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The equation represents the statement "3 times the sum of 4 and a number is 18 " is option (D) 3(n+4) = 18

The statement is

3 times the sum of 4 and a number is 18

The equation is the the mathematical statement the represents the relationship between two expression or variables with an equal sign.

Consider the unknown number = n

Sum of 4 and the number = n + 4

3 times the sum of 4 and the number = 3(n + 4)

3 times the sum of 4 and a number is 18

3(n + 4) = 18

Hence, the equation represents the statement "3 times the sum of 4 and a number is 18 " is option (D) 3(n+4) = 18

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An equilateral triangle in geometry is a triangle with three equal-length sides. An equilateral triangle has congruent sides, which means that each side is the same length. The triangle MDE is equilateral only because it is midpoint of ACB

If the square of the longest side is smaller than the sum of the squares of the two smaller sides, the triangle is said to have an acute angle according to Pythagoras's theorem. Given a triangle with sides "a," "b," and "c," with side "a" being the longest, the triangle is steeply angled if "a2" exceeds "b2" plus "c2."

By adding the squares of the triangle's two smaller sides and comparing the result to the square of the largest side, you may determine whether the triangle is acute, right, or obtuse. The triangle is sharp because this total is higher.

Isosceles, equilateral, or scalene acute triangles are all possible. An acute triangle's longest side is located across from its biggest angle.

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The piece of information does he need is  ∠F ≅ ∠J.

What is triangle?

A triangle is a polygon with three sides having three vertices. The angle formed inside the triangle is equal to 180 degrees. It means that the sum of the interior angles of a triangle is equal to 180°. It is a polygon having the least number of sides.

Properties of triangle?

Given,

ΔFGH = ΔJKL

By SAS property of triangle;

[tex]\bar{FH}[/tex] ≅ [tex]\bar{JL}[/tex],     FG ≅ JK

third property ,

                         ∠F = ∠J

By SAS property at least two side their ratio must be equal and one angle.

[tex]\frac{FG}{JK} = \frac{FH}{JL}[/tex]

∠F = ∠J

So, option A is correct.

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Answer:

Step-by-step explanation:

The length of material needed for the border is the perimeter of the backyard play area

How to calculate the length of material needed

The area of the play area is given as:

The area of a trapezoid is calculated using:

Where L1 and L2, are the parallel sides of the trapezoid and H represents the height.

The given parameter is not enough to solve the length of material needed.

So, we make use of the following assumed values.

Assume that the parallel sides are: 25 feet and 31 feet long, respectively.

While the other sides are 10.2 feet and 8.2 feet

The length of material needed would be the sum of the above lengths.

So, we have:

Using the assumed values, the length of material needed for the border is 74.4 feet

Answer:

[tex]\textsf{Factored function}: \quad f(x)=(x+2)(3x-5)(x-1)[/tex]

[tex]\textsf{Zeros}: \quad x=-2, \quad x=\dfrac{5}{3},\quad x=1[/tex]

Step-by-step explanation:

Given function:

[tex]f(x)=3x^3-2x^2-11x+10[/tex]

If (x + 2) is a factor then:

[tex]\implies f(x)=(x+2)(ax^2+bx+c)[/tex]

Expand:

[tex]\implies f(x)=ax^3+bx^2+cx+2ax^2+2bx+2c[/tex]

[tex]\implies f(x)=ax^3+2ax^2+bx^2+2bx+cx+2c[/tex]

[tex]\implies f(x)=ax^3+(2a+b)x^2+(2b+c)x+2c[/tex]

To find a, compare the coefficients of x³:

[tex]\implies a=3[/tex]

To find b, substitute the found value of a into the coefficient for x² and compare:

[tex]\implies 2a+b=-2[/tex]

[tex]\implies 2(3)+b=-2[/tex]

[tex]\implies b=-8[/tex]

To find c, compare the constants:

[tex]\implies 2c=10[/tex]

[tex]\implies c=5[/tex]

Therefore:

[tex]\implies f(x)=(x+2)(3x^2-8x+5)[/tex]

Now factor (3x²-8x+5):

[tex]\implies 3x^2-3x-5x+5[/tex]

[tex]\implies 3x(x-1)-5(x-1)[/tex]

[tex]\implies (3x-5)(x-1)[/tex]

Therefore the factored function is:

[tex]\implies f(x)=(x+2)(3x-5)(x-1)[/tex]

Zero Product Property

[tex]\boxed{\text{If \; $a \cdot b = 0$ \; then either \; $a = 0$ \;or \;$b = 0$ (or both)}.}[/tex]

To find the zeros, set each factor equal to zero and solve for x:

[tex]\implies x+2=0 \implies x=-2[/tex]

[tex]\implies 3x-5=0 \implies x=\dfrac{5}{3}[/tex]

[tex]\implies x-1=0 \implies x=1[/tex]

Therefore, the zeros of the function are:

[tex]x=-2, \quad x=\dfrac{5}{3},\quad x=1[/tex]

The  total cost for the group of ten people after discount is 10 t - 0.5 t.

