the sum of twice a number and 5 is at most 3 less than the number

Answers

Answer 1

2x + 5 ≤ x - 3

We can treat this like a usual algebraic equation.

Subtract x from both sides.

x + 5 ≤ -3

Subtract 5 from both sides.

x ≤ -8

Thus, x is less than or equal to the quantity -8.

We can test this by plugging in two values into the original inequality: a number greater than -8, and a number less than -8.

2x + 5 ≤ x - 3

We'll use 2 first.

2 * 2 + 5 ≤ 2 - 3

9 ≤ -1 × this is incorrect

Now  we'll use -10

2x + 5 ≤ x - 3

2 * -10 + 5 ≤ -10 - 3

-15 ≤ -13 √ this is correct



Answer 2

Mathematics defines an algebraic equation as a statement in which a relationship between two expressions is established through an equals sign.

For the given question the equation will be:

            [tex]\rm 2x + 5 = x - 3[/tex]

On solving the above equation, x can be defined as -8.

Solution of Algebraic Equation.

Let the number be x.

According to the question:

Twice of x + 5 =  x - 3

This forms a quadratic equation:

             [tex]\rm 2x + 5 = x - 3[/tex]

The equation  [tex]\rm 2x + 5 = x + 3[/tex] can be solved as follows:

          [tex]\begin{aligned} \rm 2x + 5 &= x - 3\\\\ 2x - x &= -3 - 5\\\\x &= -8 \end[/tex]

Therefore the number is -8.

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Related Questions

What were the two whole numbers?

Answers

Answer:

Ah, this is an example of the distribution property, as you would need to distribute the 5 to the 8 and 3. Here's the step-by-step process:

[tex]5(8+3)[/tex]

Let's first multiply the 5 and 8

[tex]5(8)=40[/tex]

Now, the 5 and 3

[tex]5(3)=15[/tex]

We now have two whole numbers, and therefore our answer:

40 + 15

The city of Minerva pays 916$ per year for health insurance for each of it's 72 municipal employees. What is the total cost that the city pays per year ?

Answers

So, this is a rate per person * number of people.


So,

$916 per person * 72 people = 65,952

The city pays $916 per year for health insurance for;

each of 72 municipal employees

So;

1 municipal employee gets ⇒ $916

72 employees get ⇒ How much?

Cross multiplying gives:

72/1 × $916 = $65,952

The total cost the city pays per year is $65,952.

Margo borrows $400 agreeing to pay it back with 5% annual interest after 6 months. How much interest will she pay?

Answers

She will pay $20 in interest

20 dollars of interest would be payed

Hope this helps

50 points
In this figure, the horizontal lines are parallel, and AB=BC=CD. Find KL and FF. I need an explanation and all work shown.

Answers

AB=BC=CD together with the fact the horizontal lines are parallel implies that HG=GF=FE (can be proved using triangle similarity).  So knowing FE=5.1 implies FG=5.1

Since we now know that the horizontal lines are equidistant, it means that ML=LK=KJ (same argument as above). Therefore KL=7.6.

Let me know if you have questions!

Since the horizontal lines are parallel, and AB=BC=CD, the lengths of KL and FG are: D. KL = 7.6; FG = 5.1.

What are parallel lines?

In Mathematics and Euclidean Geometry, parallel lines are two lines that are always the same distance apart and never meet.

This ultimately implies that, parallel lines are always coplanar lines and straight lines that have an equal distance between each other.

By critically observing the figure, we can logically deduce that the horizontal lines are all parallel to each other with two transversals;

AB = BC = CD (Given)

AB = LM = 7.6

BC = KL = 7.6

CD = JK = 7.6

AB = GH = 5.1

BC = FG = 5.1

CD = EF = 5.1

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Vertex of y=2x^2-16x+8

Answers

First you use the formula (-b/2a) to find the axis of symmetry(or the x value) and then you plug that into the equation to find the y value.

a = 2

b= -16

16/2(2)=16/4=4

(4, x )  so we have the x-value and now we plug 4 into the original equation

y=2(4)^2-16(4)+8

y=2(16)-64+8

y=32-64+8

y=-24

So the vertex is at (4,-24)

An alligator population a nature preserve in the Everglades decreases by 60 alligators over five years. What is this mean yearly change in the alligator population

Answers

The answer is 12 alligators per year, how I got my answer.

