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Answer:

x = 6.75

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and equals:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtract.

First, combine like terms. Like terms by definition is terms that have the same amount of like variables.

7x -4x + 15 = 7x - 18 + 6

(7x - 4x) + 15 = 7x + (-18 + 6)

3x + 15 = 7x + (-12)

3x + 15 = 7x - 12

Next, isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First, subtract 7x and 15 from both sides:

3x (-7x) + 15 (-15) = 7x (-7x) - 12 (-15)

3x - 7x = -12 - 15

-4x = -27

Then, isolate the variable x. Divide - 4 from both sides:

(-4x)/-4 = (-27)/-4

x = -27/-4 = 27/4 = 6.75

x = 6.75 is your answer.

~

Answer:

B because angle 3 and 6 are vertical angles, so both angles are the same degree.

Answer:

The equation have no solution.

3x - 4 = 3x + 4

-4 = 4

The statement is false

Answer:

Has no solution

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

24/12= 2

Answer: hi what up anyone wanna talk

Step-by-step explanation:  please I am so bored. hehehehehe funny period boo

Answer:

The equation of the line is;

y = -x + 2

Step-by-step explanation:

Here, we want to find the equation of a line which is perpendicular to the given line and passes through the given point.

Mathematically;

If two lines are perpendicular, then , the slope of the two lines when multiplied by each other equals -1

The given line is;

y = x + 1

let’s compare this with the standard form which is y = mx + c

In the standard form, the coefficient of x is the slope. In this case, the coefficient of x is 1 and thus this is our slope

So the slope of the second line will be;

since m1 * m2 = -1

and m1 = 1

m2 = -1/1 = -1

The slope of the second line is -1

Now to get the equation of the second line; we use the point slope form

That would be;

y-y1 = m(x-x1)

The point (x1,y1) = (1, 1) and m = -1

Thus;

y-1 = -1(x -1)

y-1 = -x + 1

y = -x + 1 + 1

y = -x + 2 or simply y = 2-x

Answer:add it up

Step-by-step explanation:then divide them all

Answer:

(0.5, 3)

Step-by-step explanation:

(x, y), so x=0.5books

and y= 0.5books * 6ounces per book = 3 ounces

so x= 0.5 and

y= 3

the correct ordered pair is (0.5, 3)

Answer:

0,0

Step-by-step explanation:

Answer:

163

Step-by-step explanation:

[tex]2*(7^{2}) +9(7)+2[/tex]

[tex]2*(49)+9(7)+2[/tex]

[tex]98+63+2[/tex]

[tex]=163[/tex]

Answer:

-1/3

Step-by-step explanation:

-1/3

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Answer:

Step-by-step explanation:

1) 11 is an odd number and prime number

2) option 3

45 = 1, 3, 5 , 15 , 9 , 45

45 = 1 * 45  

45 = 3 *15

45 = 9 * 5

3) option 2

90 = 2 * 3 * 3 * 5

Answer:

hopefully helps

Step-by-step explanation:

you have to subtract the little number from the big number

Answer:

x=-30

Step-by-step explanation:

y=-30              x=15

y=60               x=-30

the relation is y=-2x

Answer:

x = -30

Step-by-step explanation:  -30 x -2 = 60=y

x = 15 x -2

x = -30

Answer: he will be able to play 32.6 games at the arcade

Step-by-step explanation:

Answer:

32 games

Step-by-step explanation:

1) 55-14.25=40.75

2) 40.75/1.25

3) 32.6

4) The least Raleigh would be able to pay for is 32 games.

Answer:

no solution

Step-by-step explanation:

sqrt(3x+1) +7 = 5

Subtract 7 from each side

sqrt(3x+1) +7 -7= 5-7

sqrt(3x+1)  = -2

The sqrt cannot be negative so there is no solution

Answer:

Do you have a pic of the problem?

Step-by-step explanation:

Only then, can i really edit this and provide an acurate answer...

pls & thx.

Answer:

depends on the kinda person you are, if your energetic and love a pet who's not afraid to show u some love get a dog. If your more quiet or reserved but still want a cuddly fluffy friend get a cat

Answer:

4.9 * 10^-6

Step-by-step explanation:

The number being multipled by 10 to the power of whatever is between 1 and 10, so in this case 4.9. Think of it as dividing by 10 a certain amount of times, which in this case it 6. So, it is 4.9*10^-6.

Answer:

Your answer should be 8

Step-by-step explanation:

because 2^3 is also 2x2x2 and that equals 8

Answer:

-80

Step-by-step explanation:

12.06060606 IS  a rational number .

(Numbers which have no end are irrational. they have infinite number of digits.)

Answer:

13 + 12√2

Step-by-step explanation:

Not sure if there's an easier way, but here's my method:

Draw the radius lines from the center of the circle to each vertex of the octagon.  This will divide the octagon into 8 isosceles triangles, 4 big and 4 small.

Draw the height of one of the big triangles.  Define the angle between the height and the radius as A.  Similarly, draw the height of one of the small triangles.  Define the angle between the height and the radius as B.

Using trig, we can say:

sin A = 1.5 / r

sin B = 1 / r

The vertex angle of the large isosceles triangle is 2A, and the vertex angle of the small isosceles triangle is 2B.  Therefore:

4(2A) + 4(2B) = 360

A + B = 45

If we substitute into the first trig equation:

sin(45 − B) = 1.5 / r

sin 45 cos B − cos 45 sin B = 1.5 / r

1/√2 cos B − 1/√2 (1/r) = 1.5 / r

cos B − 1/r = 1.5√2 / r

cos B = (1 + 1.5√2) / r

If we substitute into the second trig equation:

sin(45 − A) = 1 / r

sin 45 cos A − cos 45 sin A = 1 / r

1/√2 cos A − 1/√2 (1.5/r) = 1 / r

cos A − 1.5/r = √2 / r

cos A = (1.5 + √2) / r

Using SAS area of a triangle, the area of the large triangle is:

Area = ½ r² sin(2A)

Area = ½ r² (2 sin A cos A)

Area = r² sin A cos A

Area = (r sin A) (r cos A)

Area = (1.5) (1.5 + √2)

Area = 2.25 + 1.5√2

Similarly, the area of a small triangle is:

Area = ½ r² sin(2B)

Area = ½ r² (2 sin B cos B)

Area = r² sin B cos B

Area = (r sin B) (r cos B)

Area = (1) (1 + 1.5√2)

Area = 1 + 1.5√2

So the total area is:

Area = 4(2.25 + 1.5√2) + 4(1 + 1.5√2)

Area = 9 + 6√2 + 4 + 6√2

Area = 13 + 12√2

Answer:

I believe its $1.33

Step-by-step explanation:

$3.99 divided by 3 is $1.33

Answer:

x = 9

Step-by-step explanation:

23x + 24*8 + 25*1 + 26*6 = 580

23x + 192 + 25 + 156 = 580

23x + 373 = 580

23x = 580 - 373

23x = 207

x = 207/23

x = 9

Answer:

1/4

Step-by-step explanation:

Hopefully this helps you :)

pls mark brainlest ;)

Answer:

Find the inverse f-1(x) for the given function f(x)=2x-5

Step-by-step explanation:

To find the inverse, interchange the variables and solve for  y

 f ^− 1 ( x ) = x /2 + 5/2