solve by the matrix method , x+y/5 -1=y-x​

Answer: simplifying

Step-by-step explanation:

2y + -10 = 6x

Reorder the terms:

-10 + 2y = 6x

Solving

-10 + 2y = 6x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '10' to each side of the equation.

-10 + 10 + 2y = 10 + 6x

Combine like terms: -10 + 10 = 0

0 + 2y = 10 + 6x

2y = 10 + 6x

Divide each side by '2'.

y = 5 + 3x

Simplifying

y = 5 + 3x

Step-by-step explanation:

your well come...

Answer:

2844

Step-by-step explanation:

13 is to 12 as 3081 is to x. 13/12 = 3081/x. 12 * 3081 = 13x.

36972 = 13x. divide both sides by 13, you're left with 2844.

Answer:

16

Step-by-step explanation:

[3 x (6 + 4) - 22] x 2

[3 x 10 - 22] x 2

[30 - 22] x 2

8 x 2 = 16

Answer:

16

Step-by-step explanation:

you can convert to a decimal

Answer:

6÷3/8

2/8

1/4

-------------------------

Answer:

F(x)1/3x-7

Step-by-step explanation:

f(x)=(x-21)x1/

=/x-21

The number of items Shelby will donate as a function of x is f(x)=x-21.

A function assigns the value of each element of one set to the other specific element of another set.

A function from a set X to a set Y allocates precisely one element of Y to each element of X. The set X is known as the function's domain, while the set Y is known as the function's codomain.

Given that Shelby has x number of clothing items on her bed. She will hang 21 of the items in her closet and will drop off of the remaining items to a local donation center. Therefore, we can write,

Total number of clothes = x

Number of clothes she will keep in her closet = 21

Now, the function can be written as,

Function(x) = Number of items Shelby will donate

f(x) = x - 21

Hence, the number of items Shelby will donate as a function of x is f(x)=x-21.

Learn more about Function here:

https://brainly.com/question/5245372

#SPJ2

Answer:

0.699733

Step-by-step explanation:

Given that :

Mean (m) = 8

Standard deviation (s) = 0.3

Probability that pH is between 7. 5 and 8.2

Probability of pH < 7.5

P(x < 7.5)

The standardized score (Z) :

Z = (x - m) / s

Z = (7.5 - 8) / 0.3 = - 1.6667

p(Z < - 1.6667) = 0.047787 ( Z probability calculator)

Probability of pH < 8.2

P(x < 8.2)

The standardized score (Z) :

Z = (x - m) / s

Z = (8.2 - 8) / 0.3 = 0.6667

p(Z < 0.6667) = 0.74752 ( Z probability calculator)

Hence,

p(Z < 0.6667) - p(Z < - 1.6667)

0.74752 - 0.047787 = 0.699733

Answer:

432

Step-by-step explanation:

8x9=72

72x6=432

The steps are :

[tex]x + 2y = 13 - - - (1)[/tex]

[tex] - x + y = 5 - - - (2)[/tex]

[tex](1) + (2)[/tex]

[tex]x + 2y + ( - x) + y = 13 + 5[/tex]

[tex]3y = 18[/tex]

[tex]y = 6[/tex]

[tex]substitute \: y = 6 \: into \: (2)[/tex]

[tex](2)⇒[/tex]

[tex] - x + 6 = 5[/tex]

[tex] - x = - 1[/tex]

[tex]x = 1[/tex]

Therefore, you have to insert the values into the coordinates form so the answer willl be (1 , 6).

Answer:

x^4 + 2x^3 + 3x^2 + 2x + 2 = 0

Step-by-step explanation:

The computation of the polynomial equation of the lowest degree is shown below

As we know that the complex roots would always arise in the conjucate pairs

As -i is a root, i is also a root

As  -1 + i is a root

And, -1 is also a root

Now the polynomial equation would be

(x + i)(x - i)(x + 1 - i)(x + 1 - i) = 0

(x^2 - i^2)[(x + 1)^2 - i^2] = 0

(x^2 + 1)[(x + 1)^2 + 1] = 0

(x^2 + 1)(x^2 + 2x + 2) = 0

x^4 + 2x^3 + 3x^2 + 2x + 2 = 0

Answer:

x=29

Step-by-step explanation:

the degree of a straight line is 180°

180-149

=31

x+2=31

x+2-2=31-2

x=29

Answer:

48 minutes

30/5 = 6

6 x 8 = 48

Answer: 48

Step-by-step explanation:

if Tyreke can solve:

5 problems in 8 minutes

30 problems in ? minutes

(30*8)/5=48

Answer:

The measures of the angles are 16° and 164°.

Step-by-step explanation:

Let the smaller angle be x and the larger angle be 8x+36.

Supplementary angles add up to 180°.

Small angle + Large angle = 180°

x + 8x + 36 = 180

9x + 36 = 180

9x = 180 - 36

    = 144

x = 144 ÷ 9

x = 16

8x+36 = 8(16)+36

           = 164

Given that,

y varies directly with x and y = 10 when x = 20.

