What is the value of x of angle A if angle B is 67 degrees and angle C is 52 degrees?

Answers

Answer 1

Answer:

x=61

Step-by-step explanation:

In a triangle all measure add up to 180 degrees, therefore

52+67=119

180-119=61

This means we have 61 degrees remaining to complete the triangle

Answer 2

Answer:

[tex]x=61^{\circ}[/tex]

Step-by-step explanation:

We have been that B is 67 degrees and angle C is 52 degrees. We are asked to find the value of x of angle A.

We will use angle sum property to solve our given problem.

Angle sum property of triangle states that sum of all angles of a triangle is equal to 180 degrees.

Using angle sum property, we can set an equation as:

[tex]\angle A+\angle B+\angle C=180^{\circ}[/tex]

Upon substituting our given values in above equation, we will get:

[tex]x+67^{\circ}+52^{\circ}=180^{\circ}[/tex]

[tex]x+119^{\circ}=180^{\circ}[/tex]

[tex]x+119^{\circ}-119^{\circ}=180^{\circ}-119^{\circ}[/tex]

[tex]x=61^{\circ}[/tex]

Therefore, the value of x is 61 degrees.


Related Questions

Kelly drinks 0.5 liters of coffee and 0.3 liters of yogurt drink at breakfast. How much did she drink in total in milliliters?

Answers

Answer:

800 milliliters

Step-by-step explanation:

we know that

To find out the total amount Kelly drank, add the amount of coffee and the amount of yogurt and convert the result to milliliters.

so

0.5+0.3=0.8 liters

Remember that

1 liter= 1,000 milliliters

so

0.8 liters=0.8*1,000=800 milliliters

Answer:

800 mL

Step-by-step explanation:

Because we know that

1 liter equals 1000 milliliters

So 0.5+0.3=0.8

0.8 Liters=0.8*1,000 ML

Help!!
Which of the following options is the cheapest per month over all? Assume a month has 30 days
A. rent 11.95 a day
B Lease 149.00 a month 3180 due at signing
C. Buying 16,000.00
D Finance 389.00 /month

Answers

Answer:

The correct option is A.

Step-by-step explanation:

We need to find the cheapest per month over all.

Assume a month has 30 days.

In option A:

Rent = 11.95 a day

Monthly rent = 11.95 × 30 = 358.5

Total renting amount is 358.5.

In option B:

Lease = 149.00 a month 3180 due at signing

Total amount = 149 + 3180 = 3329

Total leasing amount is 3329.

In option C:

Buying = 16,000

In option D:

Finance = 389.00 /month

The cheapest amount for a month is 358.5 .Therefore the correct option is A.

Answer: renting a car

Step-by-step explanation:

Find the final amount for a $750 investment at 5.25% interest compound semiannually for 25 years

Answers

Answer:

=$2739.81

Step-by-step explanation:

To find the total amount if the interest is compounded, we use the compound interest formula.

A=P(1+R/100)ⁿ

A is the amount, P- principal, is the invested amount R is the % interest rate, n is the number if periods.

If compounded semi-annually, it means we have two periods in 1 year

The rate is also divided by 2

Thus 25 years have (25×2) = 50 periods.

A= 750(1+5.25/200)⁵⁰

=750(1.02625)⁵⁰

=$2739.81

sin y +cos y + tan y sin y = sec y +cos y tan y. Verify the Identity. Show all Steps!

Answers

[tex]\bf sin(y)+cos(y)+tan(y)sin(y)=sec(y)+cos(y)tan(y) \\\\[-0.35em] ~\dotfill\\\\ sin(y)+cos(y)+tan(y)sin(y)\implies sin(y)+cos(y)+\cfrac{sin(y)}{cos(y)}\cdot sin(y) \\\\\\ sin(y)+cos(y)+\cfrac{sin^2(y)}{cos(y)}\implies \stackrel{\textit{using the LCD of cos(y)}}{\cfrac{sin(y)cos(y)+cos^2(y)+sin^2(y)}{cos(y)}} \\\\\\ \cfrac{sin(y)cos(y)+\stackrel{cos^2(y)+sin^2(y)}{1}}{cos(y)}\implies \cfrac{sin(y)cos(y)+1}{cos(y)} \\\\\\ \cfrac{sin(y)}{cos(y)}\cdot cos(y)+\cfrac{1}{cos(y)}\implies tan(y)cos(y)+sec(y)[/tex]

About 95% of sixth-grade students will have heights between ______ inches and ______inches.

