Answers
Related Questions
Does this matrix have an inverse?why or why not ?
Answers
Answer:
C. No, because it's determinant is zero
Step-by-step explanation:
[tex]A= \begin{bmatrix} 16 & - 4\\\\ 8 & - 2\end{bmatrix} [/tex]
[tex] det(A) =\begin{vmatrix} 16 & - 4\\\\ 8 & - 2\end{vmatrix} [/tex]
[tex] det(A) = 16\times (-2)-(-4)\times 8[/tex]
[tex] det(A) = -32+32[/tex]
[tex] det(A) = 0[/tex]
This matrix have no inverse, because it's determinant is zero.
It is given a 2*2 matrix of order 2.
To find this matrix have an inverse or not.
What is determinant?
A quantity obtained by the addition of products of the elements of a square matrix according to a given rule.
The given matrix is
A= [tex]\left[\begin{array}{ccc}16&-4\\8&-2\\\end{array}\right][/tex]
det A=16*(-2)-(-4)*8=0
det A=0
So, this matrix have no inverse, because it's determinant is zero.
Learn more about determinant here:
https://brainly.com/question/20367047
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35,800 at 8.2% for 3 years
Answers
Answer:
A = $446,068.00
Step-by-step explanation:
A = $446,068.00
I = A - P = $88,068.00
Equation:
A = P(1 + rt)
Calculation:
First, converting R percent to r a decimal
r = R/100 = 8.2%/100 = 0.082 per year.
Solving our equation:
A = 358000(1 + (0.082 × 3)) = 446068
A = $446,068.00
The total amount accrued, principal plus interest, from simple interest on a principal of $358,000.00 at a rate of 8.2% per year for 3 years is $446,068.00.
Question 15 (1 point)
The surface area of a sphere varies directly with the square of its radius. A soap bubble with a
0.75 in. radius has a surface area of approximately 7.07 square inches. Find the value of k, and
then find the radius of a seventeenth-century cannonball that has a surface area of 113.1
square inches.
Answers
Answer:
The value of k is 12.57Radius of a seventeenth-century cannonball is 2.999 inches which can be rounded off to 3Step-by-step explanation:
Let s be the surface area and r be the radius
Then according to given statement
s∝r²
Removing the proportionality symbol introduces k, the constant of proportionality
[tex]s = kr^2[/tex]
Now
A soap bubble with a 0.75 in. radius has a surface area of approximately 7.07 square inches.
Putting in the equation
[tex]7.07 = k (0.75)^2\\7.07 = k * 0.5625\\k = \frac{7.07}{0.5625}\\k = 12.5688..\\k = 12.57[/tex]
The euqation beomes
[tex]s = 12.57r^2[/tex]
Putting s = 113.1 in the equation
[tex]113.1 = 12.57r^2\\r^2 = \frac{113.1}{12.57}\\r^2 = 8.99761...\\\sqrt{r^2} = \sqrt{8.9976..}\\r = 2.9996..[/tex]
Hence,
The value of k is 12.57Radius of a seventeenth-century cannonball is 2.999 inches which can be rounded off to 3Pls help a girl out :/ and show work pls
Answers
Answer:
it is B
Step-by-step explanation:
Fill in table using this function rule y= -4x - 2
Answers
Answer:
Step-by-step explanation:
x y
-2 6
-1 2
0 -2
1 -6
2 -10
1. Which equation does not represent a
linear function?
A y = -2x
B y = x
c y = 6x +2
Answers
isn’t a linear equation because it has to be written like y=mx+b
Please Help! Will mark brainliest!
Directions; Write a system of equations for each of the descriptions below, and then solve the systems. Hint: you can graph the equations to find the solutions.
A golfer completed 18 holes with a total of 79 strokes. On each hole, he met par, which was either four or five each time. How many holes were played in four-strokes?
Answers
Answer:
11
Step-by-step explanation:
Let a= times he hit 4 par
Let b = times he hit 5 par
a+b=18 => 4a+4b = 72
4a+5b=79
b=79-72=7
So a = 11
answer:
18 = 4a + 5b = 79, b = 79 - 72 = 7 → 11 holes
i hope this helps ♡♡♡
Find the slope of the line that passes through
points (7,-5) and (-1,-3).
a.) 4.
b.) 1/4
c.) -4
d.) -1/4
Answers
(-3+5)/(-1-7) = 2/-8 = -1/4
The answer is d) -1/4
- 5 + 7k = -19
Help pwease
Answers
Answer:
k = -2
Step-by-step explanation:
-5 + 7k = -19
7k = -14
k = -2
A copy machine produces six pages a print and six seconds how many pages are produced per second
Answers
Answer:
if the printer produces 6 pages in 6 seconds it would be 1 page per second.
mathematically: 6 pages/6 seconds= 1 page/second
Explain why -6(3)=-18
Answers
Answer:
Step-by-step explanation:
- 6 (3)=-18
when you multiply 6 x 3. it would be 18 using multiplication and then a positive and a negative equals a negative so then a the 18 would become - 18.
