Which matrix will always give a determinant of 0?
a matrix having all nonzero numbers
a matrix not being the identity matrix
a matrix not having equal rows
a matrix having two equal rows

Answers

Answer 1

Answer:

It's D, a matrix having two equal rows

Step-by-step explanation:


Related Questions

Which is the midpoint of the segment joining (12, 2) and (-5, – 7)?

Answers

Answer:

[tex]m(x, y)=(\frac{7}{2} , -\frac{5}{2} )[/tex]

Step-by-step explanation:

Midpoint of line segment is calculated as

[tex]m(x, y)=(\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )[/tex]  -----------(1)

Here

[tex](x_1, y_1) = (12,2) \ \ and \ \ (x_2, y_2) = (-5, -7)[/tex]

Substituting values in equation (1)

[tex]m(x, y)=(\frac{12-5}{2} , \frac{2-7}{2} )[/tex]

[tex]m(x, y)=(\frac{7}{2} , -\frac{5}{2} )[/tex]

PLEASE HELP

Carmen is writing an article for a magazine. She will be paid a flat fee and also will be paid for each word that is published. The total amount she can expect to be paid, in dollars, can be estimated using the function f(x) = 2.5x + 150 . where s is the number of words published . What is the inverse of this function?

Answers

Step-by-step explanation:

Given Function

f(x) = 2.5x + 150

f^-1(x) = ?

Let y = f(x)

y = 2.5x + 150

Interchanging the role of x and y we get,

x = 2.5y + 150

x - 150 = 2.5y

y = (x - 150) / 2.5

So therefore

f^ -1(x) = (x - 150) / 2.5

Hope it will help :)

For each equation, find a value for x that makes the statement true

Answers

Answer:

1. 36

2. 8.5

3. 2 i think

4. 6

5. 9

6. -3.6

Step-by-step explanation:

find the values of m &n .. please help !!

Answers

Answer:

m = 12.728 or 18/root (2)/2, n = 9

Step-by-step explanation:

To find m, we can use sin(45) and cos(45).

Since sin(45) = root (2)/2  and this equals 9/m.

We set the equation root (2)/2  = 9/m and solve for m.

9 divided by root (2)/2 would give us 18/root (2), or 12.728.

m is 12.728.

Same process for n but we are using cosine this time.

cos(45) = root (2)/2 and this equals n/12.728.

Solving for n would give us root (2)/2 times 12.728.

This gives us that n is 9.

The area of a rectangle is equal to its length
times its width. If the area of a rectangle is 4x
20, which option(s) could be the length and width
of that rectangle? Select all that apply
A. 2 feet long and (2x +20) feet wide
B. 4 feet long and (x + 5) feet wide
C2 feet long and (2x + 10) feet wide
D. 4 feet long and (x + 20) feet wide
E. 2 feet long and (x + 5) feet wide

Answers

Answer: I think that the answer is all of the above.

I am not 100% sure if that is completely correct so just pick some answers and see if they are correct.

Step-by-step explanation:

Simpliy: 4(2x + 3)

What’s the steps?

Answers

Answer:

8x + 12

Step-by-step explanation:

1.) 4(2x + 3)

2.) 8x + 12

You just distribute it out. When you have 8x + 12 the only other thing you could do is factor it to get back to 4(2x + 3)! Hope this helps!

Answer:

8x + 12

Step-by-step explanation:

4 × 2x = 8x

4×3 = 12

8x +12

HELP! I will rlly appreciate it! The average of Amy's, Ben's, and Chris's ages is 6. Four years ago, Chris was the same age as Amy is now. In four years, Ben's age will be 3/5 of Amy's age at that time. How many years old is Chris now?

Answers

Answer:

I believe the answer is 10

What do I divide by 5 to get 9

Answers

Step-by-step explanation:

Divide 45 / 5 to get 9

As 5 * 9 = 45

PLEASE HELP !!