Answers

Answer:

53.4 and 62.6

Step-by-step explanation:

Answer:

53.4 and 62.6

Step-by-step explanation:

Got it right :/

What is the solution to the system of equations graphed below?

А.(6, 0)
B.(1, 5)
С.(0.3)
D.(0,6)

Answers

Answer:

B

Step-by-step explanation:

The solution to a system of equations given graphically is at the point of intersection of the 2 lines, that is

Solution = (1, 5 ) → B

[tex]\huge{\boxed{\text{(1, 5)}}}[/tex]

All you need to do is find where the intersection of the lines is located.

Count how many units to the right. [tex]1[/tex] This is our [tex]x[/tex] value.

Count how many units up. [tex]5[/tex] This is our [tex]y[/tex] value.

Simplify the expression.
-81 = (-9)

Answers

Answer:

it must be 9

Step-by-step explanation:

it is a simple division.

What is the volume of the triangular prism shown below? PLEASE HELP 10 points

Answers

Answer:

270

Step-by-step explanation:

base area=18

18*15=270

The volume of the triangular prism is equal to [tex]270[/tex] cu. units.

What is volume?

" Volume is defined as the total space occupied by a three-dimensional object."

Formula used

Volume of a triangular prism = Area of the base × height

Area of the base [tex]= \frac{1}{2} \times base \times height[/tex]

According to the question,

Given dimensions,

Base of triangle [tex]= 9 units[/tex]

Height of the triangle [tex]=4 units[/tex]

Height of the triangular prism [tex]= 15 units[/tex]

Substitute the value in the formula to get the area of the base we have,

Area of the base [tex]= \frac{1}{2}\times 9\times 4[/tex]

                             [tex]= 18 square units[/tex]

Volume of a triangular prism [tex]= 18 \times 15[/tex]

                                                  [tex]= 270 cu.units[/tex]

Hence, the volume of the triangular prism is equal to [tex]270[/tex] cu. units.

Learn more about volume here

https://brainly.com/question/1578538

#SPJ2

Sin2x=______


A.2sinxcosx

B.1/2(cos(a-b)-cos(a+b))

C.1-2sin^2x

D.2sinx+2cosx

Answers

Answer:

A.2sinxcosx

Step-by-step explanation:

We know the trig identity

Sin (2a) = 2 sin a cos a

sin (2x) = 2 sin x cos x

Answer:

2sinxcosx

Step-by-step explanation:

A P E X

What does h(40)=1820 mean in terms of the problem ? Help please

Answers

Final answer:

The notation h(40)=1820 means that the function h produces an output of 1820 when the input is 40, although additional context is needed to determine what h represents specifically in this scenario.

Explanation:

The expression h(40)=1820 typically means that a function h is being evaluated at the input value of 40, and the output is 1820. This could represent a variety of contexts, such as the height of a rocket in meters at 40 seconds after launch, the amount of money saved after 40 weeks, or any other situation described by a function where the variable h depends on the number 40. Without additional context, it's impossible to say precisely what 1820 refers to, but it is the result of the function h when the input is 40.

Find the equation of the line that
is perpendicular to y =1/6 x + 3
and contains the point (-3,23).​

Answers

Answer:

y = - 6x + 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = [tex]\frac{1}{6}[/tex] x + 3 ← is in slope- intercept form

with slope m = [tex]\frac{1}{6}[/tex]

Given a line with slope m then the slope of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{1}{6} }[/tex] = - 6, hence

y = - 6x + c ← is the partial equation of the perpendicular line.

To find c substitute (- 3, 23) into the partial equation

23 = 18 + c ⇒ c = 23 - 18 = 5

y = - 6x + 5 ← equation of perpendicular line

a^3b^-2c^-1d if a=2 b=4 c=10 d=15 express as a reduced fraction

Answers

[tex]\bf a^3b^{-2}c^{-1}d\implies \cfrac{a^3d}{b^2c}\qquad \begin{cases} a=2\\ b=4\\ c=10\\ d=15 \end{cases}\implies \cfrac{2^3\cdot 15}{4^2\cdot 10}\implies \cfrac{120}{160}\implies \cfrac{3}{4}[/tex]

(50 Points)

Drag each description to the correct location on the table. Each description can be used more than once.

