Find the value of x!!!!!!

Answer:

La edad actual de Beatriz es de:

30 años

Step-by-step explanation:

Planteamiento:

5e = 4b

(e+3) + (b+3) = 60

e = edad actual de José

b = edad actual de Beatriz

Desarrollo:

de la segunda ecuación del planteamiento:

e + b + 6 = 60

e + b = 60 - 6

e + b = 54

e = 54 - b

sustituyendo este último valor en la primer ecuación del planteamiento:

5(54-b) = 4b

5*54 + 5*-b = 4b

270 - 5b = 4b

270 = 4b + 5b

270 = 9b

b = 270/9

b = 30

e = 54 - b

e = 54 - 30

e = 24

Comprobación:

5e = 4b

5*24 = 4*30 = 120

Answer:

Step-by-step explanation:

=5

Answer:x=-4

Step-by-step explanation:

move 5x to the other side by cancelling it out with -5x

that causes it to be 6-6x=30

move 6 to other side by cancelling out with -6

causes it to be -6x=24

divide by -6 to get x alone

x=24/-6

answer is -4 when reduced

The solution to the equation 6 - x = 5x + 30 is x = -4.

To solve the equation 6 - x = 5x + 30,  follow these steps:

Start by combining like terms on each side of the equation:

6 - x = 5x + 30

Rearranging the equation:

6 - 30 = 5x + x

-24 = 6x

Divide both sides of the equation by 6 to isolate the variable x:

-24/6 = 6x/6

-4 = x

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Answer:

x = 3/2 y + 3

Step-by-step explanation:

2x – 3y = 6.

Add 3y to each side

2x – 3y+3y = 3y+6.

2x = 3y+6

Divide each side by 2

2x/2 = 3y/2 + 6/2

x = 3/2 y + 3

Answer:

MC =37.5

Step-by-step explanation:

In [tex] \triangle ABC,\: \angle B = 90\degree [/tex] and [tex] BM \perp AC.[/tex]

[tex] \therefore \angle AMB = 90\degree [/tex]

By Pythagoras Theorem:

[tex]AM^2 + BM^2 = AB^2 \\

BM^2 = AB^2 - AM^2 \\ BM^2 = {10}^{2} - {2.5}^{2} \\ BM^2 = 100 -6.25 \\ \red{BM^2 = 93.75} \\ now \: by \: geometric \: mean \: theorem : \\ BM^2 =AM \times MC \\ 93.75 = 2.5\times MC \\MC = \frac{93.75}{2.5} \\ \huge \orange{ \boxed{ MC =37.5}} \\ [/tex]

Answer:

false

Step-by-step explanation:

if you simplify you get 5x+4=5x-10, which is false

Answer:

False

Step-by-step explanation:

Step 1:

4x - 3 + x + 7 = 5x - 10

Step 2:

5x - 3 + 7 = 5x - 10

Answer:

5x + 4 ≠ 5x - 10

Hope This Helps :)

Answer:

Step-by-step explanation:

[tex] - 3 {f}^{3} + \frac{1}{6} MB = D [/tex]

Multiply through by 6 to eliminate the fraction

That's

[tex] - 18 {f}^{3} + MB = 6D[/tex]

Move - 18f³ to the right side of the equation

That's

[tex]MB = 6D + 18 {f}^{3} [/tex]

Divide both sides by M to make B stand alone

That's

[tex] \frac{MB}{M} = \frac{6D + 18 {f}^{3} }{M} [/tex]

We have the final answer as

[tex]B = \frac{6D + 18 {f}^{3} }{M} [/tex]

Hope this helps you

Answer:

The statement is true

Step-by-step explanation:

Most proofs are direct proofs becaue theorums & postulates prove them true straightforwardly :)

Answer:

x=12

Step-by-step explanation:

plug in 12 to x and results will make sense

3 / (4/9)

First, let's multiply the top and bottom by 9 to get rid of the fraction in the denominator.

27 / 4 is the final answer.

Answer:

31/9

Step-by-step explanation:

3 4/9 as an improper fraction is 31/9.

We get our answer by multiplying the denominator of the mixed numbers by its whole number and adding that answer to its numerator. We get 31, and we put that over the denominator.