I need asap!!!brainliest for best answer
Answers
Answer:
D
Step-by-step explanation:
the answer is D ok so u see how she jsbdjdbd
I’ll mark brainliest please help with all and leave a small explanation! :)
Answers
Answer:
A y=6 x= 3
B y=4 x= 2
C y=6 x= 2
D x= 4 y= -2
Step-by-step explanation:
you need to add the numbers on and look how many once u do thag u can see the pattern it makes
Which expression is half as large as the expression 345+23?
Answers
Answer:
368:2= 184
................
Final Answer: [tex]184[/tex]
Steps/Reasons/Explanation:
We will need to divide [tex]345 + 23[/tex] by [tex]2[/tex] to get the expression that is half as large of the sum of [tex]345 + 23[/tex].
Question: Which expression is half as large as the expression [tex]345 + 23[/tex]?
[tex]\frac{345+23}{2}[/tex] = [tex]\frac{368}{2}[/tex] = [tex]184[/tex]
~I hope I helped you :)~
need help with this one
Answers
Answer:
triangle 2.854e55
Step-by-step explanation:
Amanda Wrote a list that contained only multiples of 16. Which of the following lists could be Amanda's list?
A. (1,2,4,8,16)
B (16,32,48,64,80)
C. (16,32,42,64,84)
D. (4,812,16,20,24,28)
Answers
A. Gives factors, not multiples
B. Puts the multiples in the correct order, and the numbers are correct
C. 2 numbers are incorrect
D. WHERE DID 812 COME FROM!?!?
The only logical answer is B.
help asap please help
Answers
Answer:
Answer:
The Prime Factorization is:
2 x 5 x 11
Step-by-step explanation:
PLEASE I NEED HELP AND I ONLY HAVE AN HR Question 2 (4 points)
(04.02)
Determine whether the graph represents a proportional relationship. (4 points)
A graph is shown. The x-axis is labeled from 0 to 9. The y-axis is labeled from 0 to 15. Four points are shown on the graph on ordered pairs 0, 2 and 1, 6 and 2, 10 and 3, 12. These points are joined by a line. The label on the x-axis is Number of cars. The title on the y-axis is Number of wheels.
a
Yes, it is a proportional relationship because the graph goes through the origin
b
Yes, it is a proportional relationship because the graph is a straight line
c
No, it is not a proportional relationship because the graph is not a straight line
d
No, it is not a proportional relationship because the graph does not go through the origin
Answers
------> The Answer Is C <------
Hope this helps have a good day :D
help⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️
Answers
Answer: 2/1/3
Step-by-step explanation:
There are 2 white beads for every 7 purple beads. There is a total of 8 white beads. How many purple beads are there?
Answers
Answer:
28
Step-by-step explanation:
In order to redress a gender imbalance in its workforce, a company needs to appoint men and
women in the ratio 4:5. Over the next year 90 new jobs are expected to be advertised. How many
of the appointees should be men, and how many women?
Answers
Answer:
40 men 50 women
Step-by-step explanation:
4/9 should be men, 5/9 should be women.
In the game of rock, paper,scissors, two people play, and equally likely that you will win, lose or tie. Find the probability of having different outcomes in two tries.
A) 2/3
B) 1/2
C)1/3
D)5/9
Answers
help pleasseeeeeeeeee 6. If Ai charges $3.25 per serving of ice cream, how much will she make if she sells it to 12
½ people (children under 5 get half scoops for half the amount, which is why there is a
half person).
Answers
Answer:
40.62
Step-by-step explanation:
that's the answer I got
|look what brainly did they got me a good grade in math thank you brainly I thank you so much love you all
Answers
Answer:
you welcome bih
Step-by-step explanation:
Answer:
Congrats
Step-by-step explanation:
I'm glad its helping.
Find the missing side
Answers
Answer:
I believe the answer is 48
Step-by-step explanation:
Subtract 30 from 78 to get your answer.
Find m Question below
Answers
Answer:
104 deg
Step-by-step explanation:
A central angle has the same measure as the arc it intersects.
m<JKL = m(arc)JJ = 104 deg
Find the unit rate. Round to the nearest hundredth, if necessary.
$140 for 13 ft2
the unit rate is:
Answers
Explanation: You divide 140 by 13 and round to nearest hundredth.
Suppose we have universal set U. What does it mean to say that X is a subset of U?
Answers
Answer:
All of the elements of X are elements of U.
Step-by-step explanation:
The points (5,-2) and (9, r) lie on a line with slope 3/2. Find the missing coordinate r.
Answers
circle two digits that should be switched places to make this sequence correct.
3/7>0.45>43%
Answers
Answer:
all of them need to be switched
Explanation:
0.45>43%>3/7