Answer:n=-2 or n=4
Step-by-step explanation:
Q is not inversible if det(Q)=0
[tex]\left|\begin{array}{ccc}6&7&-1\\3&n&5\\9&11&n\end{array}\right| =0\\\\\\\\6(n^2-55)-3(7n+11)+9(35+n)=0\\\\n^2-2n-8=0\\\\\Delta=36=6^2\\\\n=\dfrac{2-6}{2} =-2\ or\ n=\dfrac{2+6}{2}=4\\[/tex]
What is the inverse of multiplication?
(A) subtraction
(B) division
(C) addition
(D) multiplication
Answer:
b
Step-by-step explanation:
Answer:
b) division.
Hope it helps you....Solve for B.
A = 5B+C
Answer:
B = (A - C)/5
Step-by-step explanation:
Subtract both sides by C
A - C = 5B
Divide both sides by 5
B = (A - C)/5
Please help!!!!!!!!!!!!!!
Step-by-step explanation:
[tex] {40}^{ \frac{1}{2} } and \: 2 \sqrt{10} [/tex]
What is the range of the function on the graph
all real numbers
all real numbers less than or equal to 1
all real numbers less than or equal to 3
all real numbers less than or equal to 0
Marks and con
Save and Exit
Det
Submit
Answer:
where is the graph
Step-by-step explanation:
What percentage of households in the survey have four or more televisions?
Answer:
2.5% ?
Step-by-step explanation:
.025 as percentage is 2.5%
2x^2(6x^3-3x+1) need help
Answer:
12x^5-6x^3+2x^2
Step-by-step explanation:
Use 1/2 of preparation now. In 24 hours use the remaining amount of preparation there is 8 ounces of preparation in the bottle. How much will you use for each use?
Which of these is an incorrect expression of a rational number?
A
−42−6
B
1−19
C
0−27
D
−120
Answer:
I believe it to be D
Step-by-step explanation:
because thats the only one different out of those four.
Answer:
the answer is -120
Step-by-step explanation:
i don’t understand at all
Answer:
26
Step-by-step explanation:
It says find f(f(2)), so we need to find f(2) and then input that into the same function. f(2)=5 so then we input that into the function again and get 26. Boom.
Answer:
26
Step-by-step explanation:
Ok first u find f(2) so for that u have to input 2 into the value of x. So 2^2 +1 =5
When we get 5 we input THAT into f(x)
So:
F(5) = 5^2 +1
=26
what is trigonometry
what is trigonometry
trigonometry is a very common branch of mathematics the word trigonometry means measurement of side of a triangle this branch of mathematics can be used to find the angle of a triangle knowing its side or to find the ratio of side of triangle knowing its angle
fact
angle equals to Arc / radius its unit is radian Radian equals to 180 degree sin, cos ,tan, cot, sec , cosec 6 trigonometric ratio each ratio is written by its first small English laterFrom 1985 through 1995, the yearly gross farrm revenue (in millions) in the United States can be modeled by the function R(t)=-t^2+7t+159 and the yearly farm cost (in millions) in the United States can be modeled by the function c(t)=t^2+131 where t is the number of years since 1985. Write a new function, P(t), that models the yearly profit after 1985
The profit function is simply the difference between the revenue function and the cost function. The profit function that models the yearly profit after 1985 is [tex]P(t) = 7t + 28[/tex]
Given that:
[tex]R(t) = t^2 + 7t + 159[/tex]
[tex]c(t) = t^2 + 131[/tex]
The profit function P(t) is calculated as follows:
[tex]P(t) = R(t) - c(t)[/tex]
So, we have:
[tex]P(t) = t^2 + 7t + 159 - (t^2 + 131)[/tex]
Open brackets
[tex]P(t) = t^2 + 7t + 159 - t^2 - 131[/tex]
Collect like terms
[tex]P(t) = t^2- t^2 + 7t + 159 - 131[/tex]
[tex]P(t) = 7t + 28[/tex]
Hence, the profit function that models the yearly profit after 1985 is [tex]P(t) = 7t + 28[/tex]
Read more about profit functions at:
https://brainly.com/question/11334756
............-2
6.7x10 =
Answer: 67
Step-by-step explanation:
When you multiply with numbers like 10, 100, 1000, 10000, and so on you just have too right or left (division : left)(multiplication : right) according to the zero's. Like 100 has 2 zero's so then if you're multiplying with that you will go 2 to the right, and dividing you will go 2 to the left. Lets apply the same logic here, the question is 6.7 x 10, 10 has 1 zero and we are multiplying here so then, we have to go to the right, so 6.7 will become 67.
Solve : x/3-2/5 = 2x/15-3/5
Step-by-step explanation:
x/3-2/5=2x/15-3x
5x-6=2x-9
5x-2x=-9+6
3x=-3
3x/3=-3/3
x=-1
Help me out pls n thanks!!
Answer:
[tex]m^4\\[/tex]
Step-by-step explanation:
M times itself 4 times is denoted by [tex]m^4[/tex]
Answer:
m⁴
Step-by-step explanation:
m*m*m*m = m⁴, as you're multiplying it 4 times
Please help!! Due tm! NO LINK
Ans4
Step-by-step explanation:
Step-by-step explanation:
25 . f (-6) = 7
26 . f (0) = -2
27 . x = 2
28 . x = -4
Jane is solving the equasion -2x + 4 = 18. She tells her partner that they should add two to both sides first since that is the inverse of -2. Did Jane start this equation correctly? Explain your reasoning
Answer:
No
Step-by-step explanation:
Given
- 2x + 4 = 18
note the inverse of - 2 is - [tex]\frac{1}{2}[/tex] not - 2
However , the first step is to isolate the term in x by subtracting 4 from both sides.
