Shawn surveyed his homeroom class to find out how many of his classmates have at least 1 sibling. Of the 32 people in his homeroom, 25 have at least one sibling.
(a) If there are 470 students in Shawn's school, write a proportion that could be used to predict the number of students in the school who have at least one sibling.

The total amount it costs Jeff and Valerie to fill up their vehicles.

The correct option is D.

bx is most likely the amount it costs Jeff and Valerie to fill up their cars because they both pay x dollars per gallon.

Ay = Megan Bx

= Valerie and Jeff

Ay + Bx = Megan + Valerie and Jeff

Algebra is a field of mathematics that assists in the depiction of problems or situations using mathematical expressions. To produce a meaningful mathematical expression, variables like as x, y, and z are used, as well as mathematical operations such as addition, subtraction, multiplication, and division.

Working from left to right, first complete multiplication and division, then addition and subtraction.

The principles of algebra include numbers, variables, constants, expressions, equations, linear equations, as well as quadratic equations.. It also includes basic mathematical operations such as addition, subtraction, multiplication, and division within algebraic equations.

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From the figures and the properties of the parallelogram was possible to find that: UT=27, ST=18, RV=7 and US=14.

There are different quadrilaterals, for example: square, rectangle, rhombus, trapezoid and parallelogram.  Each type is defined accordingly to its length of sides and angles. For example,  the opposite sides are equal and parallel, for a parallelogram. In a parallelogram is noted too that the opposite angles and the diagonals are equal.

From the properties: the opposite sides are equal and parallel for a parallelogram. It is possible to find:

UT=RS=27

ST=RU=18

Considering that UV=7, then VS= 7 since V is the midpoint of the diagonal US. Therefore, US=14.

From the property: the diagonals are equal for a parallelogram. It is possible to find:

US=RT=14

RV=RT/2=14/2=7

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The unknown variable's result of the equation 30² + 35² = x² is 46.10

To solve this problem we must establish the equation, isolate the variable following the rules of clearance and solve the operations:

30² + 35² = x²

900 + 1225 = x²

x² = 2125

x = [tex]\sqrt{}[/tex]2125

x = 46.10

An equation is the equality between two algebraic expressions, which have at least one unknown or variable.

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The equation in slope intercept form of the line having the slope m= 1/2 and y intercept 4 is [tex]y=\frac{1}{2}x+4[/tex]

Given,

The slope of the line = [tex]\frac{1}{2}[/tex]

The y-intercept = 4

We know,

The slope intercept form of the line y = mx + b

Substitute the values in the equation

y= [tex]\frac{1}{2}x+4[/tex]

Hence, the equation in slope intercept form of the line having the slope m= 1/2 and y intercept 4 is [tex]y=\frac{1}{2}x+4[/tex]

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Answer:

here ya go ! also , 0.6 = 3/5 and 1/5 = .2

Step-by-step explanation:

[tex]V = 1.17 * 10^{-29} m^{3}[/tex]  is  volume of a sphere is a function .

What is surface area of volume?

The quantity of surface area per unit volume of an object or collection of objects is known as the surface-area-to-volume ratio, sometimes known as the surface-to-volume ratio and variously abbreviated as sa/vol or SA:V.

Convert the radius from picometers to meters

r = 141     pm = 1.41 * [tex]10^{-10} m[/tex]

V  = 4/3 π r³

 = 4/3 π  ( 1.41 * [tex]10^{-10}[/tex])³

[tex]V = 1.17 * 10^{-29} m^{3}[/tex]

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Answer:

112 mm^2.

Step-by-step explanation:

Total surface area

2(4*8 + 4*2 + 2*8)

= 2 * 56

= 112 mm^2.

Answer:

  remainder: 3/4

Step-by-step explanation:

You want to divide the polynomial (2x^4-9x^3-x^2+2) by (2x-1).

The attachment shows the division worked out.

Your work has a sign error in the second product: (-4x²)(2x-1) should be (-8x³+4x²).

The factor theorem tells you that if division by (2x-1) gives a remainder of 0, then (2x-1) is a factor of the dividend polynomial. Alas, here, the remainder is not zero, so 2x-1 is not a factor.

The remainder theorem tells you that the remainder of p(x) divided by (x-a) is p(a). We can evaluate the polynomial for x=1/2, the value that makes the divisor zero:

  f(1/2) = ((2(1/2) -9)(1/2) -1)(1/2)^2+2 = ((-8)(1/2) -1)(1/4) +2 =(-5)(1/4) +2 = 3/4

The remainder from division by (2x -1) is 3/4.

__

Additional comment

We did the polynomial evaluation by writing it in Horner form. This minimizes the number of arithmetic operations required, and generally makes them simpler.

The linear function for the height of the taller candle after t hours is given by:

h(t) = 18 - 3.1t.

The missing information is that a 18 inch candle is burning at a rate of 3.1 inches an hour.

