5x - 4 + 2x = 3
please help

Answers

Answer 1

Answer:

x = 1

Step-by-step explanation:

First, combine like terms. Like terms are terms that share not only the same variable, but the same amount of that variable:

5x - 4 + 2x = 3

(5x + 2x) - 4 = 3

7x - 4 = 3

Isolate the variable, x. 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 stands for:

Parenthesis

Exponents (& Roots)

Multiplications

Division

Addition

Subtraction

First, add 4 to both sides of the equation:

7x - 4 (+4) = 3 (+4)

7x  = 3 + 4

7x = 7

Next, divide 7 from both sides of the equation:

(7x)/7 = (7)/7

x = 7/7 = 1

x = 1 is your answer.

~

Answer 2

Answer:

x = 1

Step-by-step explanation:

5x - 4 + 2x = 3

7x - 4 = 3           (add the Xs together)

7x = 7                (add seven to both sides)

x = 1                  (divide both sides by 7)


Related Questions

i want to know the answer to the sum of f and 6

Answers

f + 6 = ?

Well, the answer can be pretty much any number. It all depends on what number f is. f is a variable, so you can plug in any number to replace f.

For example, if f was 5, this is what the equation would look like:

5 + 6 = 11

If f was -3, this is what the equation would look like:

-3 + 6 = 3

So, again, the answer can be anything. It depends on what f is.

A, B, C and D are points on the circumference of a circle with centre O.
Angle ABC = 116°
Find the size of the angle marked x.
Give reasons for your answer.

Answers

Answer:

128degrees

Step-by-step explanation:

Using the theorem that states that the angle at the centre is twice the angle at the circumference, hence;

<D = 180 - 116

<D = 64

<x = 2(<D)

<x = 2(64)

<x = 128

Hence the measure of <x is 128degrees

.

Help! Find x, y, z
Worth 20 points

Answers

Answer:

x= 113

y= 67

z= 49

Step-by-step explanation:

a triangle equals to 180° so lets start with the triangle that has two given degrees

28 + 39 + x = 180 solve

x = 113

no we can find y by using x + y = 180 since it's a straight line

we know the value of x so 113 + y = 180. solve.

y= 67

now do the same thing we did from the start since we have two given degrees on the other triangle.

67 + 64 + z = 180

z= 49

If f(x) = 5x – 2,
find f(3)

Answers

Answer:

I think the answer is 13...

Step-by-step explanation:

f(3)=5*3-2

=13

Answer:

f(3) = 13

Step-by-step explanation:

Replace each instance of x in this function with 3:

f(3) = 5(3) - 2, or:

f(3) = 13

help me please last question!!!

A. What is the sum of all the interior angles in the kite?


B. Copy the kite and draw the diagonals. What is the measure of the angle at which the diagonals intersect?

Answers

Answer:

A. 360 degrees

B. 360 degrees all the way around but each individual one is 90 degress

Step-by-step explanation:

Answer:

Step-by-step explanation:

B: the kite's diagonals intersect each other at a 90o degree angle.

A: It should come to 360. Let's if that happens.

Take the top angle (88) first. Notice that if you draw in both diagonals,  the will form Isosceles triangles. Let's deal with the shorter diagonal first.

The two angles at the base of the shorter diagonal are equal. That's because the sides opposite them are equal.

2x +88 = 180       Subtract 88 from both sides.

2x  = 92               Divide by 2

x = 46

Now lets look at the long narrow legs of the bottom isosceles triangle.

2x + 50 = 180      Subtract 50 from both sides

2x = 130               divide by 2

x = 130 /2

x = 65

 

Now add up all the angles that make up the interior of the kite.

Total = 46 + 46 + 65 + 65 + 50 + 88

Total = 360 just as it should.

find the perimeter of the trapezoid

Answers

Answer:

Perimeter you add up all the sides.  If it is a horizontal or vertical line, you just write those values for the side lengths.  For the slanted one, I would use pythagorean theorem to solve it.

Step-by-step explanation:

If we make a right triangle using vertical and horizontal lines. We will find that a = 6, and b = 12.  Find the square root of the sum of a squared plus b squared.  That will tell you C.  Then add C to the other 3 sides and that will give you the perimeter.

5 The diagram shows a circle drawn inside a square.
The diameter of the circle is 8 cm.
Calculate the area of the shaded part of the square.
Give your answer correct to the nearest square centimetre

Answers

Answer:

where is the diagram please put it

M is between points c and q. CM=22 and CQ=39. What is MQ ?

Answers

the answer for MQ is 17

Answer:17

Step-by-step explanation:

Cm+cq=mq (m nằm giữa c và q)

Tyler was running in a 5 kilometer race.
After every 200 meters, there was an
official located along the course. How
many officials were located along the
total course of the race?