I divided 60÷5=12.

I hope this helps.

is 17/31 greater than 19/14

Answers

Answer:

No

Step-by-step explanation:

Put both in your calculator. Do it in this order.

17

÷

31

=

0.5484

=========

Now do the next one

18

÷

14

=

1.357

19/14 > 17/31

To make 6 glasses of lemonade Karla uses 5.5 cups of water how much water should she use for 10 cups

Answers

.92 cups of water per glasses of lemonade. So for 10 cups of lemonade, Karla would have to use 9.2 cups of water.

Find the measure of z.

A. 80°
B. 83 °
C. 70 °
D. 87 °

Answers

The answer to the question is c. 70°

Kyle is using the general form of a quadratic equation to derive the quadratic formula. He reaches the step in his proof that states x2 + b a x = - c a . Which term must he add to complete the square?

Answers

Answer:

[tex] \dfrac{b^2}{4a^2} [/tex]

Step-by-step explanation:

There are some fractions there that are not visible.

Here it is with the fractions in place.

[tex] x^2 + \dfrac{b}{a}x = -\dfrac{c}{a} [/tex]

To complete the square, take half of the x-term coefficient, and square it.

The x-term coefficient is [tex] \dfrac{b}{a} [/tex].

Take half of it, or [tex] \dfrac{b}{2a} [/tex].

Now square it: [tex] \dfrac{b^2}{4a^2} [/tex].

That is what you must add to complete the square.

Answer:

(b/2a)^2

Step-by-step explanation:

usatestprep

Find the values of y2.

y2=169

please i need help stuck on it :)

Answers

assuming you mean y² = 169

then taking the square root of both sides gives

y = [tex]\sqrt{169}[/tex] = ± 13

since 13² = 169 and (- 13)² = 169


The values of y are -13 and 13 in the equation y^2 = 169.

It is given that the expression [tex]\rm y^2 = 169[/tex]

It is required to find the values of y.

What is a quadratic equation?

Any equation of the form [tex]\rm ax^2+bx+c=0[/tex] where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

We have a quadratic equation:

[tex]\rm y^2 = 169[/tex]

[tex]\rm y^2-169=0[/tex]   (subtract 169 on both sides)

[tex]\rm y^2- 13^2=0[/tex]           (169 = 13²)

(y+13)(y-13) = 0      (a²-b² = (a+b)(a-b))

Taking  (y+13) = 0 ⇒ y = -13

Taking (y-13) = 0  ⇒ y = 13

Thus, the values of y are -13 and 13 in the equation y^2 = 169.

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A rental car cost a one time fee of $30 and then an additional $15 for each day it is rented. If the Webb family’s total bill was $135, how many days did they rent the car?

Answers

Answer:

7 days because 15 times 7 =105 and if you add 30 to that you get 135.

Step-by-step explanation:


The Webb family rented the car for 7 days.

To find the number of days the Webb family rented the car, we can set up an equation using the given information. Let's say the number of days the car was rented is x. The total cost would then be $30 (one-time fee) plus $15 (daily fee) multiplied by x. This can be represented as the equation: 30 + 15x = 135. To solve for x, we need to isolate it by subtracting 30 from both sides: 15x = 105. Then, divide both sides by 15: x = 7. Therefore, the Webb family rented the car for 7 days.

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HELP....PLZ thanks!!!!!!!!!!!!

Answers

Answer:

64mph

56mph

higher

64mph


56mph


higher

It's too short. Write at least 20 characters to explain it well.


Marcus needs 3 1/10 m of blue fabric and 1 1/5 m of yellow fabric to make his costume

How much more blue fabric than yellow fabric does Marcus need?