What is the solution to the equation 6m - 60?
O m- 10
Om=50
Om=88
Om=360

Answers

m = 10

just divide 60 by 6!
The first option
-
Answer: m-10

please save my life

Answers

We are Given:_______________________________________________

ΔABC right angled at B

BC = 8

AC = 20

Part A:_____________________________________________________

Finding the length of AB

From the Pythagoras theorem, we know that:

AC² = BC² + AB²

replacing the given values

(20)² = (8)² + AB²

400 = 64 + AB²

AB² = 336                  [subtracting 64 from both sides]

AB = 18.3                   [taking the square root of both sides]

Part B:_____________________________________________________

Finding Sin(A)

we know that Sin(θ) = Opposite / Hypotenuse

The side opposite to ∠A is BC and The hypotenuse is AC

So, Sin(A) = BC / AC

Sin(A) = 8/20                      [plugging the values]

Sin(A) = 2/5

Part C:_____________________________________________________

Finding Cos(A)

We know that Cos(θ) = Adjacent / Hypotenuse

The Side adjacent to ∠A is AB and the hypotenuse is AC

So, Cos(A) = AB / AC

Cos(A) = 18.3/20                    [plugging the values]

Cos(A) = 183 / 200

Part D:_____________________________________________________

Finding Tan(A)

We know that Tan(θ) = Opposite / Adjacent

Since BC is opposite and AB is adjacent to ∠A

Tan(A) = BC / AB

Tan(A) = 8 / 18.3                  [plugging the values]

Tan(A) = 80 / 183

Answer:

by using Pythagoras law

ac²=ab²+bc²

20²=ab²+8²

ab²=20²-8²

AB=√336=18.33

Step-by-step explanation:

sin a=p/h=8/20=2/5

cos a =b/h=18.33/20

tana =p/b=8/18.33

anyone know this? just click on the photo

Answers

Answer:

6x - 4

Step-by-step explanation:

6x -4 is the answer to that question

i need a 67 help helpp

Answers

Answer:

Acute and Obtuse

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

9. HON bisects PQR and N is the midpoint of PR classify each triangle by its angles and sides.

a. APOR:
28
30
TO
14
b. APRT:
S
76
c. ATOS:
7
60R
P
5
76
d. AQNP:
(Number 9 in the picture pls)

Answers

have you gotten this figures yet

What is the value of x

Answers

Answer:

X = 56 degrees

Step-by-step explanation:

Angles D and F are equivalent. Because the three angles must add up to 180 degrees, you must add 112 to 68 in order to reach 180. Then you must divide this in half, getting 56 degrees as your answer.

180 - 68 = 112

112/2 = 56

X=56

could you help me with this?​

Answers

it is B and if you have problems like this i recommend downloading mathpapa it’s just a calculator and it’s useful for graph equations like this :)

At the rodeo, 256 hot dogs were sold for a total of $768. If each hot dog sold for the same amount, what would be the cost of 24 hot dogs?

Answers

Answer:

$72

Step-by-step explanation:

$768/265 = $3

$3 x 24 = $72

Answer:

$72

Step-by-step explanation:

768/256 = how much each hot dog was sold for

768/256 = 3

Each hot dog was sold for $3.

24*3 = $72

Therefore, the cost of 24 hot dogs is $72.

what are the coordinates of the x-intercept of the graph?
a. (-6,0)
b. (0,-6)
c. (9,0)
d. (0,9)​

Answers

Answer:

d. (9, 0)

Step-by-step explanation:

(x, y) so...

Where the line crosses the x-plane, x = 9

Since this is the x-intercept y will always equal zero

Therfore x-int = (9, 0)

On a map, a clothing store is located at (-2, -3). A seafood restaurant is located 6 units to the right of the clothing store. What are the coordinates of the restaurant?