Some systems of equations and their graphs are given in the table. For each system, place the description(s) in the box that correctly describe the type of system shown.

Please helppppp :((((​

Answers

3x+y=3 is the red line and
6x+2y=-4 is the blue line
I don’t know what descriptions you were given but these two equations are in standard form. They are also parallel to one another and have a negative slope
3x+y=3 in slope form is y=-3x+3
6x+2y=-4 in slope form is y=-3x-2
Hope this helps

Answer:3x+y=3 is the red line.

6x+y=-4 is the blue line.

Step-by-step explanation:I answer it on the test it is right..

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation 3x-5=-2+10

Answers

Final answer:

To isolate the variable terms on one side and the constant terms on the other side of the equation 3x - 5 = -2 + 10, add 2 to both sides, simplify to 3x - 3 = 10, then add 3 to both sides to get the final simplified equation 3x = 13.

Explanation:

The equation 3x - 5 = -2 + 10 needs to be rearranged to isolate the variable terms on one side and the constant terms on the other. To do this, follow these steps:

Add 2 to both sides to move the constant term from the right to the left side: 3x - 5 + 2 = 10.Simplify both sides: 3x - 3 = 10.Add 3 to both sides to completely isolate the constant terms on one side: 3x = 10 + 3.Simplify the equation: 3x = 13.

Now, we have successfully isolated the variable terms (3x) on one side of the equation and the constant terms (13) on the other side.

Solve: ( Brainliest ) -- TIME LIMIT: 8:00 minutes

2/3·z=10/9

Answer in proper and improper

Answers

Answer:

z = 5/3 or 1 2/3

Step-by-step explanation:

2/3·z=10/9

Multiply each side by 3/2

3/2*2/3·z=10/9*3/2

z = 30/18

We can simplify by dividing the top and bottom by 6

z = 5/3

Changing to a mixed number

z =1 2/3

Answer:

1⅔ [OR 5⁄3]

Step-by-step explanation:

2 × ? = 10

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

3 × ? = 9

That would be 1⅔.

I am joyous to assist you anytime.

r=2sec(theta) converted into a cartesian equation

Answers

[tex]\bf r=2sec(\theta )\qquad \begin{cases} x=rcos(\theta )\\ \frac{x}{r}=cos(\theta ) \end{cases}\qquad \implies r=2\cdot \cfrac{1}{cos(\theta )}\implies r=\cfrac{2}{~~\frac{x}{r}~~} \\\\\\ r=\cfrac{\frac{2}{1}}{~~\frac{x}{r}~~}\implies r=\cfrac{2r}{x}\implies x=\cfrac{2~~\begin{matrix} r \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{~~\begin{matrix} r \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}\implies x=2[/tex]

Which numbers are irrational? Check all that apply

Answers

Final answer:

Irrational numbers cannot be expressed as a fraction or ratio of two integers and have decimal representations that go on forever without repeating.

Explanation:

Irrational numbers are numbers that cannot be expressed as a fraction or ratio of two integers. They are decimal numbers that go on forever without repeating. Examples of irrational numbers include π, √2, and √3. These numbers cannot be expressed as a simple fraction or as a terminating or repeating decimal.

a line passes through (3,-2) and (6,2). write an equation in point-slope form. rewrite the equation in standard form ​

Answers

again, bearing in mind that standard form for a linear equation means

• all coefficients must be integers, no fractions

• only the constant on the right-hand-side

• all variables on the left-hand-side, sorted

• "x" must not have a negative coefficient

[tex]\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{-2})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{2}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{2-(-2)}{6-3}\implies \cfrac{2+2}{6-3}\implies \cfrac{4}{3} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-(-2)=\cfrac{4}{3}(x-3)\implies y+2=\cfrac{4}{3}x-4 \\\\[-0.35em] ~\dotfill[/tex]

[tex]\bf y=\cfrac{4}{3}x-6\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{3}}{3(y)=3\left( \cfrac{4}{3}x-6 \right)}\implies 3y=4x-18 \\\\\\ -4x+3y=-18\implies \stackrel{\textit{standard form}}{4x-3y=18}[/tex]

The longer base of an isosceles trapezoid measures 18 ft. The nonparallel sides measure 8 ​ft, and the base angles measure 75 degrees.
​a) Find the length of a diagonal.
​b) Find the area.

