A true-false test contains 11 questions. In how many different ways can this test be completed. (Assume we don't care about our scores.)Your answer is :

A True-false Test Contains 11 Questions. In How Many Different Ways Can This Test Be Completed. (Assume

Answers

Answer 1

Let's suppose that 1 = TRUE and 0 = FALSE, we want to find how many combinations we can do with 11 zeros and ones, in fact, it's:

[tex]\begin{gathered} \text{ 000 0000 0000} \\ \text{ 000 0000 0001} \\ \text{ 000 0000 0010} \\ \text{ 000 0000 0011} \\ ... \\ \text{ 111 1111 1111} \end{gathered}[/tex]

To evaluate the number of combinations we can do:

[tex]C=2^{11}[/tex]

2 because we can pick 2 different options (true or false) and 11 because it's the number of questions, then

[tex]\begin{gathered} C=2^{11} \\ \\ C=2048 \end{gathered}[/tex]

We have 2048 different ways that this test can be completed.


Related Questions

Can you please help me out with a question

Answers

Note:

For similar shapes, the ratio of their areas is equal to the square of the ratio of sides.

That is:

[tex]\text{ ratio of areas of similar shapes = (ratio of sides )}^2[/tex][tex]\begin{gathered} \frac{846}{376}\text{ = (}\frac{X}{24})^2 \\ \frac{846}{376}\text{ = }\frac{x^2}{576} \\ \text{cross multiply} \\ 376X^2=\text{ 576 x 846} \\ 376X^2=487296 \\ X^2=\frac{487296}{376} \\ X^2=1296 \\ X=\sqrt[]{1296}\text{ = 36} \end{gathered}[/tex]

The value of X is 36

Find the slope of a line parallel to the line whose equation is x-y = 4

Answers

Answer: Slope of 1.

Step-by-step explanation:

    First, we will put the equation into slope-intercept form.

x - y = 4

x = y + 4

y = x - 4

    Our slope, when the line is written as y = mx + b, is the m value. Our m value here is one, so the slope of a line parallel to the line whose equation is x - y = 4 is 1.

Isabel will rent a car for a day. The rental company offers two pricing options: Option A and Option B. For each pricing option, cost (in dollars) depends on miles driven, as shown below.

Answers

(a) Option B, 30

At 180 miles, Option B costs $50, but Option A costs $80.

(b) 60, Option A

The cost is the same when the graphs intersect.Before 60 miles, the graph for Option A is lower than the graph of Option B, meaning Option A will cost less money.

A building floor plan is shaped like a trapezoid, with two right angle corners. If the third corner is a 40° angle, what is the measure of the fourth angle?

Answers

Recall that the interior angles of a regular quadrilateral add up to 360 degrees, and a right angle has a measure of 90 degrees.

Let x° be the measure of the fourth angle, then we can set the following equation:

[tex]40^{\circ}+90^{\circ}+90^{\circ}+x^{\circ}=360^{\circ}.[/tex]

Adding like terms we get:

[tex]220^{\circ}+x^{\circ}=360^{\circ}.[/tex]

Subtracting 220 degrees from the above result we get:

[tex]\begin{gathered} 220^{\circ}+x^{\circ}-220^{\circ}=360^{\circ}-220^{\circ}, \\ x^\circ=140^\circ. \end{gathered}[/tex]

Answer:

[tex]140^{\circ}.[/tex]

The pentagons ABCDE and PQRST are similar.
Find the length x of TP.

Answers

Yo bro, I'm just doing this for the rewards for my homework. please don't read this or take it serious

I can’t seem to understand this. I need 2 solutions and the work. If you could explain the work so I can do it in the future that would be great!!