Answers

No Answer

Step-by-step explanation:

There is no image so theres no way to help,

If you are going to ask this again make sure to put an image to get a better understanding, im sorry

Verified by FaZe DoDo

Help please
Which expression is equivalent to (8.4x + 2.9) + (-3.7x + 5)?​

Answers

Answer: 4.7x + 7.9

Step-by-step explanation:

Alvin’s age is three times Elga’s age. The sum of their ages is 40. What is Elga’s age?

Answers

Answer:

13

Step-by-step explanation:

40 devided by 3=13

27+13=40

Answer:

16

Step-by-step explanation:

because

PLEASE HELP DUE VERY SOON! :)

Answers

Answer:

y = (1/3)x

Step-by-step explanation:

1) Use the slope formula: (y2-y1)/(x2-x1) and then substitute both points into the formula. That should give you (2-0)/(6-0) = 2/6 = 1/3.

1/3 would then be your slope

2) Since the y intercept is (0,0), the y-intercept isn't needed in the slope intercept equation

So that would give you y = (1/3)x

Pls help with number 4 PLSSSS

Answers

Answer:

Step-by-step explanation:

y=2x+4 I check over it to make sure it was right hope this helps

simplify the mathematical expressions to determine the product or quotient in scientific notation. Round so the firs factor goes to the hundredth place.

Answers

Answer:

hol on im finna learn about it then answer

Step-by-step explanation:

...

Answer:

do u have the expression

Step-by-step explanation:

The slope of a line is 9/4. What is the slope of any line parallel to this line?

Answers

Answer:

below

Step-by-step explanation:

The slope of any line that is parallel to another is ALWAYS the same. Thus, the slope remains 9/4.

Best of Luck!

-24 = u ÷ 6

will give points and mark brainliest please help.

Answers

Answer:

-24=u / 6

  x6

-144=u

   

Step-by-step explanation:

Answer:

u = -144

Step-by-step explanation:

To solve this problem use the reverse rule. Multiply -24 by 6 to find the value of u.

-24 x 6 = -144

Check Work:

-144 ÷ 6 = -24

A balloon is floating above a lake and a sunken canoe is below the surface of the lake. The balloon's vertical position is 12 meters and the canoe's is -4.8 meters. The equation 12 + d = -4.8 represents this situation.

Answers

Answer:

4.8x345+338283

Step-by-step explanation:

The value of y varies directly as x, and y is 75 when x is 5. What is the value of y when x is 1?

Answers

Answer:

y would equal 15 when x is 1

A man drove a car 183.75 miles. The car's gas mileage for the drive was 24.5 miles. How many gallons of gas did the car use?

Answers

Answer:

7.5 gallons of gas

Step-by-step explanation: I know how to divide.

which rule best described the following pattern 8,4,10,6,12,8,14

Answers

Answer: -4,+6,-4,+6,-4,+6

Answer:

-4 and +6

Step-by-step explanation:

The sequence follows a pattern of subtracting 4 then adding 6.

8 - 4 = 4 + 6 = 10 - 4 = 6 + 6 = 12 - 4 = 8 + 6 = 14

Use the properties of radicals to simplify the expression​

Answers

Given:

The expression is

[tex]\dfrac{\sqrt[3]{9}}{\sqrt[3]{4}}[/tex]

To find:

The simplified form of given expression.

Solution:

We have,

[tex]\dfrac{\sqrt[3]{9}}{\sqrt[3]{4}}[/tex]

It can be written as

[tex]\dfrac{\sqrt[3]{9}}{\sqrt[3]{4}}=\sqrt[3]{\dfrac{9}{4}}[/tex]                    [tex]\left[\because \dfrac{\sqrt[a]{x}}{\sqrt[a]{y}}=\sqrt[a]{\dfrac{x}{y}}\right][/tex]

Therefore, the simplified form of given expression is [tex]\sqrt[3]{\dfrac{9}{4}}[/tex].

Note: We can further simplify this expression but be need use exponential properties.  

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