Express your answer as a mixed number in simplest form

Answers

Turn both into decimals or fractions with a common denominator: 3.1 OR 3 1/10 and 1.2 OR 1 2/10

Now you need to subtract : 3 1/10 - 1 2/10 = 1 9/10 OR 1.9

In mixed number form : 1 9/10

(3a^3b^-2c^0d)^3/6a^3b^-8c*b^2d

Answers

Answer:

[tex]4.5a^6d^2[/tex]

Step-by-step explanation:

Use:

[tex](ab)^n=a^nb^n\\\\(a^n)^m=a^{nm}\\\\a^n\cdot a^m=a^{n+m}\\\\\dfrac{a^n}{a^m}=a^{n-m}\\\\a^0=1\ for\ a\neq0[/tex]

----------------------------------------------------------------------------------

[tex]\dfrac{(3a^3b^{-2}c^0d)^3}{6a^3b^{-8}c\cdot b^2d}=\dfrac{3^3(a^3)^3(b^{-2})^3(1^3)d^3}{6a^3b^{-8+2}d}=\dfrac{27a^9b^{-6}d^3}{6a^3b^{-6}d}\\\\=\dfrac{27}{6}a^{9-3}b^{-6-(-6)}d^{3-1}=4.5a^6b^0d^2=4.5a^6d^2[/tex]

(5,-7) (5,3) finding slope using formula.

Answers

m = (y2 -y1)/ (x2-x1)

m = (3-(-7))

       --------

       5-5

 The slope is undefined since the denominator is zero

Eva sees a dolphin 3.2 meters below sea level and a bird 47/10 meters above sea level.

Which of the following expressions represents the vertical distance between the dolphin and the bird?

47/10-(3.2)
3.2-47/10
none of the above

Answers

Answer:

[tex]A[/tex], | [tex]\frac{47}{10} -(3.2)[/tex] |

Final answer:

To find the vertical distance between a dolphin below sea level and a bird above sea level, the absolute values of their distances from sea level must be added, resulting in a distance of 4.7 + 3.2 meters, which means the correct answer is 'none of the above'.

Explanation:

The question is asking to calculate the vertical distance between a dolphin below sea level and a bird above sea level. To find this vertical distance, you would add the absolute values of their distances from sea level. Since sea level is our reference point, and the dolphin is at 3.2 meters below it while the bird is at 47/10 or 4.7 meters above, the expression to represent the vertical distance between the dolphin and the bird would be:

4.7 + 3.2

The correct answer is none of the above since neither of the provided expressions represents the sum of the two distances. Instead, each expression attempts to subtract one distance from the other, which is not the correct method for finding the vertical distance between two objects on opposite sides of the sea level reference point.

mikaela travels 15 blocks on skateboard in 5 minute.at this speed,how many blocks can she travel on her skateboard in 12 minutes?

Answers

Answer:

She can travel 36 blocks in 12 minutes.

Step-by-step explanation:

First you must find out how many blocks he can skateboard in 1 minute.

15/5

He can skateboard 3 blocks in 1 minute.

The equation I will use is b * m

b = blocks

m = minutes

so in this situation you must multiply 3 * 12 to get your answer.

which is b = 36


Answer:

She can travel 36 blocks in 12 minutes.

Step-by-step explanation:

First you must find out how many blocks he can skateboard in 1 minute.

15/5

He can skateboard 3 blocks in 1 minute.

The equation I will use is b * m

b = blocks

m = minutes

so in this situation you must multiply 3 * 12 to get your answer.

which is b = 36

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Step-by-step explanation:

:)

Find the area. Use π = 3.14.

Answers

d.

5.3066 m2


that is your answer

Answers . Jzhidkdjdisnsjkdjdkshxkdbdksnxn

Answers

1 is 1: 4 equals 2:8

All angles in the diagram are measured to the nearest degree.

Work out the upper bound and lower bound of angle x.