Answers

Given:

Ethan is 23 years older than Evan

So, let Ethan is (x) years old

And Evan is (y) years old

So, the difference between them is 23 years old

so, x - y = 23

And the sum of Ethan and Evan's age is 43

so, x + y = 43

So, we have the following system of equations:

[tex]\begin{gathered} x-y=23 \\ x+y=43 \end{gathered}[/tex]

add the equations to eliminate (y):

[tex]\begin{gathered} (x-y)+(x+y)=23+43 \\ 2x=66 \\ x=\frac{66}{2}=33 \end{gathered}[/tex]

Now, substitute with (x) into the second equation to find (y):

[tex]\begin{gathered} 33+y=43 \\ y=43-33=10 \end{gathered}[/tex]

So, the answer will be:

Ethan's age = x = 33

Evan's age = y = 10

Find the coordinates of the points of intersection of the graphs with coordinate axes: y= -1/4x+2

Answers

Answer:

Solutions below.

Step-by-step explanation:

This question is asking us to find the points of intersection, which means its asking to find the x-intercept abd y-intercept.

To find the x-intercept, we know that y = 0.

Therefore we can substitute y = 0 into the line equation:

[tex]0 = - \frac{1}{4} x + 2 \\ - \frac{1}{4} x = - 2 \\ x = - 2 \div - \frac{1}{4} \\ = 2 \times 4 \\ = 8[/tex]

Therefore the point of the x-intercept is (8,0).

Likewise to find the y-intercept, we know x = 0.

Therefore we can substitute x = 0 into the line equation:

[tex]y = - \frac{1}{4} (0) + 2 \\ = 0 + 2 \\ = 2[/tex]

Therefore the point of the y-intercept is (0,2).

Answer:

x-intercept:  (8, 0)

y-intercept:  (0, 2)

Step-by-step explanation:

Given equation:

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

The graph intersects the y-axis when x = 0.  

To find the graph's y-intercept, substitute x = 0 into the equation and solve for y:

[tex]\begin{aligned}x=0 \implies y&=-\dfrac{1}{4}(0)+2\\y&=0+2\\y&=2\end{aligned}[/tex]

Therefore, the coordinates of the point of intersection with the y-axis are:

(0, 2)

The graph intersects the x-axis when y = 0.  

To find the graph's x-intercept, substitute y = 0 into the equation and solve for x:

[tex]\begin{aligned}y=0\implies \-\dfrac{1}{4}x+2&=0\\-\dfrac{1}{4}x&=-2\\x&=8\end{aligned}[/tex]

Therefore, the coordinates of the point of intersection with the x-axis are:

(8, 0)

College Algebra

A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 5 hours, while the outlet pipe can empty it in 8 hours. How long will it take to fill the vat if both pipes are left open?

It will take__ hours.
(Simplify your answer. Do not round.)

Answers

Answer:

3 1/13

Step-by-step explanation:

rate(time) of one pipe + rate(time) of the other pipe = 1 job

The rate would be the the number of jobs over the time

The rate of the first pipe is 1/5 and the rate of the second pipe is 1/8.

Together:

1/5t + 1/8t = I job

t(1/5 + 1/8) = 1

t(8/40 + 5/40) = 1

t(13/40) = 1  multiply each side by 40/13

t(40/13)(13/40) = 1(40/13)

t = 40/13

t = 3 1/13

A bicycle has a listed price of 803.98 before tax. If the sales tax is 9.5%, fins the total cost of the bicycle with sales tax included. Round to the nearest cent its necessary.

Answers

The total cost with taxes included is given by

[tex]803.98+803.98\times\frac{9.5}{100}[/tex]

which is equal to

[tex]803.98(1+\frac{9.5}{100})[/tex]

which gives

[tex]\begin{gathered} 803.98(1+0.095) \\ 803.98(1.095) \end{gathered}[/tex]

then, we have $880.3581. By rounding to the nearest cent, the answer is $880.36

Use trigonometric identities and algebraic methods, as necessary, to solve the following trigonometric equation. Please identify all possible solutions by including allanswers in [0, 2x) and indicating the remaining answers by using n to represent any integer. Round your answer to four decimal places, if necessary. If there is nosolution, indicate "No Solution."cos(x) + cos(x) = 4cos(x) + 4

Answers

The solutions to the quadratic trigonometric equation are given as follows:

x = kπ, k = ± 1, ± 3, ± 5, ± 7.