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

Discount = 5%

Total tickets= 10

We have t represents the cost of one ticket.

So, For 10 person the cost of the ticket = 10t

Now, after discount the price of tickets

= 5% of 10t

= 0.5 t

Hence, the total cost for the group of ten people after discount is 10 t - 0.5 t.

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During the first 3 months students club has raised fund of  $1680.

Given that, The Helping Hands Student Club set a goal to raise $4,000 by the end of the school year for a project.

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

After 3 months, it reaches 42% of its goal.

The fund raised during the first 3 months is

42% of 4000

= 42/100 × 4000

= 42×40

= $1680

Therefore, during the first 3 months students club has raised fund of  $1680.

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Answer:

$1,680

Step-by-step explanation:

Answer:

220.

Step-by-step explanation:

If you plug in 4 for L and 6 for W, you are left with 25(4) + 20(6), which is equivalent to 100+120 = $220

Answer:

220

Step-by-step explanation:

The 2.51 × 10⁻⁵ Watts/cm² sound intensity of the sound from the rocket engine has a decibel level of 114 dB

A decibel is a unit to measure the relative loudness of sound or to express the ratio electrical or acoustic power.

The intensity of the sound of the rocket engine = 2.51 × 10⁻⁵ Watts/cm²

Converting the unit of the sound intensity to Watts/m² gives;

1 cm² = 0.0001 m²

10,000 cm² = 1 m²

2.51 × 10⁻⁵ Watts/cm² = 10000 × 2.51 × 10⁻⁵ Watts/m² = 0.251 Watts/m²

The equation for the decibel from the power of sound is presented as follows;

[tex]\beta\ (dB)=10\cdot log_{10}\left(\dfrac{I}{I_0} \right)[/tex]

Where;

I₀ = 10⁻¹² W/m²

Which gives;

[tex]\beta\ (dB)=10\cdot log_{10}\left(\dfrac{0.251 }{10^{-12}} \right) = 113.9967373215 \approx 114[/tex]

The number of decibels for the power of the sound given to the nearest decibel by the rocket engine is 114 decibels

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The total number of degrees the temperature changed in the 6 hours is 12°F

Here,

The temperature dropped 2°F every hour for 6 hours.

We have to find,

The total number of degrees the temperature changed in the 6 hours.

Fahrenheit is a scale for measuring temperature, in which water freezes at 32 degrees and boils at 212 degrees. It is represented by the symbol ° F.

Now,

The temperature dropped 2°F every hour for 6 hours.

1 hour =  2°F

6 hour = 6 x 2 = 12°F

Hence, The total number of degrees the temperature changed in the 6 hours is 12°F.

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The factoring is the representation of a polynomial in multiplication term thus the factoring of (1/3)b - 1/3 will be 1/3(b - 1).

An algebraic factor is the multiplication of two algebraic terms.

That term could be in form of summation multiplication or in subtraction.

The root of the quadratic equation formed by the algebraic factor is always real.

As per the given polygon,(1/3)b - 1/3

Take 1/3 as common in the whole polygon,

1/3(b - 1).

Since the terms 1/3 and (b - 1) both are in the multiplication of each other.

Hence "The factoring is the representation of a polynomial in multiplication term thus the factoring of (1/3)b - 1/3 will be 1/3(b - 1)".

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The image point of the point (-3, -2) after the transformation r x-axis R 270° is; (3, -2).

It follows from the task content that the image point of the pair of coordinates given is to be determined.

Given point is; (-3, -2).

Hence, after a reflection over the x-axis; we have; (-3, 2).

Also, after a rotation of 270°, it follows that we have; (x, y) ==> (-x, -y).

Therefore, the image point is; (-(-3), -(2)).

The image point is therefore; (3, -2).

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After solving, 50% is her hourly overtime rate.

In the given question,

India works overtime, she receives an hourly rate of 1-times her regular hourly 1/2 rate.

We have to find her hourly overtime rate.

India is working overtime so her regular hourly rate is 1/2.

Evaluating the expression

We find her hourly overtime rate in percentage.

She receive overtime rate for 1 time is 1/2 rate.