Answers

Answer:

=59+108+81+x=360

=248+x=360

=112

Considering the nearest-degree measurements, angle x falls between 58.5 and 108.5 degrees, determined by adjusting the upper and lower bounds based on the provided angles in the diagram.

Given that the angles in the diagram are measured to the nearest degree, we can determine the upper and lower bounds of angle x using the provided angles: 59 degrees, 108 degrees, and 81 degrees.

To find the upper bound of angle x, we select the largest angle, which is 108 degrees. The upper bound is obtained by adding 0.5 degrees to this angle (since measurements are to the nearest degree). Therefore, the upper bound of angle x is 108 + 0.5 = 108.5 degrees.

For the lower bound, we choose the smallest angle, which is 59 degrees. The lower bound is found by subtracting 0.5 degrees from this angle. Thus, the lower bound of angle x is 59 - 0.5 = 58.5 degrees.

In conclusion, the measure of angle x lies between the lower bound of 58.5 degrees and the upper bound of 108.5 degrees.

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HELP ME -(6x+7)+8=19?

Answers

Hey there,

The answer your looking for is X = -3



- Ari -

The answer is x = -3 because:

-(6x+7)+8=19

-6x-7+8=19

-6x+1=19

-6x+18

x=-3

Use the interactive ruler to measure the distance from the center of dilation, C, to the image and pre-image. The distance from point C to point A is units. The distance from point C to point A' is units. The distance from point C to point A' is the distance from point C to point A.

Answers

Answer:

4,2, and one-half in the answer!!!! :)

Step-by-step explanation:

Having used the interactive ruler, the distance from the center of the dilation to the image and pre-image is 4 Units.

What is an Interactive ruler?

Also known as an Interactive Teaching Program (ITP) ruler, this virtual tool (which displays on the computer screen) is used to measure the lines and sides of a shape.

What is the distance from point C to point A is units?

Having used the interactive ruler, the distance from point C to point A is units is 2 units.

Also, The distance from point C to point A' is 1.5 Units.

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leons older brother is 4and 3/4 feet tall. Leon is 1/3 foot shorter than his brother. How tall is leon

Answers

Answer: [tex]4\frac{5}{12}\ feet[/tex]

Step-by-step explanation:

The height of Leon's older brother = [tex]4\frac{3}{4}[/tex] feet

[tex]=\frac{16+3}{4}=\frac{19}{4}[/tex] feet

Since, Leon is 1/3 foot shorter than his brother.

Then, the height of Leon = [tex]\frac{19}{4}-\frac{1}{3}[/tex]

First we need to make them like fractions by multiplying 3 on the numerator and denominator of the first fraction and 4 on the numerator and denominator of the second fraction.

Then, the height of Leon = [tex]\frac{57}{12}-\frac{4}{12}[/tex]

[tex]=\frac{57-4}{12}\\=\frac{53}{12}=4\frac{5}{12}[/tex] feet

Hence, The  height of Leon =[tex]4\frac{5}{12}\ feet[/tex]

Hector is 5 years less than double Mary's age Mary is 12 years old how many years old is Hector

Answers

19 years old double her age is 24 then you subtract 5. 19



Hector is 19 years old.

12 x 2 = 24 - 5 = 19

Work out the size of angle y.

Answers

2x+16=3x-12

16+12=3x-2x

28=x

now,since this is a fig of 2 parallel line with a bisector then line EF =180 degrees.

therefore,3x+12+y=180

3(28)+12+y=180   [we already found the value of x]

96+y=180

y=180-96

y=84.

what is the resulting polynomial when 3x+7 is multiplied by 2x-6

Answers

(3x+7)(2x-6)= 6x squared -4x-42

6x^2-4x-42

The product of the expressions (3x + 7) and (2x - 6) will be 6x² - 4x - 42.

What is polynomial?

A polynomial expression is an algebraic expression with variables and coefficients. Unknown variables are what they're termed.

The expressions are given below.

(3x + 7) and (2x - 6)

Then the product of the expressions (3x + 7) and (2x - 6) will be

(3x + 7) (2x - 6) = 6x² + 14x - 18x - 42

(3x + 7) (2x - 6) = 6x² - 4x - 42

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What is 9,032,504.75 in word form?

