(PLEASE HELP ME)
Which of the following equations is correct?

Please help me thank you so much!!

Answer:1/5 is the answer

Step-by-step explanation:

Answer:

The answer is below

Step-by-step explanation:

The system of equations:

8x-9y+13z=11

-8x-5y+5z=15

3x+4y-8z=-10

The equations can be represented in matrix form as:

AX = B

X = A⁻¹B

Therefore:

[tex]\left[\begin{array}{ccc}8&-9&13\\-8&-5&5\\3&4&-8\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{c}11\\15\\-10\end{array}\right]\\\\\\\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}8&-9&13\\-8&-5&5\\3&4&-8\end{array}\right] ^{-1}\left[\begin{array}{c}11\\15\\-10\end{array}\right]\\[/tex]

[tex]\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}\frac{1}{19} &-\frac{1}{19}&\frac{1}{19}\\-\frac{49}{380}&-\frac{103}{380}&-\frac{36}{95} \\-\frac{17}{380}&-\frac{69}{380}&-\frac{28}{95} \end{array}\right] \left[\begin{array}{c}11\\15\\-10\end{array}\right]\\\\\\\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{c}-0.74\\-1.69\\0.13\end{array}\right] \\[/tex]

Answer:

The hight length : h

The base length : a

Apply the Pythagorean theorem in the right triangle :

h² = 13² - (10/2) = 144

h  = √144 = 12 cm

S = (a x h)/ 2 = ( 10 x 12 )/2 = 60 cm²

Step-by-step explanation:

Answer:

1,4

Step-by-step explanation:

its just that hoped this helped

Answer:domain

Step-by-step explanation:

Answer:

it is -5.3x-4.2-x

Step-by-step explanation:

I just solved the equation by subtracting or adding.

Answer:

1: Yes

2: No

3: Yes

4: Yes

Step-by-step explanation:

Answer:

Yes

No

Yes

Yes

Step-by-step explanation:

Answer:

Step-by-step explanation:

n+2/3 ≥ 5 1/3

Answer:

why does it say right twice? ...

Answer:

The answer is -2 or C

Step-by-step explanation:

Just input 4 into the equation as x. f(4)=2(4)-10. This gets you 8-10 which is -2. Hope this helps!

Answer:

hey there, person with the same name as me lol. the answer is c. -2

Step-by-step explanation:

in the question they showed that f(x) = 2x - 10

when they ask for the value of any number like f(4)

just replace the variable with this number

for this it will be

2x - 10  = 2 * 4 - 10

which is 8-10

which is equal to -2

you're welcome....

Answer:

The answer for question 22 is 40.

-

Step-by-step explanation:

[tex] \frac{8 \: red \: cars}{3 \: blue \: cars} = \frac{x}{15 \: blue \: cars} \\ \\ \frac{3x}{3} = \frac{120}{3} \\ \\ x = 40[/tex]

These all of the answers for question 4-113:

(The answers are in bold, italic, and underlined. (e.g. word))

Answer:

21.8901 g

Step-by-step explanation:

Given that:

1 gram of pure salt contains 0.393 g of sodium

1 gram = 0.393g

Gram of sodium in 55.7g of pure salt will be x

1g = 0.393g

55.7g = x

Cross multiply:

x = 55.7 * 0.393

x = 21.8901

55.7 g of pure salt will contain about 21.8901 g of sodium chloride

Answer:

1 1/3

Step-by-step explanation:

9514 1404 393

Answer:

  16

Step-by-step explanation:

If we multiply the numbers by 8, the difference between the first (Sushil) and last (Peter) will be 8.

  4 : 2 : 3 = 32 : 16 : 24

This tells us Alex gets 16 sweets.

Answer: 10 wreaths

Step-by-step explanation:

First identify the terms.

She has a booth that cost $200. This price will not change thus making it a Fixed cost.

Making a wreath would cost her $10 each time so this is a Variable cost.

She sells the wreath for $30 so this is the selling price.

Breakeven = Fixed Cost / Contribution margin

Contribution margin = Selling price - Variable cost

= 30 - 10

= $20

Breakeven point = 200/20

= 10 wreaths

Answer:

the answer would be 4 cm i think

Answer:

the answer is 5.

you need to use the volume formula of the prism and you will get the answer.that is 5

Match up the sides for each triangle using the little marks through the sides

1 to 1, 2 to 2 and 3 to 3

When you do this you see that x corresponds to c on the first triangle.

The 3 angles in a triangle = 180.