We can write 1/2 as 0.5.

To express it as percentage we multiply and divide by 100.

= 0.5 × 100/100

= 50%

Hence, 50% is her hourly overtime rate.

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Answer: 85

Step-by-step explanation:

Answer:

Step-by-step explanation:

457-235= 222

222-125=97

97÷2= 48.5

≈49 pairs of pants and shoes

Probability is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

The probability of drawing an even number from a deck of cards is 5/13.

The probability of drawing an even number and then drawing a diamond out of a deck is 1/8.

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

We have,

The number of even numbers in a deck of cards.

= 5 x 4

= 20

The number of diamonds in a deck of cards.

= 4

Now,

The probability of drawing an even number from a deck of cards.

= 20 / 52

= 10/26

= 5/13

Now,

The remaining cards.

= 52 - 20

= 32

The probability of drawing diamonds after drawing the even numbers.

= Number of diamonds / remaining cards

= 4 / 32

= 1/8

Thus,

The probability of drawing an even number from a deck of cards is 5/13.

The probability of drawing an even number and then drawing a diamond out of a deck is 1/8.

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In this case, they are both centimetres, so they remain constant. The true size, 15km, is then multiplied by 13/ 1. Then, 20 × 13 = 195. As a result, the answer is 195 kilometres.

Therefore,

The map has a scale  = 1 cm

Corresponds to  = 15 kilometers

Map centimeters apart​ = 13 cm

Then you simply multiply the true size

= 15km, by 13/ 1.

Then, 20 x 13 = 195.

Hence, the answer is 195 kilometers.

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Answer:

Answer is 0. If you have to owe someone 9 dollars and they give you nine back it is 0. You can also rearrange the problem to 9-9 (same thing) which is 0

The slope of given line is 43

The slope of the line is the rate of change of y with respect to xSlope of a line gives the steepness of line.

The formula of finding the slope of line with two given points is as follows,

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Thewith[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]TheThe[tex]Hdb\pi[/tex]TheThelinem=y2-yy2-y1/xw-xq
x2-x1
x2-x1
x2-x1

It can be seen from the given image thatthat the line moves 3unit in x direct and 4unit in y direction.So the slope will be
be m=43

Hence,the slope of the give line is 43

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The mean of the data is 3.85 using the stem-and-leaf plot.

It means the average feet that the heavy ball was thrown is 3.85 feet, which is the typical number.

To find the mean of a data set that is represented by a stem-and-leaf plot, first, list out all the data values that are represented on the stem-and-leaf plot, add all the values, and divide by the number of values that were represented on the stem-and-leaf plot.

Given the stem-and-leaf plot, using the key, the data points represented are:

2.0, 2.1, 2.4, 3.1, 3.2, 3.6, 4.1, 4.3, 4.7, 5.1, 5.1, 6.5

Mean = [2.0 + 2.1 + 2.4 + 3.1 + 3.2 + 3.6 + 4.1 + 4.3 + 4.7 + 5.1 + 5.1 + 6.5]/12

Mean = 46.2/12

Mean = 3.85 feet

The mean of 3.85 feet means that the average distance that the heavy ball was thrown in feet is 3.85.

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The distance of all the side of ΔABC and ΔA'B'C' are equal which makes them congruent triangles.

What is congruent triangles?

When all 3 corresponding sides and every one 3 corresponding angles area unit equal in size, 2 triangles area unit aforementioned to be congruent.

Main Body:

First let us find the co-ordinates of both the triangles.

A= (3,5)

B = (-2, 3)

C= (-4,-1)

A' =(10,-5)

B'= (5, -3)

C' =(3,1)

Distance between two points =  d=√((x₂ – x₁)² + (y₂ – y₁)²).

In ΔABC

Distance of side AB =  √((3 –(-2) )² + (5 –3 )²)

                                 = √5² +2²

                                 = √29

Distance of side BC = √((-2-(-4) )²+ (3 -(-1 )²)

                                 = √20

Distance of side CA = √((3-(-4) )² + (5-(-1) )²)

                                 = √7² + 6²

                                 = √85

Distance of side A'B' = √((10 -5)² + (-5-(-3))²

                                   = √(5² +2²)

                                   = √29

Distance of side B'C' = √ ((5-3)² + (-3 -1)² )

                                  = √ (2)² +4²

                                  = √20

Distance of side C'A' = √((10-3)² + ( -5-1)²)\

                                   = √(7)² + 6²

                                   = √85

This shows each side of ΔABC is equal to side of ΔA'B'C'.

hence the triangles are congruent.