Answers

1000 meters in a kilo 5x1000=5000 and 5000/200 is 25

pls help "find the equation of the line below"

Answers

B, y= 1/3x bc its 1 up 3 left since that was the first point w no decimals
It’s B , because slope equals y2-y1/x2-x1 and you will get y=1/3x

Solve kx + 12 = 3 kx for x

Answers

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

[tex]\boxed{x = \frac{6}{k}}[/tex]

»»————- ★ ————-««  

Here’s why:

⸻⸻⸻⸻

[tex]\boxed{\text{Calculating the Answer...}}}\\\\kx+12=3kx\\------------\\\rightarrow kx+12 - 12 = 3kx-12\\\\\rightarrow kx = 3kx - 12\\\\\rightarrow kx - 3kx = 3kx - 3kx - 12\\\\\rightarrow -2kx = -12\\\\\rightarrow \frac{-2kx = -12}{-2k}\\\\\rightarrow \boxed{x=\frac{6}{k}; k\neq 0}[/tex]

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

Answer:

x = 6/k

Step-by-step explanation:

kx + 12 = 3*kx

to make like terms on same side shift kx to right hand side . when u shift positive kx to other side it becomes negative

12 = 3kx - kx

12 = 2kx

shift 2 to left hand side when u shift multilication changes to division.

12/2 = kx

6 = kx

to find x u must shift k to other side . here also same since k and x are multilied when k shifts to others side it becomes divisor.

6/k = x

What is the exact value of tan (StartFraction 5 pi Over 8 EndFraction)

Answers

9514 1404 393

Answer:

  (d)  -√((2+√2)/(2-√2))

Step-by-step explanation:

5π/8 is a 2nd-quadrant angle whose reference angle is greater than π/4. This means the tangent is negative with a magnitude greater than 1. The only reasonable choice is ...

  [tex]\displaystyle -\sqrt{\frac{2+\sqrt{2}}{2-\sqrt{2}}}[/tex]

_____

Additional comment

This simplifies to -(1+√2). Your calculator can verify the choice for you.

Answer:

D.

Step-by-step explanation:

HOPE IT HELPS MUCH UNTO YOU

Find the product. 6,372 x 75

Answers

Answer:

477900

Step-by-step explanation:

find the axis of symmetry of the parabola ​

Answers

Answer:

-4x

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation:

The axis of symmetry is the vertical line that makes a mirror image on the left and right for a vertical parabola

It goes through the vertex and is the x coordinate

x = -4

HELP PLS
simplify 4^x+1*2^2x

Answers

Answer:

2^4x

Step-by-step explanation:

4^x+2^2x

=(2)^2x+2^2x

=4^2x

=(2)2*2x

=2^4x

Answer:

4^x+2^2x

Step-by-step explanation:

There is really not much to do here but multiply 1*2^2x which stays the same

giving an answer of 4^x+2^2x

The ratio of boys to girls in the school choir is 4:7 if there are 16 boys how many girls are in the choir?

Answers

Answer:

Step-by-step explanation:

let the no of girls be x

ratio of boys to girls=4:7

4/7=16/x

do cross multiplication

7*16=x*4

112=4x

112/4=x

28=x

therefore there are 28 no of girls.

I don’t know the answer

I would really appreciate someone helping me with this one.

About 20,000 white and brown beans were mixed in a bag. You take out 400 beans randomly from the bag. Of these, 220 are brown and 180 are white. How many white beans should be in the bag from the beginning?

Answers

Answer:

9,000

Step-by-step explanation:

180/400 × 20,000 = 9,000

Answer:

9,000

Step-by-step explanation:

180÷400= 0.45

0.45×20,000= 9,000

Miguel made an international phone call for 5.6 minutes. He was charged $0.35 for each minute. Find the amount he paid.

Answers

Answer:

$1.96

Step-by-step explanation:

I just multiplied 5.6 • 0.35 to get the sum of 1.96. I hope this is accurate and helped you :)

last question for today!

hopefully..

Answers

Answer:

1/7 ÷ 5/2 = 2/35 in fraction form. 1/7 ÷ 5/2 = 0.0571 in decimal form.

Step-by-step explanation:

The Answer is 2/35

l l l l l l l l l l l l l

Thomas buys tickets for his family to see a movie.

He pays $37.50 for 2 adult tickets and 1 student ticket.
The next week he goes back with his friends and pays $35.25 for 1 adult ticket and 3 student tickets.
What system of equations can be used to find the price of an adult ticket, a, and the price of a student ticket, s ?

Answers

Answer:

37.5=2A+S, 35.25=1A+3S (You may have to rearrange it depending on directions)

Step-by-step explanation:

Okay, so we lets write that

Adult=A

Student=S

37.5=2A+S

35.25=1A+3S

This is as far as my brain power goes, so hopefully it helps you!

Heart it if I was good!

1⁄4 × 2⁄9 = ..........