Answers

Answer:

a) The length of the diagonal is 17.71 feet

b)  The area of the trapezoid is 123.14 feet²

Step-by-step explanation:

* Lets explain how to solve the problem

- Look to the attached figure

- ABCD is an isosceles trapezoid

∵ DC is the longer base with length 18 feet

∵ AD and BC are the two non-parallel sides with length 8 feet

∵ ∠ ADC and ∠ BCD are the bases angles with measure 75°

- AE and BF are ⊥ DC

# In Δ BFC

∵ m∠BFC = 90° ⇒ BF ⊥ CD

∵ m∠C = 75°

∵ BC = 8

∵ sin∠C = BF/BC

∴ sin(75) = BF/8 ⇒ multiply both sides by 8

BF = 8 × sin(75) = 7.73

∵ cos∠C = CF/BC

∴ cos(75) = CF/8 ⇒ multiply both sides by 8

CF = 8 × cos(75) = 2.07

# In Δ BFD

∵ m∠BFD = 90°

∵ DF = CD - CF

DF = 18 - 2.07 = 15.93

∵ BD = √[(DF)² + (BF)²] ⇒ Pythagoras Theorem

BD = √[(15.93)² + (7.73)²] = 17.71

a)

∵ BD is the diagonal of the trapezoid

* The length of the diagonal is 17.71 feet

b)

- The area of any trapezoid is A = 1/2 (b1 + b2) × h, where b1 and b2

  are the barallel bases and h is the height between the two bases

∵ b1 is CD

∴ b1 = 18

∵ b2 is AB

∵ AB = CD - (CF + DE)

∵ ABCD is an isosceles trapezoid

∴ CF = DE

AB = 18 - (2.07 + 2.07) = 13.86

- BF is the perpendicular between AB and CD

∴ BF = h

h = 7.73

∵ A = 1/2 (18 + 13.86) × 7.73 = 123.14

* The area of the trapezoid is 123.14 feet²

rectangle with a side length of 11" and a diagonal of 14" what is the perimeter

Answers

Answer:

10sqrt3+22

Step-by-step explanation:

Ok, let us imagine it as a sort of rectangle split upon its diagonal.

Using that, we can Pythag it out,

11^2+b^2=14^2

121+b^2=196

b^2=75

b=sqrt75

b=5sqrt3

Ok, using this info, we find the perimeter,

5sqrt3+5sqrt3+11+11

10sqrt3+22

The answer is 10sqrt3+22

Hello!

The answer is:

The perimeter of the rectangle is equal to 39.32".

[tex]Perimeter=39.32in[/tex]

Why?

Since we are working with a rectangle, we can use the Pythagorean theorem to find the missing side of the rectangle and calculate its perimeter. We must remember that we can divide a rectangle into two equal right triangles.

According to the Pythagorean Theorem, we have:

[tex]a^{2}=b^{2}+c^{2}[/tex]

Where:

a, represents the hypotenuse of the triangle which is equal to the diagonal of the given rectangle (14")

b and c are the other sides of the triangle.

Now, let be "a" 14" and "b" 11"

So, solving we have:

[tex]a^{2}=b^{2}+c^{2}[/tex]

[tex]14^{2}=11^{2}+c^{2}[/tex]

[tex]14^{2}-11^{2}=c^{2}[/tex]

[tex]14^{2}-11^{2}=c^{2}\\\\c=\sqrt{14^{2} -11^{2} }=\sqrt{196-121}=\sqrt{75}=8.66in[/tex]

Now, that we already know the the missing side of the rectangle, we can calculate the perimeter using the following formula:

[tex]Perimeter=2base+2length\\\\Perimeter=2*11in+2*8.66in=22in+17.32in=39.32n[/tex]

Hence, we have that the perimeter of the rectangle is equal to 39.32".

Have a nice day!

What is the inverse of the function f(x) = 2x + 17

Answers

To find the inverse of a function switch the place of y (aka f(x) ) with x. Then solve for y.

Original equation:

y = 2x + 17

Switched:

x = 2y + 17

Solve for y by isolating it:

x - 17 = 2y + 17 - 17

x - 17 = 2y

(x - 17)/2 = 2y/2

[tex]\frac{1}{2}x-\frac{17}{2}= y[/tex]

Hope this helped!

~Just a girl in love with Shawn Mendes

All rhombuses are. Parallelograms square rectangules quadrilaterals

Answers

Step-by-step explanation:

Look at the picture.

