2x+3=7
this equation has multiplication and addition in it. to solve this equation you need to get x by itself which means you need to get 2x by itself first. how can you do this?

Answers

Answer 1

Answer:

Subtract 3 from both sides.

Step-by-step explanation:

Doing this will leave 2x by itself.

Answer 2

Answer:

read below

Step-by-step explanation:

2x + 3 = 7

To isolate 2x, subtract 3 from both sides of the equation.

 [tex]2x + \frac{3}{-3} = \frac{7}{-3}[/tex]

3 - 3 = 0

7 - 3 = 4

[tex]2x = 4[/tex]

divide both sides by 2

[tex]x = 2[/tex]


Related Questions

Find the difference of -6-(-7)

Answers

Answer:

1

Step-by-step explanation:

When you simplify, the answer is 1.

Answer:

1

Step-by-step explanation:

50 < = x >= 1000 inequality

Answers

The solution to the given inequality is x≥50.

The given inequality is 50≤x≥1000.

What is inequality?

Inequalities are mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Now,

Move all terms not containing x from the centre section of the inequality.

Inequality Form: x≥50

Interval Notation: [50,∞)

The solution to the inequality is marked on the number line.

Therefore, the solution to the given inequality is x≥50.

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PLEASE HELP! Need help quick!

Joaquin started an online music collection with 105 songs. Each week, Joaquin purchases 4 new songs to add to his collection.

Which inequality can be used to find w, the number of weeks after starting his collection, when Joaquin will have more than 200 songs in his collection?

A- 105w+4<200
B- 105w+4>200
C- 4w+105<200
D- 4w+105>200

Answers

Answer: The answer will be D

Step-by-step explanation: I think the answer will be C because you can multiply this as I did to get the answer so its C

Solve d = rt for r
Practice problems algebra

Answers

Answer: r=d/t

Step-by-step explanation:

d=rt

d/t=rt/t

r=d/t

Answer:

[tex]r=\frac{d}{t}[/tex]

Step-by-step explanation:

[tex]d=rt[/tex]

Divide both sides by [tex]t[/tex]:

[tex]\frac{d}{t}=r[/tex]

[tex]r=\frac{d}{t}[/tex]

Is the graph increasing, decreasing, or constant?
O A. Increasing
• B. Decreasing
C. Constant

Answers

Answer:

b decreasing its korrect now

Calculate the size of angle t
State any circle theorems that you use

Answers

180-(38+ 24) = 118 (angles in a triangle add to 180)
The angle opposite this angle will be the same because vertically opposite angles are equal.
Angle OAC=38 ( angles in same segment are equal)
180-(38+118) = 24 (angles in triangle add to 180)
Answer = angle t = 24 degrees

Answer: 48

Step-by-step explanation:

The unknown angle labelled t is solved with the knowledge of the circle theorem which states that the angle subtended by an arc at the centre is twice the angle subtended at the circumference.

Using this knowledge we have that

t = 2 * 24

t = 48 degrees

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Solve Multi-Step Equations

X/5-9=1

Answers

Answer:

50

Step-by-step explanation:

[tex]\frac{x}{5}-9=1 \\ \\ \frac{x}{5}=10 \\ \\ x=50[/tex]

If a person drives 360 miles at an average of 35 miles per hour, then their distance d from the destination (in miles) is a function of the number of hours h driven.

Answers

The required function is d = 360 - 35h, 0 ≤ h ≤ 10.29.

We know that distance travelled is equalled to speed multiplied by time.

Let d be the distance from the destination.

Let d₁ be the distance travelled in h hour.

And h be the number of hours driven.

Given that the average speed is 35 miles per hour.

Therefore, we have d₁ = 35h

And the initial distance from the destination is 360 miles.

Note at time h= 0 the distance from the destination is the maximum which is 360 miles.

Therefore, we have d₁ = 35h

Distance from the destination is 360 - d₁.

⇒ d = 360 - d₁

⇒ d = 360 - 35h

Time taken to reach destination = d/v = 360/35 = 10.29 hours

Therefore the required function is d = 360 - 35h, 0 ≤ h ≤ 10.29

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Options are

A. (-3, -1)
B. (3,1)
C. (6,4)
D. (2,6)

Answers

Answer: D

Step-by-step explanation: 2,6

5 6 7 8 9 10
TIME REMAINING
10:31
What is true about the completely simplified sum of the polynomials 3x2y2 − 2xy5 and −3x2y2 + 3x4y?


The sum is a trinomial with a degree of 5.
The sum is a trinomial with a degree of 6.
The sum is a binomial with a degree of 5.
The sum is a binomial with a degree of 6.

Answers

Answer:D) the sum is a binomial with a degree of 6

Step-by-step explanation:

HELPPPPP PLEASE. PLEASE TELL ME THE BLANKS IN ORDER.

Answers

i would guess the top is divided by 2 (as shown 12 - 6)
so then it would be:
6, 5, 16, 9

The workers at Antonio's pizza shop can make 18 pizzas for every hour. They have already made 40 pizzas. Write a function rule that can be used to determine the number of pizzas at Antonio's pizza shop f(p) at p hours.​

Answers

Answer:

f(p) = 18p + 40

Step-by-step explanation:

Since they can make 18 pizzas per hour, number of pizzas made in p hours = 18p

They already have 40 pizzas

So  total number of pizzas at any time p is f(p) = 18p + 40

Farfalla kites owns 3 factories around the globe. In one year, the original factory can make 600 kites, and each of the other factories can make 900 kites. How many kites does Farfalla produce every year

Answers

Farfalla produces 2,400 kites every year.

The number of factories Farfalla owns around the globe = 3;

The number of kites produced by original factory every year = 600;

The number of kites produced by each of other 2 factories every year = 900;

Then the total kites produced by both other factories will be = 2 × 900 = 1800;

Now, the number of kites Farfalla produces every year is = 600 + 1800 = 2400;

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What is the value of a?

Answers

Answer:

15 units

Step-by-step explanation:

By using the Pythagoras Theorem,

C^2 = A^2 + B^2

Substitute in the given values,

25^2 = a^2 + 20^2

625 = a^2 + 400

625 - 400 = a^2 + 400 - 400

a^2 = 225

[tex]a = \sqrt{225} [/tex]

= 15

Hope this too helped! ^^

I'd recommend watching a video or two on the topic of Pythagoras Theorem, if this explanation isn't clear enough.

1 of 6
01:52 / 08:00
When this expression is simplified, what is my final answers
-5(2x - 5)
O 10x + 25
O 52x - 25
O-7x + 25
O-10x + 25

Answers

Answer:

-10x + 25

Step-by-step explanation:

We will distribute the - 5 in to 2x which is - 10x

Then distribute - 5 to - 5 which is 25

The cross-section of a lean-to shelter is in the shape of a triangle. The base of the
triangle is 10 feet more than twice its height. If the area of the triangle is 126
square feet, determine the length of the base and the height of the triangle in feet.
foot

Answers

The length of both the triangle's base and height in feet.

length of base = 32ft

height = 14 ft.

The triangle's base and height:

The base of a triangle can be any of its  sides. The term "base" refers to the both the side and the length (the measurement). The comparable height is really the length of a perpendicular segment from either the base to the opposing vertex.

According to the given data:

Given that perhaps the cross-section of the lean-to shelter is a triangle, its area is a triangle.

A = ¹/₂bh

b = length of base

h = height

the base of the triangle is 10 feet more than twice its height, we have that

b = 2h + 10

A = ¹/₂bh

A =  ¹/₂(2h + 10)h

A = h² + 5h

Since the area of the triangle is A = 126 ft², we have that;

h² + 5h = 126

h² + 5h - 126 = 0

h² +(14h -9h) - 126 = 0

h² +14h -9h - 126  = 0

h(h + 14) -9(h + 14) = 0

(h + 14)(h - 9) = 0

Hight cant be negative:

h = 14

Length of the base is b = 2h + 10

b = 2h + 10

b = 2(14) + 10

b = 28 + 10

b = 35 ft

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what is the median of 0,4,8,5,3,5,5,5,1

Answers

Answer:

The median is: 5

Hope this helps! <3

Answer:

Step-by-step explanation:

5

here were 34 bales of hay in the barn. Dan stacked more bales in the bar
today. There are now 64 bales of hay in the barn. How many bales did he store in the barn?

Answers

Well, you’re starting out with 34 bales of hay. So, that’s your starting point. Then you end up with 64 so that’s your ending point. The setup would be
34 + X = 64
Now to figure out x, you would subtract 34 on both sides to get
X = 64 - 34
Then, after the subtraction you’d get:
X = 30
Understand that this means Dan added 30 more bales of hay into the barn.

The function h(x) = x^2 - x - 2 / x^2 - x - 6 has a vertical asymptote at x =

A. 6
B. 3
C. -2
D. -1 and 2
E. -2 and 3

Answers

Answer:

The function h(x) =x^2-x-2/ x^2-x-6=

E.-2 and 3

Three numbers are in the ratio 2:5:7 and their lcm is 490 find the square root of the largest number

Answers

Answer:

49

Step-by-step explanation:

The ratio of three numbers = 2:5:7

Then the numbers are 2x,5x and 7x

Given that the LCM of these numbers  = 490

LCM of 2x,5x,7x is 2×5×7×x = 70x

Then, we have 70x = 490

x  = 7

Hence, the numbers are 14, 35 and 49

Largest number = 49

∴The square root of the largest number = 7

One cubic meter represents a cube shape that measures 1 meter in all three dimensions. how long is each side in centimeters?

Answers

Each side of cube is 100 cm.

What is a cube?

In Maths or in Geometry, a Cube is a solid three-dimensional figure, which has 6 square faces, 8 vertices and 12 edges. It is also said to be a regular hexahedron.

Given that,

Volume of cube = 1 cubic meter

We know that,

1 m = 100 cm

Also  volume of cube = [tex]a^{3}[/tex]

Then,

Volume of cube = 1000000 cm

                   [tex]a^{3}[/tex]  = [tex]100^{3}[/tex]

                   a = 100 cm

Hence, Each side of cube is 100 cm.