How to solve the quadratic trigonometric equation?

The quadratic trigonometric equation is defined as follows:

cos²(x) + cos(x) = 4cos(x) + 4.

Then the following transformation is applied to solve the equation:

y = cos(x).

Hence:

y² + y = 4y + 4

y² - 3y - 4 = 0

(y - 4)(y + 1) = 0.

Applying the Factor Theorem, the solutions are given as follows:

y - 4 = 0 -> y = 4.y + 1  = 0 -> y = -1.

However, we want the solutions for x, hence they are obtained as follows:

cos(x) = 4.

x = arccos(4), which has no solution, as there are no angles with a cosine of four.

cos(x) = -1.

x = arccos(-1)

x = kπ, k = ± 1, ± 3, ± 5, ± 7

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Point (-3,2) Line x + y = 3 (Question parts in the photo, sorry)

Answers

a)

The slope intercept equation of a line is expressed as

y = mx + c

where

m is the slope

c is the y intercept

The given equation is

x + y = 3

y = - x + 3

By comparing both equations,

m = - 1

If two equations are parallel, it means that they have the same slope. Thus, the slope of the parallel line passing through the point (- 3, 2) is - 1

We would find the y intercept by substituting x = - 3, y = 2 and m = - 1 into the slope intercept equation. It becomes

2 = - 1 * - 3 + c

2 = 3 + c

c = 2 - 3

c = - 1

By substituting m = - 1 and c = - 1 into the slope intercept equation, the equation of the line is

y = - x - 1

b) If two equations are perpendicular, it means that the slope of one line is the negative reciprocal of the slope of the other line Thus, the slope of the perpendicular line passing through the point (- 3, 2) is - - 1/1 = 1

We would find the y intercept by substituting x = - 3, y = 2 and m = 1 into the slope intercept equation. It becomes

2 = 1 * - 3 + c

2 = - 3 + c

c = 2 + 5

c = 5

By substituting m = 1 and c = 5 into the slope intercept equation, the equation of the line is

y = x + 5

a) y = - x - 1

b) y = x + 5

Sketch a diagram showing VX intersectingUW at V so that VX is perpendicular toU and U, V, and W are collinear.

Answers

We have to do a diagram with the following characteristics.

• VX has to intersect UW at V.

,

• VX is perpendicular to UW.

,

• U, V, and W are collinear.

Based on the given information, we have the following diagram

The image above shows the answer.

{2x + 3y = 5}{ y= 5 x -4}

Answers

Solve the system using substitutions:

[tex]\begin{gathered} 2x+3y=5 \\ 2x+3(5x-4)=5 \\ 2x+15x-12=5 \\ 17x=5+12 \\ 17x=17 \\ x=\frac{17}{17} \\ x=1 \end{gathered}[/tex]

x has a value of 1. Use this value to find the value of y.

[tex]\begin{gathered} y=5x-4 \\ y=5\cdot1-4 \\ y=5-4 \\ y=1 \end{gathered}[/tex]

y has a value of 1.

x=1

y=1

A stand at the farmers market sells different types of apples, as shown in the table.

Apple A Apple B Apple C
Cost ($)4.90 1.00 0.45
Weight 4 lb 10 oz 1/2 lb
Which type of apple costs the least per pound?

Answers

The apple that costs the least per pound is Apple B.

What is the least cost?

The cost per pound for each apple will be calculated as:

= Cost / Weight

Apple A:

= Cost / Weight

= 4.90 / 4

= $1.25 per pound

Apple B:

= Cost / Weight

= $1 / 10

= $0.1 per pound

Apple C:

Cost / Weight

= $0.45 / 0.5

= $0.9 per pound

Therefore, apple B is the cheapest

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. Lisa, Bret, and Gary harvested apples.
Lisa filled 3 carts with apples. Bret also
filled 3 carts with apples. Gary filled
another 3 carts with apples. Write a
multiplication equation and a division
equation for this story.