A linear function is modeled by:

y = mx + b

In which:

For this problem, we have that:

Hence the linear function for the height of the taller candle after t hours is given by:

h(t) = 18 - 3.1t.

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Answer:

so the cell phone plan is $70 per month

Step-by-step explanation:

solution in question

Any method of repositioning a figure in which the relative positions of the figure's points and vertices remain unchanged and the relative distance between them stays the same.

What does the mathematical meaning of congruence mean?

If it is possible to superimpose one geometric figure on the other so that their entire surface coincides, that geometric figure is said to be congruent, or to be in the relation of congruence.

Rigid motion satisfies these requirements because it is rigid, which means that everything that moves remains unchanged except from the location of the overall figure.

Translation, reflection, and rotation are the three basic types of rigid motion.

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The maximum amount of revenue the carnival can expect in the town in the 5th night is; $4746.093.

A geometric progression is defined as a sequence in which any element after the first is obtained by multiplying the previous element by a constant which is called a common ratio denoted by r.

For example, the sequence 1, 4, 16, 64,… is a geometric sequence with a common ratio of r = 4.

We are told that Revenue in the first night = $15000

Now revenue of new night is 75% of the previous night. Thus;

2nd night = 15000 × 75/100 = $11250

3rd night = $11250 × 75/100  = 8437.5

Therefore, the given geometric sequence is ;

15000, 11250, 8437.5 ...

First term; a = $15000

Common ratio (r) = 11250/15000 = 0.75

The formula for the nth term of a GP is given by ;

aₙ = arⁿ ⁻ ¹

Thus, revenue for the 5th night is;

a₅ = ar⁵⁻¹

a₅ = 15000(0.75)⁴

a₅ = 4746.093

We conclude that the revenue in the 5th night in two will be $4746.093.

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The sum is 40,000.

The difference between compound interest and simple interest is 324 on a certain sum at 9% for 2 years.

So,

Compound interest - Simple interest = 324

C.I - SI = 324

The formula for compound interest is given as:

C.I = P( 1 + r/100 )ⁿ - P

Where P is the principal amount, r is the rate and n is the time in years.

Therefore,

C.I = P( 1 + 9/100)² - P

C.I = P( 1 + 0.09)² - P

C.I = P(1.09)² - P

C.I = 1.1881P - P

C.I = 0.1881P

Now, the formula for simple interest is given as:

S.I = ( P × R × T / 100 )

Where P is the principal amount, R is the rate and T is time in years.

Therefore,

S.I = ( P × 9 × 2 / 100 )

S.I = 18P / 100

S.I = 0.18P

Now,

C.I - S.I = 324

0.1881P - 0.18P 324

0.0081P = 324

P = 324 / 0.0081

P = 324 × 10000 / 81

P = 4 × 10000

P = 40000

Hence, the principal amount is 40,000.

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The measurement of angle ∠1 is 45°.

So,

Therefore, ∠1 is 45°.

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The correct question is given below:
Given the regular polygon, find the measure of each numbered angle.

m ∠ 1

The direct variation is y = 3/2 x, the value of y for x = 3 is 9/2.

A direct variation is defined as having variables that are directly proportional. When one variable's value rises, the other variable's value rises as well, and vice versa. Assuming k is constant, the following is how a direct variation is expressed:

y=kx

As y varies directly with x,

using direct variation,

y = kx

given, y = 3/4 when x = 1/2,

⇒ 3/4 = k 1/2

⇒ k = 3/2

when x = 3,

the value of y will be -

y = kx

⇒ y = 3/2. 3

⇒ y = 9/2

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The equation of the line in slope-intercept form passing through the point (-7 , 10) and parallel to 2x - 3y = -3 is y = (2/3)x + 44/3.

The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.

The slope-intercept form of the equation of a line is given by the formula:

y = mx + b

where m is the slope of the line

b is the y- intercept

If the line is parallel to 2x - 3y = -3, then their slopes are equal. First, express the equation in slope-intercept form y = mx + b to get the slope, m.

2x - 3y = -3

-3y = -2x - 3

y = -2/-3 x - 3/-3

y = 2/3 x + 1

m = 2/3

Substitute the values of the slope and the point to solve for the y-intercept, b.

y = mx + b

10 = 2/3(-7) + b

b = 44/3

Write the equation of the line by plugging in the value of the slope and y-intercept.

y = mx + b

y = (2/3)x + 44/3

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The complete table for the electrician charges is shown below:

               x                  y

               1                 125

               2                175

               3                225

               4                275

According to the statement, there are two variables. First, the number of hours of work (x) and, second, the total fee. The total fee changes linearly with the number of hours and the expression is defined below:

y = x' + (Δy / Δx) · x      (1)

Where:

If we know that x' = 75, Δx = 1 h and Δy = 50, then the values of the table are shown below:

x = 1

y = 75 + 50 · 1

y = 125

x = 2

y = 75 + 50 · 2

y = 175

x = 3

y = 75 + 50 · 3

y = 225

x = 4

y = 75 + 50 · 4

y = 275

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Answer: The number 8,000 represents the change in height necessary to dodge the storm.