All rhombuses are

parallelograms

quadrilaterals

Solve for x. Write the smaller solution first, and the larger solution second. (x-10)^2-1=0

Answers

Answer:

[tex]x_1 = 9[/tex] and [tex]x_2 = 11[/tex].

Step-by-step explanation:

Start by adding 1 to both sides of this equation.

[tex](x - 10)^{2} = 1[/tex].

The square of what number or numbers will lead to the number "1"? It turns out that not only [tex]1^{2} = 1[/tex], but [tex](-1)^{2}= 1[/tex] as well. In other words, the value [tex](x - 10)[/tex] can be either 1 or -1. Either way, the equation is still going to hold. That's the reason why there are two solutions to this equation.

Consider the case when [tex]x - 10 = 1[/tex]. Add 10 to both sides of the equation. [tex]x = 11[/tex].

Now, consider the case when [tex]x - 10 = -1[/tex]. Again, add 10 to both sides of the equation, [tex]x = 9[/tex].

Order the two solutions in an increasing order:

[tex]x_1 = 9[/tex],[tex]x_2 = 11[/tex].

Given the system of equations, match the following items.

x + 3y = 5
x - 3y = -1

Answers

To solve the system of equations x + 3y = 5 and x - 3y = -1, we add both equations to get 2x = 4, solve for x to find x = 2, and then substitute x back into one of the equations to find y = 1, resulting in the solution (2, 1).

The solution of the system of linear equations given by x + 3y = 5 and x - 3y = -1 involves manipulating the equations to find the values of x and y that satisfy both equations simultaneously. One common method to solve these is to add or subtract the equations, which eliminates one variable, making it possible to solve for the other.

Starting with the addition method, we align the equations and add them together:

x + 3y = 5

x - 3y = -1

Adding these equations, we get 2x = 4, and solving for x gives us x = 2. We can substitute x = 2 back into one of the original equations to find the value of y, yielding y = 1.

The solution to the system is the intersection point of the two lines represented by the equations, which is the point (2, 1).

Identify the restrictions on the domain of f(x) = quantity x plus 5 over quantity x minus 2.

Answers

The restriction on the domain of the function [tex]f(x) = {x + 5}/{x - 2}.[/tex] is that x cannot be equal to 2, since it would make the denominator zero, which is undefined in real numbers.

The student is asking to identify the restrictions on the domain of the function [tex]f(x) = {x + 5}/{x - 2}.[/tex] The domain of a function includes all the values that x can take for which the function is defined. In the case of a rational function, any values that make the denominator zero must be excluded from the domain since division by zero is undefined.

In this function, the denominator is x - 2. Therefore, the value that makes the denominator zero is x = 2. To identify the restrictions on the domain of [tex]f(x) = {x + 5}/{x - 2}.[/tex] we set the denominator equal to zero and solve for x:

x - 2 = 0x = 2

Hence, the only restriction on the domain of this function is that x cannot be 2. So the domain of f(x) is all real numbers except x = 2.

3
[tex]( - x + 12) - ( - 4x + 2)[/tex]

Answers

Answer:

3x+10

Step-by-step explanation:

( - x + 12) - (  - 4x + 2)

Distribute the minus sign

( - x + 12) + 4x - 2

Combine like terms

3x +10

classify XYZ.

A. Scalene triangle
B. Right triangle
C. Isosceles triangle
D. Equilateral triangle ​

Answers

Answer:

Scalene Triangle

Step-by-step explanation:

By definition, scalene triangles have 3 sides of unequal length.

FYI,

Right Triangle : triangle with one of the angles = 90°

Isosceles Triangles: Triangle with 2 sides of the same length.

Equilateral triangle: Triangle with 3 sides of the same length.

Determine if parallel, perpendicular, or neither.

3y+4x=12
-6y=8x+1

Answers

They are parallel

You have to put the two equations into slope-intercept form to figure out if they are parallel or perpendicular.

