’s grades is:
Roberto average = 360 / 5 = 72
Answer:
72
On what interval(s) is the graph decreasing? - use interval notation
On what interval(s) is the graph decreasing? - use interval notation
Identify any local maximums values and minimum values. - Algebra 2
Answers
The function is increasing on (-3,1).
No local or absolute minimum.
(1,4) is an absolute max.
How do you find the median of these numbers $17.49, $11.29, $16.89, $11.79?
Answers
The median is the middle number in a set after you place them least to greatest:
$11.29, $11.79, $16.89, $17.49
Well, since the numbers in the set are even, meaning there are only 4 numbers, we pick out the 2 middle numbers which would be, $11.79 and $16.89. Find the average (add them and divide by 2) and you'll get the median.
$11.79 + $16.89 = $28.68/2 = $14.34
Thus, the median is: $14.34
n2-14n+49 what’s the answer
Answers
n x n = n²
n x -7 = -7n
n x - 7 = -7n
-7n +(-7n) = -14n
-7 x -7 = 49
(n-7)² is your answer
hope this helps
and if you are doing the other thing
n = 7, 7
hope this helps
Ronny read for 2.75 hours yesterday. His older brother read for 1.18 hours and his younger brother read for 0.43 hours. How much longer did Ronny read than his two brothers combined? 1.14 hours 1.57 hours 1.61 hours 2.32 hours
Answers
it is A because add 1.18 and 0.43 to get 1.61 then subtract 2.75-1.61 is 1.14
~hope i help~
The time they read together, is the sum of their individual study time.
Ronny read 1.14 hours longer than her brothers combined
The given parameters are:
[tex]\mathbf{Ronny = 2.75\ hours}[/tex]
[tex]\mathbf{Older\ Brother= 1.18\ hours}[/tex]
[tex]\mathbf{Younger\ Brother= 0.43\ hours}[/tex]
The combined time her brothers studied is:
[tex]\mathbf{Both = Older + Younger}[/tex]
Substitute known values
[tex]\mathbf{Both = 1.18\ hours + 0.43\ hours}[/tex]
Evaluate like terms
[tex]\mathbf{Both = 1.61 \ hours}[/tex]
The time Ronny read longer is calculated as follows:
[tex]\mathbf{Time = Ronny- Both}[/tex]
Substitute known values
[tex]\mathbf{Time = 2.75\ hours - 1.61\ hours}[/tex]
Evaluate like terms
[tex]\mathbf{Time = 1.14\ hours}[/tex]
Hence, Ronny read 1.14 hours longer than her brothers combined
Read more about time at:
https://brainly.com/question/13968258
Please help! Identify the minimum value of the function y=3x^2-12x+10.
A) -2
B) 46
C) 10
D) 2
Answers
[tex]\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\ \begin{array}{llccclll} y = &{{ 3}}x^2&{{ -12}}x&{{ +10}}\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array}\qquad \left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right) \\\\\\ \left( -\cfrac{-12}{2(3)}~~,~~10-\cfrac{(-12)^2}{4(3)} \right)\qquad \textit{so the lowest value is at }10-\cfrac{(-12)^2}{4(3)} [/tex]
The minimum value of the function y=3x^2-12x+10 is found using the vertex form, and it is -2. This value corresponds to the y-coordinate of the vertex of the parabola.
To find the minimum value of the function y=3x^2-12x+10, we can use the vertex form of a quadratic equation, or complete the square method. We also know that a quadratic function with a positive coefficient for the x^2 term opens upwards and has a minimum value at its vertex. To get the vertex form, we complete the square:
y = 3(x^2 - 4x) + 10
y = 3(x^2 - 4x + 4 - 4) + 10
y = 3((x-2)^2 - 4) + 10
y = 3(x-2)^2 -12 + 10
y = 3(x-2)^2 - 2
Now, the vertex of this parabola is at (2, -2). As this is the vertex of a parabola that opens upwards, the y-coordinate of this point gives us the minimum value of the function, which is -2.
How to get to standard form from slope intercept?
Answers
The standard form of a linear equation is Ax + By = C.
So, to get from y = mx + b to Ax + By = C, you follow these steps:
y - mx = b
=> y + (-m)x = b
=> (-m)x + y = b
For example get the standard form from y = 3x + 5
=> (-3)x + y = 5
where =
A = -3
B = 1
C = 5
The three angles of a triangle are in the ratio 3:3:4. What information can you give about the triangle?
Answers
Hope this helps!
3x + 4x + 4x = 180 (angle sum property of a triangle is 180 degrees.)
12x = 180
x = 180/12
x= 15
the angles are 45, 60 and 60
it is an isosceles triangle.
solve for y: 7/9y = 42
Answers
Take the denominator and multiply it by the whole. 9*42=378
Then take your answer and divide it by the numerator. 378/7=54
To check your work just simply multiply 7/9 * 54 = 42
The sum of three numbers is 62. The second number is equal to the first number diminished by 4. The third number is four times the first. What are the numbers? Which three expressions could be used to represent the numbers? n; n - 4; 4n n; 4 - n; n + 4 n; n/4; n + 4
Answers
2nd number = n diminished by 4.....n - 4
3rd number is 4 times the first.....4n
ur 3 expressions are : n , n - 4, 4n <==
Answer:
Numbers: 11, 7 and 44
Expressions: n, n - 4, 4n
Step-by-step explanation:
We have that A + B + C = 62, where A, B and C represent numbers.
We know that the 2nd number (B) is equal to the first number (A), diminished by 4. This means B = A - 4
We also know that the 3rd number (C) is four times the first (A), that is to say 4*A. This means C = 4*A
If we replace this information in the first expression, we have
A + B + C = A + (A - 4) + (4*A) = 62
We change an equation of 3 variables to an equation of just one. Now we solve it putting together the terms that have the variable A:
A + A - 4 + 4*A = 62
2A + 4A - 4 + 4 = 62 + 4
6A = 66
A = 11
Our first number is 11, now we find B and C:
B = A - 4 = 11 - 4 = 7
C = 4A = 4*11 = 44
So, the numbers are 11, 7 and 44
If we change the A for a "n", the expressions that represent the numbers are n, n - 4 and 4n
vector is flying his helicopter at 200 miles per hour. how long has he been flying if he has traveled 1,200 miles? A. 2 hours B. 60 hours C. 6 hours D. 10 hours??? please help