3 4/9

9x3=27

27+4=31

31/9

Answer:

C. 85 degrees

Step-by-step explanation:

Step 1: Set up equation

x + 57 + 96 + x = 131

Step 2: Solve for x

2x + 153 = 131

2x = -22

x = -11

Step 3: Find m∠RQU

m∠RQU = 96 + x

m∠RQU = 96 - 11

m∠RQU = 85°

Answer:

(-3,-4) is the answer for the question

Answer:

6x= 42

x= 7

Step-by-step explanation:

a) Area= length ×width

2100= 50 ×width

width= 2100 ÷50

width= 42 ft

Thus, the field is 42ft wide.

b) width of field

= x +3x +2x

= 6x

Since we know that the field is 42ft wide from (a),

Equation: 6x= 42

x= 42 ÷6

x= 7

Answer:

The absolute value of -10 is -10

Step-by-step explanation:

Absolute value describes the distance of a number on the number line from 0 without considering which direction from zero the number lies. The absolute value of a number is never negative.

...

Absolute Value  (For example)

|6| = 6 means the absolute value of 6 is 6.

Answer:

The absolute value of -10 is just 10.

Step-by-step explanation:

Anything that comes out of the absolute value brackets, which look like this |-10|, becomes positive.

For example the absolute value of  -|-10| is -10. Why? Well, because the absolute value of the -10 inside is 10, but then you have to add the negative that is outside that bracket so the answer is -10.

If the number inside the bracket is positive, is comes out the way it is, positive.

Answer:

-11

Step-by-step explanation:

assuming 4x-3 = f(x) and the other equation = g(x)

(4x-3) - (x^2 +2x)

(4(4)-3) - (4^2 +2(4)

(16-3)-(16+8)

(13)-(24)

-11

Answer:

to be parallel

slope should be equal

for first question

y=1/3X +2

comparing with y=m1x+c

slope = 1/3

similarly for second equation

y=1/3x -4

comparing with y=m2x + c

m2= 1/3

since m1=m2

lines are parallel

Answer:

The multiplication property of equality was not performed correctly.

Step-by-step explanation:

You are supposed to divide by 3 instead of multiplying by 1/3.

Answer:

now you see 3x-2=9 if x was 5 then it would 15-2 which is 13. so the person did not check the multipulcation to see if it worked out.

Step-by-step explanation: so the answer is A

Answer:

6

Step-by-step explanation:

2x=-3y+12

x=-3/2x+6

6 is zero

Answer:

x/the zero=6

Step-by-step explanation:

Make the y zero

2x+3(0)=12

Hope this helps please mark me Brainiest

then you're left with 2x=12

dived from both sides

x=6

Answer:

Answer:

Step-by-step explanation:

  CF + FB = CB

  (7x+4) +(10x-69) = (12x-25)

  5x = 40 . . . . . . . . add 65-12x

  x = 8 . . . . . . . . . . divide by 5

  CF = 7x +4 = 7(8) +4 . . . . use the x value in the expression for CF

  CF = 60

Answer:

The more time i spend reading

Step-by-step explanation:

The variable which causes a change to the variable which we intend to measure in an experiment is the independent variable, Hence, the independent variable is the amount of time spent reading.

The Independent variable in an experiment is also called the explanatory variable, which is used to tweak the value obtained for the dependent or measured variable.

In the scenario described, the measured variable is the number of book pages read which is determined by the number of time spent reading (independent variable.)

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Answer: 3,75 ( 15/4)

Step-by-step explanation:

1/3 (6y - 9) = -2y + 13

6y/3  - 9/3  = - 2y + 13

2y - 2 = - 2y + 13

2y + 2y = 13 + 2

4y = 15

y = 15/4

y = 3,75

Answer:

21 yards

Step-by-step explanation:

12 pillows x 1.75 yards= 21

21 yards of  fabric would be needed to make 12 pillows

Answer:

Im pretty sure its supposed to be 21 yards

Step-by-step explanation:

1 pillow is 1.75

12 pillows is 12×1.75=21

so she’ll need 21 yards of fabric for 12 pillows

Answer:

Isolate the x. Secondly, divide by -32 by both sides.

Step-by-step explanation:

Answer:

2x + 2

Step-by-step explanation:

Simply distribute 2 to each of the terms (you multiply)

2(x + 1)

2x + 2

[tex]\huge\boxed{Hi!}[/tex]

The Distributive Property  states that

a(b+c)=ab+ac

Let's use this to solve our math problem:

2(x+1)=2x+2

This is our final answer.

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

[tex]\huge\bold{Good\:luck!}[/tex]

[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]

Answer:

-6m-12

Step-by-step explanation:

-(2m-7)-(3+4(m+4)) =

-2m+7-(3+4m+16)=

-2m+7-(19+4m)

-2m+7-19-4m

-6m-12

OR:

-m-2 ( if you divide by 6 as a common factor)