Answers

Answer:

[tex] \frac{1}{18} [/tex]

Step-by-step explanation:

[tex] \frac{1}{4} \times \ \frac{2}{9} \\ \frac{1}{18} [/tex]

A dealer buys a wrist watch for $225 and spends $15 on its repairs. If he
sells the same for $300. find his profit percentage.​

Answers

Answer:

he earns a 18 percent increase

One leg of a right triangle is 1 cm longer than the other leg. The hypotenuse measures 5 cm.

Part A: Find the perimeter of the triangle.

Part B: Find the area of a triangle

Answers

Answer:

[tex]hypotenuse = 5 \: cm \\ height = 5 - 1 = 4 \: cm \\ base = \sqrt{ {5}^{2} - {4}^{2} } = \sqrt{9} = 3 \: cm[/tex]

Part A:

[tex]perimeter = 5 + 4 + 3 \\ = 12 \: cm[/tex]

Part B:

[tex]area = \frac{1}{2} \times base \times height \\ = \frac{1}{2} \times 3 \times 4 \\ = 6 \: {cm}^{2} [/tex]

What is the perimeter of a rectangle whose length is 1472 m and breadth is 1072 m ?

2472 m
4872 m
25 m
50 m

Answers

Answer:

5088 is the perimeter of the rectangle.

Answer:

5088 is the right answer

The formula of perimeter of rectangule is 2(l+b)

So, l=1472 b=1072

2(1472+1072)

2(2544)

2×2544 IS 5088

Can anyone help me with Qs 9-14 pls

Answers

Answer:

Step-by-step explanation:

angle 2 and angle 3 are linear pair

angle 1 and angle 7 are alternate exterior angle

angle 4 + angle 7=a80 degree

124 + angle 7=180

angle 7=180-124

angle 7=56 degree

angle 1 is supplementary to angle 2 ,angle 4, angle 6, angle 8 .In supplementary angle sum of two angle is always 180 degree.

angle 4 and angle 5 are supplementary angles because their sum is equal to 180 degree.

angle 4 + angle 5(being co interior angle)

3x+17+x+23=180

4x+40=180

4x=19=180-40

x=140/4

x=35

What is the length of side X? (giving brainliest and thanks to all!)

Answers

Answer:

Step-by-step explanation:

take 30 degree as reference angle

using sin rule

sin 30=opposite/hypotenuse

1/2=x/10(do cross multiplication)

2*x=10*1

x=10/2

x=5

Answer:

5

Step-by-step explanation:

The sin is the opposite cathetus divided by the hypothenuse, and the sin30° = 0.5, so let's do an equality:

sin30° = x/10

0.5 = x/10

10•0.5 = x

x = 5

Find the value of x
Please help!

Answers

Answer:

Step-by-step explanation:

We have to use Pythagorean's Theorem twice here, first to find the length of the dotted line, which I will call h, and then again to find x. First we need to find h so we can use it to find x:

[tex](2\sqrt{5})^2=4^2+h^2[/tex] and

[tex]20=16+h^2[/tex] and

[tex]4=h^2[/tex] so

h = 2. Then again:

[tex]x^2=2^2+22^2[/tex] and

[tex]x^2=4+484[/tex] and

[tex]x^2=488[/tex] so

x = 2√122

Translation that is two units to the right and 90 units down

Answers

OPTION C

(x,y) ------> (x-2, y+9)

Answer:

I think option C is the answer

What is the area?
I will mark the first answer as brainleist!!​

Answers

Answer:

Area =  [tex]44yd^2[/tex]

Step-by-step explanation:

a = 7 , b = 4 , h = 8

[tex]Area = \frac{a + b}{2 } \times height = \frac{7+4}{2} \times 8 = \frac{11}{2} \times 8 = 11 \times 4 = 44yd^2[/tex]

Complete the steps to find the value of x.

Answers

Answer:

65+11x-17 =180

11x+48 =180

11x. =180-48

11x. =132

x =12

The complete steps for the value of x are;

1. 65 + (11x - 17) = 180

2. 11x + 48 = 180

3. 11x = 132

4. x = 12

What is linear expression?

A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power.

Given that;

In the figure,

Angles 65 degree and (11x - 17) degree are supplement to each other.

Now, We use the definition of supplementary angles, for find the value of x as;

Angles 65 and (11x - 17) degree are supplement to each other.

⇒ 65 + (11x - 17) = 180

Combine like terms, we get;

⇒ 11x + (65 - 17) = 180

⇒ 11x + 48 = 180

Subtract 48 both side, we get;

⇒ 11x + 48 - 48 = 180 - 48

⇒ 11x = 132

Divide by 11, we get;

⇒ x = 12

Thus, The value of x = 12

Therefore, The complete steps for the value of x are;

1. 65 + (11x - 17) = 180

2. 11x + 48 = 180

3. 11x = 132

4. x = 12

Learn more about the supplementary angle visit:

https://brainly.com/question/98418

#SPJ5

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