Answers

Nine million thirty two thousand five hundred four and seventy five hundredths.

nine million thirty-two thousand five hundred four and seventy five tenths. :)

what is the simplified form of the following expression? Assume x is greater than or equal to 0 and y is greater than or equal to 0. 2(4sq root16x)-2(4sq root 2y)+34 sq root 81x)-4(4sq root32y)

Answers

The simplified expression is [tex]\(338\sqrt{x} - 40\sqrt{2y}\),[/tex] combining like terms of square roots of variables.

To simplify the given expression, let's simplify each term separately:

1. [tex]\(2 \cdot 4\sqrt{16x}\)[/tex]

  - Simplify \(4\sqrt{16x}\): Since [tex]\(16x = (4 \cdot 4) \cdot x = 4^2 \cdot x\), the square root of \(16x\) is \(4\sqrt{x}\).[/tex]

  - Substitute this result into the expression:[tex]\(2 \cdot 4 \cdot 4\sqrt{x} = 32\sqrt{x}\).[/tex]

2. [tex]\(2 \cdot 4\sqrt{2y}\) - Simplify \(4\sqrt{2y}\): Since \(2y\) doesn't have a perfect square factor, we leave it as is. - Substitute this result into the expression: \(2 \cdot 4\sqrt{2y} = 8\sqrt{2y}\).[/tex]

3. [tex]\(34\sqrt{81x}\) - Simplify \(\sqrt{81x}\): Since \(81x = (9 \cdot 9) \cdot x = 9^2 \cdot x\), the square root of \(81x\) is \(9\sqrt{x}\).[/tex]

  - Substitute this result into the expression: [tex]\(34 \cdot 9\sqrt{x} = 306\sqrt{x}\).[/tex]

4. [tex]\(4 \cdot 4\sqrt{32y}\) - Simplify \(4\sqrt{32y}\): Since \(32y = (4 \cdot 8) \cdot y = 4^2 \cdot 8y\), the square root of \(32y\) is \(4\sqrt{8y}\). - Rewrite \(\sqrt{8y}\) as \(2\sqrt{2y}\) since \(8 = 4 \cdot 2\). - Substitute this result into the expression: \(4 \cdot 4 \cdot 2\sqrt{2y} = 32\sqrt{2y}\).[/tex]

Now, combine all the simplified terms:

[tex]\[ 32\sqrt{x} - 8\sqrt{2y} + 306\sqrt{x} - 32\sqrt{2y} \][/tex]

Combine like terms:

[tex]\[ (32\sqrt{x} + 306\sqrt{x}) - (8\sqrt{2y} + 32\sqrt{2y}) \][/tex]

[tex]\[ 338\sqrt{x} - 40\sqrt{2y} \][/tex]

Therefore, the simplified form of the expression is [tex]\(338\sqrt{x} - 40\sqrt{2y}\).[/tex]

The simplified form of the expression is 338√x - 72√2y, after applying the square roots to known perfect squares and combining like terms.

To simplify the expression, first apply the square root to known perfect squares and distribute the multiplication:

2(4√16x) becomes 2(4×4√x) because √16 = 4, so this part simplifies to 32√x.

2(4√2y) stays as is because √2y cannot be simplified further without more information about y, so this part is 8√2y.

34√81x can be simplified because √81 = 9, resulting in 34×9√x, which is 306√x.

4(4√32y) becomes 4(4×√16×√2y) because √32 = √16×√2, so this part simplifies to 64√2y.

Combining all the parts, we subtract the like terms:

32√x - 8√2y + 306√x - 64√2y

This simplifies further to 338√x - 72√2y

That is the final simplified expression.

what is the simplified form of the expression 1/2 (2x + 6).

Answers

1/2(2x+6)
Substitute the one half to both of the numbers inside the parentheses.
1/2*2 is one which would just be x
1/2*6 is three
X+3

The answer would be x+3

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