To find,

The value of y when x = 15.

Solution,

[tex]y\propto x\\\\y=kx[/tex]

Put x = 20 and y = 10

[tex]k=\dfrac{y}{x}\\\\k=\dfrac{10}{20}\\\\=\dfrac{1}{2}[/tex]

Put k = 1/2 and x = 15 to find the value of y.

[tex]y=\dfrac{1}{2}\times 15\\\\=7.5[/tex]

So, the value of y is 7.5

Answer:

Peter missed five questions.

Step-by-step explanation:

Since the test has twenty-five questions, and Peter got 80% correct...

80/100 = __/25 <--What number is the numerator?

Well, to get from 100 to 25, you have to divide by 4. 100/4 = 25.

Now, what is 80/4? If you do the math, you should get 20.

25 (Total Questions) - 20 (Questions Correctly Answered) = 5 (Questions Incorrectly Answered)

Answer:

1 (240000)

2 (8000)

3(8160000)

Answer:

add 1 and subtract 1

Step-by-step explanation:

so if u add and subtract 1. take 5. 5+1 and -1 is 4 and 6

Hope this helps :D

Answer:

5

Step-by-step explanation:

Rise over run... slope formula:

[tex]\frac{y^2-y^1}{x^2-x^1}[/tex]

x=0, y=0

x=1, y=5

[tex]\frac{5-0}{1-0}=\frac{5}{1} =5[/tex]

Answer:

x = -84, y = -58

Step-by-step explanation:

2x - 3y = 6 --- Equation 1

Equation 1×5: 10x - 15y = 30 --- Equation 2

5x + 7y = -14 --- Equation 3

Equation 3×2: 10x + 14y = -28 --- Equation 4

I will eliminate 10x.

Equation 4-2:

10x - 15y - 10x + 14y = 30-(-28)

-y = 30+28

   = 58

y = -58

Substitute y  =-58 into Equation 1.

2x - 3y = 6

2x - 3(-58) = 6

2x - (-174) = 6

2x + 174 = 6

Find 2x.

2x = 6-174

    = -168

Find x.

x = -168 ÷ 2

x = -84

Answer:

It has a negative slope

Step-by-step explanation: It's going down

negative slope, because the quantity (y axis) decreases as the price (x axis) increases, creating a downward slope

Answer:

Step-by-step explanation:

Radioactive dating becouse they look how long the fossils were there

Answer:

A. 8 3/4

Step-by-step explanation:

2 1/2 x 3 1/2 =

5/2 x 7/2 =

35/4 =

8 3/4

Answer:

E is short for 10^x. The number that comes after the E is the power of 10.

So its 7.6*10^12

now that scientifically notation

For standard your gonna need to simplify that

so we know 10^12 is 1000000000000

Multiply the 7.6

7600000000000

hope I helped :)

Answer:

102.835≈103

Step-by-step explanation:

Answer: 103

Step-by-step explanation: Trust

Answer:

42 in^2

Step-by-step explanation:

the 2 triangles have a total area of 3*4*(1/2)*2 = 12 in^2

the middle rectangle has an area of 5*2.5 = 12.5 in^2

the left rectangle has an area of 3*2.5 = 7.5 in^2

the right rectangle has an area of 4*2.5 = 10 in^2

adding up all 4 gets 42 in^2

Answer:

-5.87,-33,0.5,17/25

Answer:

-33, -5.87, 0.5, 17/25.

Step-by-step explanation:

Thanks for the points!

Have a great day!

Stay safe and healthy!

Happy holiday seasons!

May I please have brainliest?

Answer:

y = 3x - 16

Step-by-step explanation:

In this question, we have to write an equation in slope-intercept form with the given information.

Slope-intercept form: y = mx + b

We already know our slope: 3

However, we don't know what are y-intercept (b) is.

To find this, plug the given information in the equation and solve for b:

-1 = 3(5) + b

-1 = 15 + b

Subtract 15 from both sides.

-16 = b

This means that our y-intercept will be -16.

Now, plug in our new information to the equation:

y = 3x - 16

The equation y = 3x - 16 will be your answer.

Answer:

y = 3x - 16

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Slope: 3

Points: (5, -1)

y = 3x + b

-1 = 3 ( 5 ) + b

-1 = 15 + b

b = -16

y = 3x - 16

Answer:

48

Step-by-step explanation:

Answer:

48

Step-by-step explanation:

First, subrat 2 from 10 bc cleo used 2 feet last week:

10-2=8

cleo has 8 feet left of ribbon.

divide 8 by 1/6

8/1/6=47.9

aprox 48

hope its right

length (l) =54

breath (b) =72

l²+b²= diagonal²..........(Pythagoras theorem) and (all sides of rectangle are 90degree)

(54)²+(72)²=diagonal²

2916+5184=diagonal²

8100=diagonal²

90= diagonal.............(taking square root)

length of diagonal is 90ft

i hope it helps

have a nice day and thanks for asking this question