Find c by subtracting A and B from 180

C = 180- 29-63 = 88

Now x = c so x = 88

The answer is C. 88

Answer:

(2 , 5)

Step-by-step explanation:

point (x,y) that divides the segment   PI in the ratio 2 to 1

PD=4 - (-2) = 6     PE/ED=2/1     PE=2ED      PE+ED=6    3ED=6    ED=2   PE=4

coordinate of E (2,1)   .... 2 is x coordinate of E

DI=7-1=6    DF/FI=2/1     DF=4

coordinate of F (4,5)   .... .... 5 is y coordinate of E

CF // PD            PC/CI=DF/FI=2/1

C (2,5)

  Coordinates of the point intersecting segment PT in the ratio of 2 : 1 will be (2, 5).

   Given in the question,

   If the endpoints of a segment PQ have been given as[tex]P(x_1,y_1)[/tex] and [tex]Q(x_2,y_2)[/tex] and a point [tex](h,k)[/tex] divides this segment in the ratio of m : n,

[tex]h=\frac{mx_2+nx_1}{m+n}[/tex]

[tex]k=\frac{my_2+ny_1}{m+n}[/tex]

    If the extreme ends of a segment PT are [tex]P(-2,1)[/tex] and [tex]T(4,7)[/tex] and a point (h, k) divides this segment in ratio of 2 : 1,

[tex]h=\frac{2(4)+1(-2)}{2+1}[/tex]

[tex]h=2[/tex]

[tex]k=\frac{2(7)+1(1)}{2+1}[/tex]

[tex]k=5[/tex]

   Therefore, coordinates of the point intersecting segment PT in the ratio of 2 : 1 will be (2, 5).

Learn more,

https://brainly.com/question/15244734

Answer:

49π cm²

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

Here diameter = 14, so r = 14 ÷ 2 = 7, then

A = π × 7² = 49π cm²

Answer:

49pi cm^2

Step-by-step explanation:

[tex]a = \pi \: {r}^{2} [/tex]

Because the radius is half of the diameter, divide it by 2 to get the radius to place in the formula which is 14 ÷2 = 7

so

A = pi × 7^2

A= pi × 49cm^2

Answer:

2/1 or 2

Step-by-step explanation:

to find the slope you have to calculate the rise over run, do this by picking two spots on the line that go thourgh the corner of a square. then count the amount up the is your rise then the lateral movement, the is your run.

this means the answer is 2/1 that can be simplified to 2.

Answer:

E

Step-by-step explanation:

bing bing bang

Answer:

2

Step-by-step explanation:

1st square number =1

1+1=2

Answer:

36

Step-by-step explanation:

88 - 52

=36

Answer

I think it's the third one :)

Step-by-step explanation:

The requried equation that matches the Ariels model are as follows,
A, 1512 / 8 = 189   and   C = 1688 / 8 = 211.

The equation model is defined as the model of the given situation in the form of an equation using variables and constants.

Here,
A division of 8 has been showing,
So the expression that matches the division of 8 would be the required expression,
So,
A, = 1512 / 8 = 189     [true]
B, = 1600/80 = 8      [false]

C = 1688 / 8 = 211    [true]
D = 1600 / 2 = 800   [false statment]

Thus, the requried equation that matches the Ariels model are as follows,
A, 1512 / 8 = 189   and   C = 1688 / 8 = 211.

Learn more about models here:
https://brainly.com/question/22591166
#SPJ5

We can start this equation off by doing the inverse operation for each sides. We add 9 to both sides in order to get rid of the -9 term to get:

[tex]-11x = 77[/tex]

We now divide both sides by -11 in order to "isolate" our x variable to get:

[tex]x = -7[/tex]

Answer:

x=-7

Step-by-step explanation:

-11x=68+9

-11x=77

divide both sides by -11

x=-7

Answer:

576 feet.

Step-by-step explanation:

5 - 13 = 2 minutes x 60 =120 seconds that the bee spent flying back and forth.

a - Distance = Time x Speed

Time =Distance / Speed

 D / 12  +  D / 8 = 120, solve for D

b - D = 576 feet from the hive to the flowerbed.

Answer:

 ( 2x +4) ( x+6)

Step-by-step explanation:

Explanation:-

Given expression   2 x² + 16 x + 24

The factors of 48 =  12 × 4

⇒   2 x² + 16 x + 24

⇒    2 x² + 12 x + 4x + 24

⇒   2 x ( x +6 ) + 4( x +6)

⇒   ( 2x +4) ( x+6)

Answer:

3.6

Step-by-step explanation:

divide 36 by 10 be sure it's the easiest part

Answer:

Unit rate per year is :---

[tex] \frac{(50.4 - 7.2)}{(14 - 2)} = \frac{43.2}{12} = \boxed{3.6 \: feet \: per \: year} \\[/tex]

Answer:

its c or d

Step-by-step explanation: