I am really bad at Math, does anyone know how many solutions are in these 1. 2x - x + 7 = x +3 + 4 2. -2(x + 1) = -2x + 5 3. 4x + 2x + 2 = 3x - 7 4. 4(2x + 1) = 5x + 3x + 9 5. X + 2x + 7 = 3x - 7

Answers

Answer 1

Step-by-step explanation:

1. 2x - x + 7 = x +3 + 4

Collecting like terms;

2x - x - x = 3 + 4 - 7

2x = 0

x = 0

2. -2(x + 1) = -2x + 5

Expanding the bracket;

- 2x - 2= - 2x + 5

Collecting like terms;

- 2x + 2x = 5  + 2

0 = 7

It has no solution

3. 4x + 2x + 2 = 3x - 7

Collecting like terms;

4x + 2x + 3x = - 7 -2

9x = -9

x = -1

4. 4(2x + 1) = 5x + 3x + 9

Expanding the bracket

8x + 4 = 5x + 3x + 9

Collecting like terms

8x - 5x - 3x = 9 - 4

0 = 5

It has no solution

5. X + 2x + 7 = 3x - 7

Collecting like terms

x + 2x - 3x = - 7 - 7

0 = - 14

It has no solution


Related Questions

What is the most basic function called

Answers

Answer:

absolute volume im pretty sure

Answer:

Step-by-step explanation:

Linear Function: f(x) = mx + b.

Square Function: f(x) = x2

Cube Function: f(x) = x3

Square Root Function: f(x) = √x.

Absolute Value Function: f(x) = |x|

Reciprocal Function. f(x) = 1/x.

can you help look at the photo above​

Answers

Answer:

A

Step-by-step explanation:

3-3 is 0

0 is greater than -7

Which function is most likely graphed on the coordinate plane below?​

Answers

Answer:

2nd one

Step-by-step explanation:

PLEASE HELP!!!!!!!!!!!

Answers

The last option is the correct one

Answer:

D

Step-by-step explanation:

what is the volume of a cylinder with a radius of 9 inches and a height of 2 inches​

Answers

Answer:

508.94

Step-by-step explanation:

Which equation has a slope of -4 and a y-intercept of 7.

Answers

y=-4x+7

the -4 is the slope and the 7 is the y-intercept

The median of 50 50 54 56 60 62 63 64 79 72 72

Answers

Answer:

62

Step-by-step explanation:

50,50,54,56,60,62,63,64,79,72,72,

median ids the number at the center

50,50,54,56,60(62)63,64,79,72,72

You pay $1.56 for 4 pounds of bananas. Write and solve an equation to find out how much it costs for 1 pound of bananas.

Answers

Answer:

1.56 / 4 = 0.39

1 Pound of bananas cost $0.39

Step-by-step explanation:

Answer:

just divide 1.56 by 4

Step-by-step explanation:


[tex] - 18y + 7 = - 29[/tex]
can someone like help me​

Answers

y=1 have a great say

I really need some one to solve this please!!!

Answers

Answer:x=10/3

Step-by-step explanation:

Answer:

x=10

Step-by-step explanation:

Hey There!

Our goal to solve this problem is to get the variable on one side and the constant on the other using inverse operations

[tex]\frac{2x-5}{3} =5[/tex]

step 1 multiply each side by 3

3x5=15

3x/3 cancels out

now we have 2x-5=15

step 2 add 5 to each side

-5+5 cancels out

15+5=20

now we have

20=2x

step 3 divide each side by 2

20/2=10

we're left with x=10

What is the mass in kg of a
solid metal cuboid with
dimensions 4cm, 5cm and
3cm and a density of
20g/cm3

Answers

Answer:

work out the area which is 4x5x3 this being 60 then divide this by 20 to get 3

The answer is 3kg

Answer:

[tex]density = mass \div volume \\ 20 = x \div 4 \times 3 \times 5 \\ 20 = x \div 60 \\ 20 \times 60 = x \\ x = 1200 \\ 1200 \div 1000 = 1.2kg[/tex]

-4 (m - 5) - 3 (m + 6)

Answers

Answer:

= −7m+2

Step-by-step explanation:

Answer:

-7m+2

Step-by-step explanation:

-4(m-5)-3(m+6)

-4m+20-3m-18

-4m-3m+20-18

-7m+2

HELP ASAP ASAP EXTRA POINTS

Answers

Answer:

-4/2 since it's a negative slope

Step-by-step explanation:

4 1/4 - 5/6 giving ur answer as a Mixed Number

Answers

Answer:

3.41666666667 or 341666666667/100000000000 Sorry if this isn't a mixed number, I remember doing it on a calculator and it simplified it to a mixed number and it didn't but hope this helps

Step-by-step explanation:

The solution of the expression will be 3⁵/₁₂.

What is an expression?

Expression in maths is defined as the relation of numbers variables and functions by using mathematical signs like addition, subtraction, multiplication and division.

Given that the expression is 4¹/₄ - 5/6. The expression will be simplified as below,

E = 4¹/₄ - 5/6

First, simplify the mixed fraction part,

E = (17 / 4) - (5 / 6)

Solve the above equation by taking an LCM,

E = ( 102 - 20 ) / 24

E = 41 / 12

E = 3⁵/₁₂

Therefore, the expression after simplification will give the value 3⁵/₁₂.

To know more about an expression follow

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Kyle has a storage box that is 2 ft. Long, 3 ft. High, and has a volume of 12 ft. 3 12 ft.3. Myla has a storage box that is 4 ft. High, 2 ft. Long, and has a volume of 16 ft. 3 16 ft.3. What are the widths of Kyle and Myla's boxes? Explain how you know.

Answers

Answer: The widths of Kyle and Myla's boxes is the same as 2 ft.

Step-by-step explanation:

Formula : Volume of cuboidal box = length x width x height

[tex]width=\dfrac{Volume}{length\times height}[/tex]

Given: Kyle has a storage box that is 2 ft. Long, 3 ft. High, and has a volume of 12 ft³ .

[tex]width=\dfrac{12}{2\times3}=2\ ft.[/tex]

Myla has a storage box that is 4 ft. High, 2 ft. Long, and has a volume of 16 ft³.

[tex]width=\dfrac{16}{4\times2}=2\ ft.[/tex]

Hence, the widths of Kyle and Myla's boxes is the same as 2 ft.

Answer:

Step-by-step explanation:

Volume of cuboidal box = length x width x height

What is the longest flagpole (in whole feet) that could be shipped in a box that measures 3 ft by 3 ft by 14 ft?

Answers

Answer:

14feet

Step-by-step explanation:

The length of the longest flagpole is the length of diagonal r

Get s first using the pythagoras theorem;

s^2 = 14^2 - 3^2

s^2 = 196 - 9

s^2 = 187

s = √187

s = 13.67

Similarly

s^2 + 3^2 = r^2

Since s^2 = 187

187 + 9 = r^2

r^2 = 196

r = √196

r = 14ft

Hence the longest flagpole (in whole feet) that could be shipped in a box that measures 3 ft by 3 ft by 14 ft is 14feet

A recipe for lemonade calls for 2 cups of sugar for every 8 cups of water. How much sugar is needed for each cup of water. A. 1/8 cup of sugar to 1 cup of water B. 1/6 cup of sugar to 1 cup of water C. 1/4 cup of sugar to 1 cup of water D. 4 cup of sugar to 1 cup of water

Answers

Answer:

1/4 cup of sugar to 1 cup of water

Step-by-step explanation:

you divide 2 by 8 and get 0.25 and that is 1/4.

Hope this helps!!

I need help with this question pls​

Answers

Answer:

[tex]\displaystyle x \approx 8.6[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA[Right Triangles Only] cosθ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Identify

Angle θ = 16°

Adjacent Leg = 8.3

Hypotenuse = x

Step 2: Solve for x

Substitute in variables [cosine]:                                                                      [tex]\displaystyle cos16^\circ = \frac{8.3}{x}[/tex][Multiplication Property of Equality] Cross-multiply:                                     [tex]\displaystyle x = \frac{8.3}{cos16^\circ}[/tex]Evaluate:                                                                                                          [tex]\displaystyle x = 8.63449[/tex]Round:                                                                                                              [tex]\displaystyle x \approx 8.6[/tex]

ty
What is the equation of the line that is parallel to the
given line and passes through the point (-2, 2)?
5
4
2
1
O y = -x+4
O y=-x+ 13
O y = -5x + 4
O y = -5x + 12
-2
5
(0, -3)
(-5, 4)

Answers

Answer:

O y=_5x+4 it is equation the line that is parallel

The equation of line passes through the point (-2, 2) will be;

⇒ y = 1/5x - 12/5

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

Two points on the line are (- 5, -4) and (0, -3).

Now,

Since, The equation of line passes through the points (- 5, -4) and (0, -3).

So, We need to find the slope of the line.

Hence, Slope of the line is,

m = (y₂ - y₁) / (x₂ - x₁)

m = (- 3 - (-4)) / (0 - (-5))

m = 1 / 5

Hence, The slope of parallel line = 1/5

Thus, The equation of line with slope 1/5 and passes through the point (-2, 2) is,

⇒ y - (-2) = 1/5 (x - 2)

⇒ y + 2 = 1/5x - 2/5

⇒ y = 1/5x - 2/5 - 2

⇒ y = 1/5x - 12/5

Therefore, The equation of line passes through the point (-2, 2) will be;

⇒ y = 1/5x - 12/5

Learn more about the equation of line visit:

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Please help me with this!!

Answers

Answer:

m<5 = 115

Step-by-step explanation:

This is vertical angle so, 115-50=65

So measure angle 1 is 65 degrees.

These are corresponding angles so 50+65=115

Therefore, m<5 = 115

Plsss help it also detects if it’s right or wrong

Answers

Answer:

3/8

Step-by-step explanation:

Looking at the bottom row, there are 8 possible outcomes

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT

There are 3 that have exactly 2 heads HHT, HTH, THH,

That means the probability is

P( exactly 2 heads) = number outcomes with exactly 2 heads/total outcomes

                                 =3/8


Lin says that a snack machine is like a function because it outputs an item for each code input.

Answers

Don’t click the link.

Jack's bank account had a balance of -$25.48 last week. His paycheck of $393.69 was deposited this week. If there have been no
other transactions, which of the following is true?
OA. Jack's current account balance is -$368.21.
OB. Jack's current account balance is $368.21.
Ос. .
Jack's current account balance is $419.17.
OD
Jack's current account balance is -$419.17.

Answers

Answer:

B

Step-by-step explanation:

because -25.48 - 393.69 is?

B) jacks current account balance is 368.21

Help please and thank you

Answers

Answer:

Step-by-step explanation:

4/5

1/2

Answer:

3) 4:5  4) 1:2

Step-by-step explanation:

We just have to simplify the fraction of the smaller side of the smaller figure over the larger side.

For number 3) 12/15 = 3*4 / 3* 5 = 4/5

For number 4) 7/14 = 8/16 = 1/2

help please fast its math and I have an 11:59 deadline​

Answers

Step-by-step explanation:

1.y=x/5 +3p

y= x/5+ 3p/1

LCM=5

y= x+ 15p/5

5y=x + 15p

5y-15p = x

x=5y-15p

what does quadratic mean?

Answers

involving the second and no higher power of an unknown quantity or variable.
an equation in which the highest power of an unknown quantity is a square

HELP NEEDED
Graph the linear equation using Slope-intercept form.
1
y = -x - 3
4
Begin with b.
• Move with m.

Answers

Answer:

Step-by-step explanation:

You would put b at -3 (put a dot there)

Move with m by going up 1, and then to the right 4 (the next dot should be at --2, 4)

connect both points with a straight line

The side lengths 9, 13, and 17 form a triangle.


TrueFalse

Answers

Answer:

Yes.  As long as the sum of two sides is greater than the third side a triangle can be formed.

Step-by-step explanation:

Find the distance between points(-8,-2), (8,3)

Answers

8,2
3,8

just reverse! :)

can u please help me with this??

Answers

Answer:

tor buda igffv ety our acc oohv

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