What is the factored form of the expression x2 − 81

Answer: x + 3

Step-by-step explanation:

Answer:

a) [tex]\sf x = 1.1[/tex]    b) [tex]\sf x = 1.5[/tex]

solving steps:

a)

[tex]\sf 2.6 * x = 2.86[/tex]

[tex]\sf x = \frac{2.86}{2.6}[/tex]

[tex]\sf x = 1.1[/tex]

b)

[tex]\sf x * 1.2 = 1.8[/tex]

[tex]\sf x = \frac{1.8}{1.2}[/tex]

[tex]\sf x = 1.5[/tex]

Answer:

uh uhmmmm

Step-by-step explanation:

Answer:

The answer is 0.8

Step-by-step explanation:

[tex] \: \: \: \: \: \: 0. 8\\ 5 \sqrt{40} \\ - 40 \\ 0[/tex]

Thus, The answer is 0.8

-TheUnknownScientist 72

Answer:

A.

The largest percentage of students living on campus is in the 1st-year group

took the edge 2022

The False statement among all the given statement is b).

What is proportion ?

A proportion is an equation based on the equality of two ratios.

Consider statement one by one :

a) The largest percentage of students living on campus is in the 1st-year     group - True (as seen from the graph the on campus bar for 1st year is highest.)

b) As the number of years in college increases, the percentage of students living on campus increases - False ( students living on campus decreases by years passing )

c) As the number of years in college increases, the percentage of students living off campus increases - True

d) The difference between percent of students living on or off campus decreases as number of years of college increases - True

Therefore, the False statement among all the given statement is b).

Read more about Graphs here :

https://brainly.com/question/13298277

#SPJ2

For trade between countries of Brazil, Argentina, Ecuador, and Venezuela, the difference of the highest  and lowest balance of trade is $500,300,000.

Table is a way to represent the data of the two or more variable. To read the data from the table look for the value of one variable, and get the resultant value of other variable from the corresponding block.

Suppose that the countries of Brazil, Argentina, Ecuador, and Venezuela have interdependent economies.

The following table shows the imports and exports between each of these countries.

All prices given in millions of equivalent US dollars.

The trade of all the countries can be calculated as,

Brazil Argentina 4,691, Brazil Ecuador 4,791, Brazil Venezuela 1,526

[tex]B=4,691 +4,791 +1,526 =11008\rm millon[/tex]

Argentina Brazil 1,881, Argentina Ecuador 1,971, Argentina Venezuela 2,153

[tex]A=1,881+1,971+2,153 \\A=6005\rm millon[/tex]

Ecuador Brazil 3,106 Ecuador Argentina 3,672 Ecuador Venezuela 2,018

[tex]E=3,106 +3,672 +2,018\\E=8796\rm million[/tex]

Venezuela Brazil 4,535 Venezuela Argentina 1,577 Venezuela Ecuador 1,871

[tex]V=4,535 +1,577 +1,871=7983\rm million[/tex]

The highest trade is for Brazil and lowest is for Argentina. The difference between two is,

[tex]d=11008-6005\\d=5003\rm million[/tex]

The difference between the highest balance of trade and the lowest balance of trade is $500,300,000.

Learn more about the data table here;

https://brainly.com/question/15602982

Answer:

A

Step-by-step explanation:

trust me my guy/girl

Step-by-step explanation:

the general equation for a line is usually

y = ax + b

a is the slope (the inclination) of the line indicating how flat or steep (and up or down) the line goes. it is the ratio of "y coordinate change / x coordinate change" when going from one point on the line to another.

and b is the y-intercept, the y value for x=0, the point, where the line intercepts the y-axis.

the origin is the point (0, 0).

that gives us the y-intercept (b) right away, as this is therefore clearly the point, where the line intercepts the y-axis. so, b = 0.

and going from (0, 0) to (-2, 10) we see

x changes by -2 (from 0 to -2).

y changes by +10 (from 0 to 10).

so, the slope is +10/-2 = -5.

and the line equation is

y = -5x

[tex]\huge \text{Hello there! :)}[/tex]

Answer:

[tex]y=-5x[/tex]

Step-by-step explanation:

Given that the equation of a line passes through the origin and the point (-2,10), we can get the equation of the line below.

The slope-intercept form of the equation of the line is given as;

[tex]y=mx+b[/tex]

where m = slope and y = intercept

The formula for the slope is given as

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

The given points are the origin are (0,0) and (-2, 10)

[tex]m=\frac{10~-~0}{-2~-0} =\frac{10}{-2} =-5[/tex]

Now use the point-slope formula to solve for the equation of the line.