Answers

Multiplication:

Lisa, Bret, and Gary harvested apples. If they each harvested 3 carts of apples, how many carts did they harvest in total?

--> 3 * 3 = 9 carts in total

Division:

Lisa, Bret, and Gary harvested apples. If all three of them harvested 9 carts of apples in total, how many carts did each person harvest.

--> 9 / 3 = 3 carts per person

Dialate about the origin using a scale factor of 1/3

Answers

To determine the post image coordinates after a dilation centered about the origin, we will simply multiply each of the coordinates by the given scale factor of 1/3.

Let's start with Point A.

[tex](-12\times\frac{1}{3},24\times\frac{1}{3})\Rightarrow(-4,8)[/tex]

The post image coordinate of A is at (-4, 8).

Moving on to Point B.

[tex](-30\times\frac{1}{3},0\times\frac{1}{3})\Rightarrow(-10,0)[/tex]

The post image coordinate of B is at (-10, 0).

Lastly to Point C.

[tex](-36\times\frac{1}{3},36\times\frac{1}{3})\Rightarrow(-12,12)[/tex]

The post image coordinate of C is at (-12, 12).

solve the equations and verify the answer ​

Answers

The value of m is -6/5.

What is equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides. We have LHS = RHS (left hand side = right hand side) in every mathematical equation. To determine the value of an unknown variable that represents an unknown quantity, equations can be solved. A statement is not an equation if it has no "equal to" sign.

Given:

2m -3 = 3/10 (5m - 12)

Now, cross multiplying

10( 2m -3)= 3( 5m -12)

20m -30 = 15m - 36

20m- 15m= -36 + 30

5m = -6

Divide both side by 5

m= -6/5

Verification:

LHS = 2m-3

=2(-6/5)-3

=-12/5-3

=-27/5

and, RHS

= 3/10( 5m -12)

=3/10(5 x (-6/5) -12)

=3/10 (-6 - 12)

=3/10 x -18

= -54/10

= -27/5

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in January 2008, the temperature in parts of Minnesota fell from 41 degrees to -13 degrees over a 24 hour period. what was the average temperature change per hour?

Answers

We need to find the average termperature change per hour during January 2008.

We have the information that Minnesota fell from 41 degrees to -13 degrees over 24 hours.

Then, 41 degrees to -13 degrees, there is a difference of 41+13 = 54 degrees over 24 hours.

If the difference is over 24 hours, then:

54 degrees / 24 hours =2.25 F is the rate of change.

However, the termperature is decreasing, so the rate of change must be negative.

Hence, the rate of change = -2.25 F.

The correct answer is the third option.

The values of x and y

Answers

The values of x and y are 26° and 54° respectively.

Consider the triangle with x is triangle 1

Triangle with y is triangle 2

In triangle 1

Since it is a right angled triangle one angle is already known

Another angle is 64°

We know the sum of interior angles of a triangle is equal to 180

Hence 90 + 64 +x = 180°

154 + x = 180°

x= 180 - 154

x = 26°

From triangle 2 it is evident that x and y are complementary angles which means they sum up to 90°

Hence  x + y = 90°

26 + y = 90

y = 90 - 26

y = 54°

Hence the value of x and y are 26° and 54° respectively

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2 × 4/3, but the answer as a fraction

Answers

The given expression is : 2 × 4/3

[tex]\begin{gathered} 2\times\frac{4}{3}=\frac{2\times4}{3} \\ 2\times\frac{4}{3}=\frac{8}{3} \end{gathered}[/tex]

Answer :

[tex]2\times\frac{4}{3}=\frac{8}{3}[/tex]

evaluate the expression, given the functions f and h: f(x)=3x-1, h(x)=-2x^2+3x-9. f(7/3)-h(-2)

Answers

The value of the function f(7/3)-h(-2) is 30

What are functions?