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The radius of the bigger sphere is 30cm.

Two spherical solids have masses of 15g and 405kg respectively

Mass is directly proportional to volume for same metal (Density)

Let Mass of Solid 1 be M₁ and Volume be V₁

Mass of Solid 2 be M₂ and Volume be V₂

Now  M₁/M₂ =  V₁/V₂

Volume of sphere is directly proportional to R³

So,  M₁/M₂ = V₁/V₂ = R₁³/R₂³​

15/405000 = 10³/x³

∛15/∛405000 = 10/x

2.466/73.986 = 10/x

2.466x = 73.986 x 10

x = 739.86/2.466

x = 30

Therefore, the radius of the bigger sphere is 30cm.

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The first step to find the quotient of a long division problem is to Divide the terms with highest degreee

A quotient is a quantity produced by the division of two numbers. For example 16/4 ,the number that is being divided (in this case, 16) is called the dividend, and the number that it is being divided by (in this case, 4) is called the divisor. The result of the division(5) is the quotient.

The step that is needed to find a quotient of a division are

1.Divide the terms with the highest degree

2.Multiply terms by the divisor

3.Place the result in the quotient

4. Subtract the product from the dividend

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The standard form of the given fractions are;

(i)  −45/30

(ii)  16/−36

(iii)  −3/−15

(iv)  68/−119

A fraction is said to be in standard form when both the numerator and denominator are co-prime numbers. Thus;

1) −45/30; Divide both numerator and denominator by 15 to get;

(−45 ÷ 15)/30

=  -3/2.

(2)  16/−36; Divide both numerator and denominator by 4 to get;

(16 ÷ 4)/(−36 ÷ 4)

= -4/9

(iii)  −3/−15; Divide both numerator and denominator by -3 to get;

(-3 ÷ 4)/(−15 ÷ 4)

1/5

(iv)  68/−119; Divide both numerator and denominator by 19 to get; -4/7

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Complete question is;

Reduce each of the following rational numbers in standard form:

(i)  −45/30

(ii)  16/−36

(iii)  −3/−15

(iv)  68/−119

​

Answer:

25 percent.

Step-by-step explanation:

25 divided by 100 is equal to 0.25. You then multiply that by 100 to get percent, which is 25 percent.

Hope it helps.

The expanded form of  7(7a + 4b) + 10a - 10b and 6(2x+6y) will be 59x+18b and 12x+12y.

The expanding form can be used to indicate the value of each digit in a number in arithmetic. Numbers that are expressed as the sum of each digit multiplied by its place value are known as expanded numbers.

It is given that,

a) 7(7a + 4b) + 10a - 10b

b) 6(2x+6y) -

a)

[tex]=7(7a + 4b) + 10a - 10b \\\\ =49a+28b+10a-10b \\\\ =49a+10a+28b-10b \\\\ =59a+28b-10b \\\\ =59a+18b[/tex]

b)

= 6(2x+6y) -

=12x+12y

Thus, the expanded form of  7(7a + 4b) + 10a - 10b and 6(2x+6y) will be 59x+18b and 12x+12y.

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Answer:

yup

Step-by-step explanation:

so to find the amount of plates he has we :

30*9 = 270

How many guests :

250

Hank has 20 extra plates,

hope this helps :)

The total cans collected by both Elizabeth and Herman is 650 and the total amount of money realized is 1300 cents.

A rate is a ratio in which the two terms being compared have different unit's.For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces.

The aluminum cans collected by Elizabeth from Monday to Fridays is 50× 5days = 250 cans

Herman collected double from Monday to Thursday and collected non on Friday, therefore the total cans collected by Herman = 50×2× 4 days= 400cans

the total cans collected = 250+ 400 cans = 650cans

therefore the total money realized since 1 can is with 2 cent is 650× 2= 1300cents

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An equation of the line that passes through the point (−6,−8) and is parallel to the line x−2y=6 is y=x/2-5.

Given that, an equation of the line that passes through the point (−6,−8) and is parallel to the line x−2y=6.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

We know that, the slope of a line parallel to given line is m1=m2.

Here, x−2y=6

⇒ 2y=x-6

⇒ y=x/2-3

So, slope = 1/2

The slope of a line parallel to the given line = 1/2

Now, put m=1/2 and (x, y)=(-6, -8) in y=mx+c and solve for c

-8=1/2(-6)+c

⇒ c=-8+3

⇒ c=-5

Thus, y=x/2-5

Therefore, an equation of the line that passes through the point (−6,−8) and is parallel to the line x−2y=6 is y=x/2-5.

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