[tex](y-y^{1})=m(x-x^{1})[/tex]

For this situation, we are given the slope of -5 and (-2,10)

[tex]y-10=-5(x-(-2))[/tex]

[tex]y-10=5x-10[/tex]

[tex]Y+5x=+10-10[/tex]

[tex]y+5x=0[/tex]

[tex]y=-5x[/tex]

Therefore, the Answer is [tex]y=-5x[/tex]



[tex]\huge \text{Thanks for useing brainly!}[/tex]

[tex]\huge \text{Hope this helps!}[/tex]

Answer:

4

Step-by-step explanation:

2+2 you can take it simply as

1*2 + 1*2

or 2^2

or the (square root of 4)^2

all of these ways you get 4

Answer:

2+2=4.

How are you confused!

Hey there mate !

Check my attached image for answer.

Have a great day!

The equations are x + y = 34 and 12x + 8y = 312. The number of adults and children will be 10 and 24, respectively.

In other words, the collection of all feasible values for the parameters that satisfy the specified mathematical equation is the convenient storage of the bunch of equations.

Let 'x' and 'y' be the number of adults and children, respectively. Then the equation is given as,

x + y = 34               ...1

12x + 8y = 312        ...2

From equations 1 and 2, then we have

12x + 8(34 - x) = 312

12x + 272 - 8x = 312

4x = 40

x = 10

The value of 'y' is calculated as,

10 + y = 34

y = 24

More about the solution of the equation link is given below.

https://brainly.com/question/22613204

#SPJ2

Answer:

A=2

Step-by-step explanation:

6a+18a=6a+10a+16 (cancel equal terms)

18a=10a+16 (move variable to left)

18a-100a=16 (Collect like terms)

8a=16 (Divide both sides)

Hope This Helps :)

A = 2

Answer:

Step by step solution :

STEP

1

:

Equation at the end of step 1

(6a • (a + 3)) - (2a • (3a + 5) + 16) = 0

STEP

2

:

Equation at the end of step 2

6a • (a + 3) - (6a2 + 10a + 16) = 0

STEP

3

:

STEP

4

:

Pulling out like terms

4.1 Pull out like factors :

8a - 16 = 8 • (a - 2)

Equation at the end of step

4

:

8 • (a - 2) = 0

STEP

5

:

Equations which are never true:

5.1 Solve : 8 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

5.2 Solve : a-2 = 0

Add 2 to both sides of the equation :

a = 2

One solution was found :

a = 2

[tex] \\ [/tex]

[tex] \\ [/tex]

[tex] \\ [/tex]

⇢ x + 70° = 110°

Reason {

VOC (Vertically opposite angles).

What is VOC?

Vertically opposite angles are angles that are opposite one another at a specific vertex and are created by two straight intersecting lines}

[tex] \\ [/tex]

⇢ x = 110° - 70°

[tex] \\ [/tex]

⇢ x = 40°

[tex] \\ [/tex]

[tex] \\ [/tex]

⇢ x + 70° = 110°

put value of x

[tex] \\ [/tex]

⇢ (40°) + 70° = 110°

[tex] \\ [/tex]

⇢ 110 ° = 110°

[tex] \\ [/tex]

hence it is verified that value of x is 40°

Answer:

Step-by-step explanation:

In the question we arw given with three angles that are z

( Angle 1 , Angle 2 or Angle 3 aren't given in Question , we are just giving names for given angle . So that there's ease on explanation )

And we have asked to find th value of angle 1 i.e. x .

Solution : -

As we can see in the question that ,

Vertically Opposite Angles : -

When two lines intersect each other then the two angles formed by them at a specific point are equal .

[tex] \longmapsto x° + 70° = 110°[/tex]

Subtracting 70 from both sides :

[tex]\longmapsto x° + \cancel{70° }- \cancel{70° }= 110° - 70°[/tex]

On further calculation :

[tex] \longmapsto \purple{ \boxed{ \mathfrak{ x° = 40 {°} }}}[/tex]

Verification : -

We are verifying our answer by substituting value of x . So ,

Therefore, our value for x is correct

Answer:

4.4

Step-by-step explanation:

Answer:

20.621

Step-by-step explanation:

I used a calculator

Answer:

about 8 times longer

Step-by-step explanation:

If the distance between city A and city B is 31 miles, and it's asking how much longer the total is, I'm assuming it's asking for an equation like [tex]\frac{260}{31}[/tex] which equals roughly 8 (8.39 rounded to the nearest thousandth).

Thanks

Step-by-step explanation:

Bike =260

distance between cities=31

260/31=8.38...

Answer:

Number 1 is Given.