Functions are simply defined as theorems, laws, equation or rules that holds true for the relationship between two variables in a given expression.

The variables are known as;

Independent variableDependent variable

Given the functions as;

f(x)=3x-1 h(x)=-2x^2+3x-9

To determine f(73), substitute the value as x in the function, we have;

f(7/3) = 3(7/3) - 1

expand the bracket

f(7/3) = 7 -1

f(7/3) = 6

For h(-2), substitute the value as x in the function, we have;

h(-2) = -2(-2)² + 3(-2) - 9

expand the bracket

h(-2) = -8 -6 - 9

Subtract the values

h(-2) = -23

Now, f(7/3)-h(-2) = 7 --23

f(7/3)-h(-2) = 30

Hence, the value is 30

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I need help with finding the area and the perimeter for a trapezoid thank you

Answers

From the figure given in the question, we are asked to find the area and perimeter.

(a) Area:

Since the figure is a trapezoid, the formula for the area of a trapezoid is:

Area = (a + b)h

2

Where:

a = 2

b = 5

h = 4

Area = (2 + 5)4

2

Area = 7/2 * 4

Area = 3.5 * 4

Area = 14 cm²

(b) Perimeter:

To get the perimeter, we will have to add all the side length.

But we will have to find the missin side length first.

Using pythagoras:

a² + b² = c²

Where:

a = 4

b = 3

c² = 4² + 3²

c² = 16 + 9

c² = 25

Taking square of both sides:

c = √25

c = 5

Since we have gotten the missing side length as 5cm, we can now add all the given side length to get the perimeter.

Perimeter = 4 + 2 + 5 + 5

Perimeter = 16 cm

The sequence of transformations that can be performed on quadrilateral ABCD to show that it is congruent to quadrilateral GHIJ is a
followed by a

Answers

A 90 degree counterclockwise rotation about point A, a reflection across the y-axis, and a translation 20 units down may be used on quadrilateral ABCD to demonstrate that it is congruent to quadrilateral GHIJ.

A quadrilateral in geometry is a four-sided polygon with four edges and four corners. A polygon with four sides, four angles, and four vertices is called a quadrilateral. The Latin words quadri, which means four, and latus, which means side, were combined to create the English term quadrilateral. A four-sided polygon with four angles is known as a quadrilateral. Parallelogram, rhombus, kite, rectangle, trapezoid, square, and isosceles trapezoid are the seven different forms of quadrilaterals.

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I need help solving for x and y

Answers

[tex]\cos \theta=\frac{x}{16} \implies x=16 \cos \theta \\ \\ \sin \theta=\frac{y}{16} \implies y=16 \sin \theta[/tex]

An agent lists a sellers house for 6% commission. The final agreed sales price is $205,000. How much commission did the seller pay?

Answers

Out of $205000, the total commission earned by the agent will be $12300.

What is Commission?

A commission is a fee paid to a salesperson in exchange for services in facilitating or completing a sale transaction. Mathematically -

Commission [C] = Sales revenue [R] x commission rate [rc]

Given is an agent who lists a sellers house for 6% commission. The final agreed sales price is $205,000.

The total sales price = [P] = $205000

The commission on house = [C] = 6%

Now, the money agent gets as a commission will be = [M] -

[M] = 6% of 205000

[M] = (6/100) x 205000

[M] = 6 x 2050

[M] = 12300

Therefore, out of $205000, the total commission of the agent will be $12300.

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8y=5x-15;y=10 which is the answer

Answers

[tex]8y=5x-15[/tex]

Since we have that y = 10, then:

[tex]8\cdot(10)=5x-15[/tex][tex]80=5x-15\Rightarrow80+15=5x-15+15\Rightarrow95=5x+0[/tex]

Then

[tex]5x=95\Rightarrow\frac{5}{5}x=\frac{95}{5}\Rightarrow x=19[/tex]

In the first part, we need to sum 15 to both sides of the equation.