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How do you calculate the X and Y coordinates of the vertex when the equation is in standard form?

Answers

If the quadratic is y = a*x^2 + b*x + c

the coordinates of the vertex are:

x = -b/2a

y = (1/2a)*( -0.5*b^2 + c)

How to find the coordinates of the vertex?

For a quadratic equation in standard form:

y = a*x^2 + b*x + c

The x-value of the vertex is given as:

x = -b/2a

Once we get the x-value of the vertex, we can get the y-value by evaluating the quadratic equation in x = -b/2a, we will get:

y = a*(-b/2a)^2 + b*(-b/2a) + c

y = b^2/(4a) - b^2/2a + c = (1/2a)*(b^2/2  - b^2 + c)

y = (1/2a)*( -0.5*b^2 + c)

Then the coordinates of the vertex are:

x = -b/2a

y = (1/2a)*( -0.5*b^2 + c)

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Let the vector v have an initial point at (6, 3) and a terminal point at (2, 2).
Determine the components of vector V.

Answers

√17 unit is  the components of vector V .

what is components of vector?

A vector quantity has a magnitude and a direction as its two attributes. You must compare both the magnitude and the direction of two vector quantities of the same type.

The initial and terminal points of a vector v  are given by

(6, 3) and (2, 2).

Hence:

The component form of v is

V = ( 2 - 6) ( 2 - 3)

   = (  -4 , -1)

The length of the vector is

l v l = [tex]\sqrt{(-4)^{2} + ( -1)^{2} }[/tex]  = √17 unit

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A flagpole makes a 15-foot long shadow. The angle of elevation with the end of the shadow and the ground
makes a 65° angle. What is the height of the flagpole?

Answers

Answer:

12.5988 feet.

Step-by-step explanation:

Length of shadow = 15 feet.

Height of flagpole = A.

We know the angle of elevation is 40∘. Using this angle and the tangent ratio, we can find A.

Hope this helps! :)

At a certain bookstore you get a $5 dollar coupon for every four books you buy. what is the least number of books you can buy to get $15 dollars in coupons.

Answers

The answer would be 12 because 4*3=12
And 5*3=$15

4=2x+y
-6x-3y=-12
Elimination

Answers

Answer:

infinitely many solutions

Step-by-step explanation:

4=2x+y

-6x-3y=-12

First, line up the variables in the right place

4=2x+y

-12=-6x-3y

Choose the variable you want to eliminate, I will do x

Multiply everything in the first equation by 3

3(4)=(2x+y)3

-12=-6x-3y

Simplify

12=6x+3y

-12=-6x-3y

If we combined everything, it would all cancel

This means there are infinitely many solutions

To solve this problem, which should you do first? (Check all that apply)



Group of answer choices

Subtract 0.8 - 1/10

Change 40.8 to 40 8/10

Subtract 40 - 14

Change 14 1/10 to 14.1

PLEASE HELPPP

Answers

The first step to solve the equation is;

⇒ ''Change 14 1/10 to 14.1''

What is Mixed fraction?

A fraction which is represented with its quotient and remainder is called a mixed fraction.

The problem is given as,

40.8 - 14 1/10

Now, To solve the equation we have firstly change 14 1/10 as

40.8 - 14 1/10

40.8 - 14.1

Then, Subtract the numbers as,

26.7

Solution of the problem is 26.7.

So, The first step to solve the equation is;

⇒ ''Change 14 1/10 to 14.1''

Option 4 is true.

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Translate each phrase into an algebraic expression: Jame has 20 more dollars than 3 times the amount Brittany has.

Answers

x = 20+ 3y

First order equations include linear equations. In the coordinate system, the linear equations are defined for lines. A linear equation in one variable is one in which there is a homogeneous variable of degree 1 (i.e., only one variable). Multiple variables may be present in a linear equation. Linear equations in two variables, for example, are used when a linear equation contains two variables. Examples of linear equations include 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, and 3x - y + z = 3.

Jame = x

Brittany  = y

x = 20+ 3y

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Solve for x.
3x = 6x-2

x=2|3
x=3/2
x=2

Answers

Answer:

2/3

Step-by-step explanation:

in 2018, the population density in singapore was 21,400 residents per square mile. what is the population density of singapore in residents per square kilometer? (note that 1 mi

Answers

The population density of Singapore in residents per square kilometer is 8266.12 per square kilometer

What is Population Density ?

The ability to compare settlement intensities across geographical areas is made possible by population density. The number of persons per square mile of land area is the most common way to express population density in the United States.

The given parameters are

Number of people = 21400 residents

Area = 1 mi²

Convert the square mile to square kilometer

1 x 1.609² = 2.588881 Km²

Population density = Number of residents ÷ area

Population density = 21400 ÷ 2.588881

Population density = 8266.12 per square kilometer

Therefore, the population density of Singapore in residents per square kilometer is 8266.12 per square kilometer

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