Slope-intercept: y=mx+b

The first equation in slope intercept form is: y = -4/3x + 4
Slope of -4/3

The second equation in slope intercept form is: y = -4/3x - 6
Slope of -4/3

Since the slopes are equal and the y-intercepts are different, the two lines are parallel

~~hope this helps~~

Find the equation in slope-intercept form that describes a line through (4, –2) with slope –3

Answers

Answer:

y = - 3x + 10

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here slope m = - 3, hence

y = - 3x + c ← is the partial equation

To find c substitute (4, - 2) into the partial equation

- 2 = - 12 + c ⇒ c = - 2 + 12 = 10

y = - 3x + 10 ← equation of line

Answer:   [tex]y=-3x+10[/tex]

Step-by-step explanation:

The equation of a line in intercept form: [tex]y=mx+c[/tex]

The equation of a line passing through (a,b) and has slope m is given by :_

[tex](y-b)=m(x-a)[/tex]

Similarly, the  equation in slope-intercept form that describes a line through (4, -2) with slope -3 will be :_

[tex](y-(-2))=-3(x-4)\\\\\Rightarrow\ y+2=-3x+12\\\\\Rightarrow\ y=-3x+12-2\\\\\Rightarrow\ y=-3x+10\ \ \text{In intercept form}[/tex]

Hence, the equation in slope-intercept form that describes a line through (4, -2) with slope -3 = [tex]y=-3x+10[/tex]

the area of this rectangle is 4x^2.what does the coefficient 4 mean in terms of the problem?

Answers

Answer:

If the width of the rectangle is x than the length is 4x because 4x*x is 4x^2

Step-by-step explanation:

Other Questions
Select the correct answer.Which table shows a proportional relationship between x and y? Dehydration reactions are used in forming which of the following compounds? A) triacylglycerides B) polysaccharides C) proteins D) A and C only E) A, B, and C Help asapCongruent Angle pairs Drag the tiles to the correct boxes to complete the pairs.Match the lines from Lewis Carrolls Jabberwocky to the sound effects used in them. If a population is recorded at 1,200 in the year 2000 and the rate of increase is a steady 50 people each year, what will be the population in 2018? Spatial organization should be used when your subject can best be explained _____________.a.giving equal emphasis to each part of your subjectb.step by step from beginning to endc.from the inside outd.in order of when the events occurredPlease select the best answer from the choices providedABCD Identify the parent function of the equation below. Normal sinus rhythm is a regular rhythm found in healthy people. What is sinus arrhythmia? How did the Industrial Revolution affect the middle class? Solve: e^2x + 5 = 4help pls When Cooley used the concept of the "looking-glass self" he claimed that Tijuana and Mexicali: (A) are planning to participate in the maquiladora program.(B) are located just opposite the U.S. city of El Paso.(C) were among the first border cites to experience a growth surge. (D) are key cities in the south of Mexico. At a specific point on the demand curve for backpacks, the elasticity of demand is calculated to be -0.5.a. At that point, we would describe demand as ( inelastic / elastic / unit elastic / fully supplied ).b. If the price of backpacks fell by 10%, the quantity demanded would rise by (10% /5% / 50% / 0% ) and revenue for the backpack industry would ( fall / rise) remain the same .c. If the price of backpacks rose by 20% the quantity demanded would fall by ( 20% / 10% / 25% / 40%) and revenue for the backpack industry would ( fall / rise) remain the same A school district needs 3 teachers for every 70 students. They expect to have 14,700 in the district next year. At this time they have 612 teachers. How many more teachers are needed. The return-air ventilation duct in a home has a cross-sectional area of 900 cm^2. The air in a room that has dimensions 7.0 m 11.0 m 2.4 m is to be completely circulated in a 40-min cycle. What is the speed of the air in the duct? (Express your answer to two significant figures.) (m/s) Beginning one month after birth of their son, Noah, the Nelsons deposited $100 each month in an annuity for his college fund. The annuity earned interest at an average rate of 6.8% compounded monthly until his 18th birthday. What was the amount of Noah's college fund on his 18th birthday? Referring to question 4, how much interest did Noah's college fund earn in total on his 18th birthday? The area of a rectangular back yard is 55 square meters. The length of the yard is one meter greater than twice the width.What is the width of the yard in meters?Provide your answer below: I know that these answers are correct, but I don't understand how to get it using the De Moivere Theorem. Can someone please explain in detail? Thank you so much! How did the Jackson era change politics in America? Radioactive wastes are temporarily stored in a spherical container, the center of which is buried a distance of 10 m below the earth's air-soil surface. The outside diameter of the container is 2.0 m, and 500 W of heat are released as a result of radloactive decay. If the soll surface temperature is 25*C, what is the outslde surface temperature of the contalner?