In the second part, we divide both sides by 5.

Then, x = 19.

What is the area of this figure?
5 mm
19 mm
36 mm
7 mm
8 mm
7 mm
13 mm
9 mm
Write your answer using decimals, if necessary.
9 mm
11 mm

Answers

Answer: 272.5

Explanation:

19x5 = 95
8x7 = 56
7x9 = 63
13x9 = 117 but since its a triangle you divide it by 2 so 58.5
Add all of these together and you get 272.5

Consider the two expressions (6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)/(2x + 3 - 7x - 11) and 4x^2 - 7 + 1/(2x + 3 - 7x - 11)

a) Show that the two expressions represent equal numbers when x = 10

b) Explain why these two expressions do not represent equal numbers when x = -3/2

c) Show that these two expressions represent equal numbers for all x other than -3/2.

Answers

Step-by-step explanation:

a)

(6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)(2x + 3 - 7x - 11)

[tex] \sf \frac{(6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)}{(2x + 3 - 7x - 11)}[/tex]

[tex] \sf = \frac{(6(10)^3 + 9(10)^2 + 4(10) + 7 - 17(10)^2 - 8(10) + 8)}{(2(10) + 3 - 7(10) - 11)}[/tex]

[tex] = \frac{ - 5175}{58}[/tex]

4x^2 - 7 + 1/(2x + 3 - 7x - 11)

[tex] \sf{ 4x^2 - 7 + \frac{1}{(2x + 3 - 7x - 11)}}[/tex]

[tex] \sf{ 4(10)^2 - 7 + \frac{1}{(2(10) + 3 - 7(10) - 11)}}[/tex]

[tex] = \sf \frac{22793}{58}[/tex]

Given the scatter plot on the graph below. What is the slope of the line of fit

Answers

Hello there. To solve this question, we'll have to remember some properties about scatter plots and slope of a line.

Given the scatter plot of the data information, we have to determine the slope of the line.

For this, we could determine it numerically using the least squares method, if we knew the data (the coordinates of the points we're plotting the best fit).

In this case, we simply need to find, by inspection, two points contained in the line and use the slope formula.

Given two points (x0, y0) and (x1, y1) that a line L passes through, then the slope m of this line is given by:

[tex]m=\frac{y_1-y_0}{x_1-x_0}[/tex]

By inspection, we can easily spot the points (16, 12) and (28, 20).

Plugging these coordinates in the formula, we get:

[tex]m=\frac{20-12}{28-16}[/tex]

Add the numbers and simplify the fraction

[tex]m=\frac{8}{12}\overset{:4}{=}\frac{2}{3}[/tex]

This is the slope of this line.

Joe is taking an amortized loan for 85,000 to open a small business, and it's deciding between the offers if two lenders. He wants to know which one would be the better deal over the life of the small business loan, and by how much. a) His credit union had offered him a 9- year small business loan at an annual interest rate of 14.4% find the monthly payment $_b) a bank has offered him a 10-year small business loan at an annual interest rate of 12.8% find the monthly payment c) suppose Joe pays the monthly payment each month for the full term. which lender small business loan would have the lowest total amount to pay off, and how much? Credit UnionThe total amount paid would be $ less than the bank. BankThe total amount paid would be $ less than the credit union.

Answers

[tex]\begin{gathered} a) \\ t=\text{time = 9 years} \\ i=interest=14.4\text{ per cent annual =0.144} \\ monthly\text{ payment =}\frac{loan\cdot i\cdot t}{12} \\ monthly\text{ payment =}\frac{85,000\cdot0.144\cdot9}{12} \\ monthly\text{ payment =55,080} \\ \end{gathered}[/tex]

Other Questions
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