- 2x = 18 - 4 = 14 ( divide both sides by - 2 )
x = - 7
There are 60,659 people under the age of 14 years old
There are 215,927 people age between 15 and 64 years old
There are 36,610 people over the age of 65 years old
What is the Old Age Dependency Ratio as a decimal rounded to
the Thousandths place?
Answer:
(2,800/1,500) * 100 = 187%
Step-by-step explanation:
what is the coordinate points for r(-2)=0
I NEED HELP ASAP FIRST PERSON CORRECT GETS BRAINLIST
Answer:
the first one has no solution because the lines never intersect.
the second one has one solution: (-3, 3)
the third one has an infinite solution because there lines are on top of each other the entire time.
Step-by-step explanation:
:)
Step-by-step explanation:
(i) No solution
Because they are parallel to each other
(ii) One solution
Because they intersect each other
(x,y) = (-3,3)
(iii) Infinite solution
Because they are in one line
Emmy made lasagna for dinner. She put The lasagna into the oven at 4:27 PM and took it out at 5:03 PM how long was the lasagna in the oven
Answer:
36minutes
Step-by-step explanation:
5 :03 - 4:27
= 36minutes
I need with question
Answer:
AB = 26
Step-by-step explanation:
BC = 36
AC = 62
AB = ?
to find ab we need to
AB + BC = AC (given)
AB + 36 = 62
AB = 62 - 36
AB = 26
five more than twice a certain number
During a 12-hour period, the
temperature dropped 48º.
How many degrees did the
temperature drop each hour?
Answer:
4 degrees every hour
Step-by-step explanation:
Since it was 48 degrees over a total of 12 hours we can do:
48 / 12 = 4 degrees.
It may be presented as -4 degrees since it is dropping in tempature therefore making it negative.
Find the area of a rectangular ground which is 14 1/2 m long and 10 2/3 m wide.
Answer:
154 2/3 m²
Step-by-step explanation:
14 1/2 x 10 2/3
First, make the mixed numbers into improper fractions:
29/2 x 32/3
Simlify by cross cancelling if you can:
29/1 x 16/3
Then, multiply:
29/1 x 16/3 = 29 x 16/1 x 3 = 464/3
Finally, turn the new improper fraction into a simplified mixed number:
464/3 = 154 2/3
The area is 154 2/3 m²
Please help!!!!! 25 POINTS
How do you find the solutions to a system of equations involving quadratic functions and other functions?
How do quadratic functions compare to linear and exponential functions?
Answer:
1. How to Solve using Algebra
Make both equations into "y =" format.
Set them equal to each other.
Simplify into "= 0" format (like a standard Quadratic Equation)
Solve the Quadratic Equation!
Use the linear equation to calculate matching "y" values, so we get (x,y) points as answers.
Algebraic method is more easy to do
2. linear functions have constant first differences. quadratic functions have constant second differences. exponential functions have a constant ratio.
Lawrence spent $1.89 on a bottle of paint and $0.45 on a brush. What was the total amount he spent? Use the model to help you.
-1/2 (-3y + 10)
Please, I need help on this one.
Answer:
[tex] - \frac{1}{2} ( - 3y + 10) \\ \\ = \frac{3}{2} y - \frac{10}{2} \\ \\ = { \boxed{ \boxed{ \frac{3}{2} y - 5}}}[/tex]
Three sets of numbers are shown in the
Venn diagram.
Integers
Rational
Numbers
Whole Numbers
Which of these numbers can be placed in
the shaded area of the diagram? (6.2A |
6.1B, 6.1F)
F 8
G 3
H 17.5
J
Not here
Answer:
g 3
Step-by-step explanation:
it is in the image
The actual distance between A and B is 960 metres.
a) Work out the scale on the map. Give your answer in the form 1:n
b) Work out the actual distance between A and C in kilometres. Your final line must say, AC = ... km
Answer:
Step-by-step explanation:
a. 960 / 4 = 240 for 1 grid
1/2 cm = 24000
1 : 48000
b. A to C
AC² = 3² + 6²
AC² = 9 + 36
AC²= 432 + 1728
AC² = 2160
AC = √2160 km
integral of 1/(x^2-x+1)
[tex]\boxed{\sf \displaystyle{\int}x^ndx=\dfrac{x^{n+1}}{n+1}}[/tex]
[tex]\\ \sf\longmapsto \displaystyle{\int}\dfrac{1}{x^2-x+1}[/tex]
[tex]\\ \sf\longmapsto \displaystyle{\int}x^{-2}-x^{-1}+1[/tex]
[tex]\\ \sf\longmapsto \displaystyle{\int}x^{-2}-\displaystyle{\int}x^{-1}+\displaystyle{\int}1[/tex]
[tex]\\ \sf\longmapsto \dfrac{x^{-2+1}}{-2+1}-\dfrac{x^{-1+1}}{-1+1}+1[/tex]
[tex]\\ \sf\longmapsto \dfrac{x^{-1}}{-1}-\dfrac{x^0}{0}+1[/tex]
[tex]\\ \sf\longmapsto -\dfrac{1}{x}-\dfrac{1}{0}+1[/tex]
[tex]\\ \sf\longmapsto -\dfrac{1}{x}-\infty+1[/tex]
[tex]\\ \sf\longmapsto \infty[/tex]