Number 2 is the corresponding parts theorem

AB and CB are similar

also EB and DB

Number 3 is SSA similarly theorem

Step-by-step explanation:

Answer:

4 - [tex]\sqrt{6}[/tex]

Step-by-step explanation:

Rationalise the denominator by multiplying the numerator and denominator by the conjugate of the denominator.

the conjugate of 4 + [tex]\sqrt{6}[/tex] is 4 - [tex]\sqrt{6}[/tex] , then

= [tex]\frac{10(4-\sqrt{6}) }{(4+\sqrt{6})(4-\sqrt{6}) }[/tex] ← expand denominator using FOIL

= [tex]\frac{40-10\sqrt{6} }{16-6}[/tex]

= [tex]\frac{40-10\sqrt{6} }{10}[/tex] ( divide terms on numerator/ denominator by 10 )

= 4 - [tex]\sqrt{6}[/tex]

Step-by-step explanation:

since I don't see a figure here, I have to use only the written information.

we need to remember :

tan(angle) = sin(angle) / cos(angle)

so, we have here

a/b = a/6 / cos(y) = a/(6×cos(y))

a×6×cos(y) = a×b

cos(y) = a×b / (a×6) = b/6

Answer:

See below.

Step-by-step explanation:

1a)

Angles:

Add:

Subtract:

Angle a: 132.

1b)

To get angle h above 180°, We need to add h + 164:

h = 110.

This is how to get h over 180°.

Answer:

  (a)  1/2

Step-by-step explanation:

The coordinates of the point of intersection of the terminal side of angle α with the unit circle are ...

  (x, y) = (cos(α), sin(α))

When α = 60°, the x-coordinate of the terminal point is cos(60°) = 1/2.

Answer: -7 less than or equal to x less than or equal to 5

Step-by-step explanation:

It start at -7 and end at 5 which is the x axis

Answer:

2/4=0.5

A = 0.5

Step-by-step explanation:

Answer:

1086

Step-by-step explanation:

let 4x=bigger number x=smaller number

4x+x=2715

5x=2715

5x/5=2715/5

x=543 (smaller number)

4x=4(543)=2172 (bigger number)

so

2172+543=2715

then

What is TWICE of the smaller number?

543*2=1086

Answer:

5x-y=9, y=5x+19 write both equations in same formy=5x-9 for the first and havey=5x+19 for the second. These are two parallel lines with different intercepts. They do not intersect or coincide. No solutions

and y=6x+14, 12x-2y=-28 write both equations in same formy=6x+142y=12x+28 or y=6x+14. They are the same line. The solution is all of the points on the line.

Step-by-step explanation:

I hope it will help you have a great day bye and Mark brainlist if the answer is correct I am sorry if the answer is worng

[tex]kai6417[/tex]

#carry on learning

Answer:

Step-by-step explanation:

Are these the two equations?

−5x+y=−1

−5x+y=10

=====

Put them into slope-intercept form of y = mx + b

−5x+y=−1

y = 5x - 1

−5x+y=10

y = 5x + 10

Both have a slope of 5, so they will not intersect.  This means there are no solutions.

See attached graph.

Answer:

[tex]{x,y} = {2,-3}[/tex]

Step-by-step explanation:

[tex]x - y = 5 \\\\[2] 3x - 2y = 12[/tex]    <----------- Linear equations given

Graphic Representation of the Equations: PICTURE

[tex]y + x = 5 \\-2y + 3x = 12[/tex]
Solve by Substitution :

// Solve equation [1] for the variable  [tex]x[/tex]

[tex][1] x = y + 5[/tex]

// Plug this in for variable  [tex]x[/tex]  in equation[tex][2][/tex]

[tex][2] 3*(y +5) - 2y = 12 \\ [2] y = -3[/tex]

// Solve equation [tex][2][/tex] for the variable [tex]y[/tex]

[tex][2] y = - 3[/tex]

// By now we know this much :

[tex]x = y+5 \\ y = -3[/tex]

// Use the  y  value to solve for  [tex]x[/tex]

[tex]x = (-3)+5 = 2[/tex]

Solution :

[tex]{x,y} = {2,-3}[/tex]

Answer: 54.3329

Step-by-step explanation:

Answer:

  B = 79°

Step-by-step explanation:

The sum of interior angles of a quadrilateral is 360°.

  (14x -11)° +(8x +7)° +(5x +18)° +(10x +13)° = 360°

  37x +27 = 360 . . . . . . divide by °, collect terms

  37x = 333 . . . . . . . . subtract 27

  x = 9 . . . . . . . . . . . divide by 37

The measure of angle B is ...

  B = (8x +7)° = ((8)(9) +7)°

  B = 79°

_____

Additional comment

The other angles are ...

  A = 115°, C = 63°, D = 103°

Answer:

Mean (Average):40

Median (Middle): 34

Mode (Most Common):34

Step-by-step explanation:

Is this all the numbers

Answer:

a) 80%

b) 20%

90 plus 70 divided by 200 x 100

Answer: -1

Step-by-step explanation: f(x) is another way of saying y. So when y is 3, according to the table, x is -1