The integer representing the altitude after passing the storm is 30,000

Use appropriate tools, draw a number line to represent the airplanes changed altitude = 34000

Step-by-step explanation:

In the picture that is attached, the diagram for this query is displayed.

We are informed that the aircraft's starting height was 30,000 feet.

A. What integer represents the airplane's change in altitude to avoid the storm.?

During the storm:

The plane flew at at altitude of 38,000 feet

We will deduct the end altitude from the starting altitude to obtain the change in altitude.

change of altitude = final altitude - initial altitude

change of altitude = 38,000 - 30,000

                               = 8,000 ft

Therefore, the integer representing the change of altitude to avoid the storm is 8,000

B. What integer represents the airplanes change in altitude immediately after passing the storm?

After the storm:

We are aware that the aircraft returned to its original height following the storm.

The number reflecting the altitude after passing the storm would be 30,000 ft given that the starting altitude is 30,000 ft.

C. Use appropriate tools, draw a number line to represent the airplanes changed altitude.​

See a picture.

Use appropriate tools, draw a number line to represent the airplanes changed altitude = 34000

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yes

when equations are parallel

&

when you solve the equations you have

DIFFERENT NUMBERS on either side of the equal sign

for example when you do the math you would end up with something like :

7 = 0

mrviolamath

khan academy

Answer:

x = 9.

Step-by-step explanation:

12x + 7 = 115

12x + 7 - 7 = 115 - 7

12x = 108

x = 9.

The shape of a stop sign is the shape of a regular octagon. Each interior angle of the regular octagonal, m < LSR = 135.

A regular octagon's area is inscribed in a circle with a radius of one unit. Divide the octagon into eight congruent triangles. The area of one triangle and multiply it by 8 to get the area of the entire octagon.

Because of its eight connected vertices, an octagon has eight sides. As a result, when we assign circle = 1, it has only one side, which is a curve, whereas when we assign octagon = 8, it has eight sides, so we assign it the value 8.

The shape of a stop sign is the shape of a regular octagon.

Each exterior angle of the regular octagonal sign is 360/8 = 45.

So, each interior = 180 – 45 = 135.

m < LSR = 135.

Therefore, the interior angle of the regular octagonal, m < LSR = 135.

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The acceleration of the object is 2 m/s²

From the question, we are to determine the acceleration of the object

From Newton's second law of motion, we have that

F = ma

∴ a = F/m

Where F is the net force

m is the mass

and a is the acceleration

From the given information,

m = 5kg

From the diagram,

Net force = 30 N - 20N

Net force = 10 N

Then,

a = F/m

a = 10/5

a = 2 m/s²

Hence, the acceleration of the object is 2 m/s²

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Answer:

power b=3

Step-by-step explanation:

because of the ques statement 3/a of course b=3then only b/a

The population of China is 28 times greater than that of South Korea, calculated using solving of basic linear equation.

As per the question statement, the population of China is about (1.4 × 10⁹) people, while that of South Korea is approximately 50,000,000 people.

We are required to calculate that, by how many times is the is the population of China greater than that of South Korea.

To solve this question, let us assume that, the population of China is "x" times greater than that of South Korea. Hence, we will form a linear equation of single variable (x) and solving for "x", we will obtain our desired answer.

Since the population of China is assumed to be "x" times greater than that of South Korea,

[tex](50000000*x)=1.4*10^{9}\\ or,5*10^{7}*x=1.4*10^{9}\\or,5x=\frac{1.4*10^{9}}{10^{7}} \\or, 5x=1.4*10^{2}\\ or,5x=1.4*100\\or,5x=140\\or,x=\frac{140}{5}\\ or,x=28[/tex]

That is, The population of China is 28 times greater than that of South Korea.

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x = -2

Step-by-step explanation:

x + 7/3 = 10/6

Multiply both sides by 3 so we can divide without getting decimals.

3x + 21/3 = 30/6

Then divide 3x + 21 by the denominator and 30 by 6

x + 7 = 5

Subtract 7 from each side to get x by itself

x = -2

The value of the x in the vertical angles are the 7/2.

According to the statement

We have to find that the value of the x in the given angles.

So, For this purpose, we know that the

An angle is formed when two straight lines or rays meet at a common endpoint.

From the given information:

If angle A is 4x+2 and angle B is 11x.

Then from the given figure, The given angles are the verticals.

We know that the Verticals angles are equal.

Then

4x+2 = 11x

7x = 2

x = 2/7.

Here the values of the x in the given vertical angles are 7/2.

So, The value of the x in the vertical angles are the 7/2.

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