The librarian was checking the thicknesses of several books and found that the average thickness of a book was 1.8 centimeters. She found this by averaging the thicknesses of five different books. Four of the thicknesses were 1.4 cm, 1.9 cm, 2.1 cm, and 2.4 cm. What was the thickness of the fifth book that she measured?

Answer:

pay  three 1 free

Step-by-step explanation:

If you pay 3 and get 1 free, you pay 75%, if you get 20% off you pay 80%. If you want to pay less, pay three and get 1 free

Answer:

The answer is 106

Step-by-step explanation:

for every triangle's measurement adds up to 180 degrees so if you take 74 degrees and subtract it with 180 you would get 106 degrees.

HOPE THIS HELPS

The measure of angle of triangle XWY is 106°.

A triangle is "closed, 3-dimensional shape with 3 - sides, 3 - edges and 3- angles".

According to the question,

The triangle has an angle is 74°.

Sum of angle of triangle is 180°

Measure of an angle XWY  = 180 -74

=106°.

Hence, the measure of angle of triangle XWY is 106°.

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Answer:

b

Step-by-step explanation:

3 x 5=15

15 x 9= 135

135=b

Answer:

y=-3x+10

Step-by-step explanation:

Answer:

There is a very strong positive correlation between size of a cell phone data plan and the number of text  messages sent in the U.S.

Step-by-step explanation:

The correlation coefficient is a statistical degree that computes the strength of the linear relationship amid the relative movements of the two variables (i.e. dependent and independent).It ranges from -1 to +1.

Positive correlation is an association amid two variables in which both variables change in the same direction.  A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.

Negative correlation is a relationship amid two variables in which one variable rises as the other falls, and vice versa.

The correlation coefficient for the relationship  between the size of a cell phone data plan, x, and the number of text  messages sent, y is:

r = +0.97.

The correlation value is very close to +1.

So, we can say that there is a very strong positive correlation between size of a cell phone data plan and the number of text  messages sent in the U.S.

315 students would answer "yes". If 42 out of 50 students answered yes, that'd be 84% (you can determine this by dividing 42/50). Once you've determined that part,  you can multiply 375 by 0.84 (converting a percentage to a decimal), which would give you 315.

Please mark brainliest if this helped in any way, thank you! Have a great day! :)

Out of 50 surveyed students, 84% answered 'yes' to the question about starting a recycling program. Applying this percentage to the whole school of 375 students, we estimate that about 315 would say 'yes'. So, the correct choice is C. 315.

To answer this question, we first need to find out what fraction of students surveyed answered 'yes'. In this case, it's 42 out of 50 students, or 84%. If we apply this percentage to the entire school population, we can estimate how many of the 375 students would likely answer 'yes'.

To do this, you multiply the total number of students (375) by the percentage that answered 'yes' (.84 or 84%) which would give us 315.

So, out of 375 students, we can estimate that approximately 315 would answer 'yes' to the question about starting a recycling program. Hence, the correct answer is C. 315.

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Answer:

I believe it would be J

Step-by-step explanation:

The required time that it takes for 90 miles is 1.5 hour.

The average speed is calculated for a period of time while instantaneous speed is calculated at certain instant of time. For instantaneous speed and average speed are equal for an object moving with constant speed.

The total distance is given as 240 miles.

And, the time taken is 4 hours.

Now, the speed can be calculated by taking the ratio of the distance and time as below,

Speed = Distance ÷ Time

⇒ Speed = 240 ÷ 4 = 60

Thus, the time taken to drive 90 miles is calculated as,

Time = Distance ÷ Speed

⇒ Time = 90 ÷ 60 = 1.5

Hence, the time taken to cover 90 miles is 1 hour.

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Answer:

Fill in the following tables, using the equations.

Cost of owning and operating the vehicles

Vehicle    0              1              2             3             4               5             6    

Van     $20,523   $23,723  $26,923  $30,123  $33,323 $36,523  $39,723

Car      $23,540  $25,990  $28,440  $30,890 $33,340 $35,790  $38,240

How much does each vehicle cost initially?

How much does each cost to operate for one year?

Which one initially costs less?

Which one will cost less over the six years?

When do they cost about the same?

By calculating the costs over various years, you can determine which vehicle is more cost-effective based on the expected ownership duration. For instance, over 5 years, the fuel-efficient car is cheaper.

To compare the total cost of the van and the fuel-efficient car over time, we will use the given equations:

Here, Y represents the total cost over X years. To determine which vehicle is more cost-effective over a certain period, we need to calculate and compare the costs for various values of X.

Example Calculation:

Suppose we compare the costs for 5 years.

In this 5-year scenario, the fuel-efficient car is cheaper than the van.

By performing similar calculations for different time periods, you can determine which vehicle is more cost-effective based on your expected ownership duration.

Answer:

5 and 13

Step-by-step explanation: edge 2021

The alternate exterior angle can be identified by understanding the definition alternate exterior angles.

The alternate exterior angles with angle 11 are angle 13° and angle 5°.

Given:

The parallel line [tex]r\parallel s[/tex] and [tex]t\parallel u[/tex].

Refer the attached figure to understand the given statement.

The alternate exterior angles can be create by transversal intersecting two parallel lines. The alternate exterior angles lies opposite side of transversal and create the two pair line of alternate exterior angles.

As per the above definition alternate exterior angles, we notice in figure [tex]\angle 13[/tex] and [tex]\angle 5[/tex] are the exterior side of parallel lines  and opposite to exterior side of parallel lines.

Thus, the alternate exterior angles with angle 11 are angle 13° and angle 5°.

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Answer:

A B D E F G

Step-by-step explanation:

Integer is a whole number (not a fraction)

Answer:

A, B, D, E, F, G

Step-by-step explanation:

An integer can only be a WHOLE number. C and H are decimals [NOT WHOLE NUMBERS] so they wouldn't satisfy the requirements.

Answer:

Option D: 159 3/8 cm^3

Step-by-step explanation:

1. Let us rewrite the dimensions, and the options to make this a little more clear ~ (dimensions) 5 cm, 8 1/2 cm, 3 3/4 cm ⇒ (options) 17 1/4 cm^3, 18 3/4 cm^3, 27 1/4 cm^3, and 159 3/8 cm^3

2. To find the volume of most 3-dimensional figures, you would have to multiply the Base * height, so for a rectagular prism ⇒ Base * height = length * width * height

3. Substitute and compute the volume through algebra:

5 cm * 8 1/2 cm * 3 3/4 cm =

5 cm * 17/2 cm * 15/4 cm =

85/2 cm^2 * 15/4 cm =

1275/8 cm^3 =

159 3/8 cm^3

4. This means that the Volume of the Rectangular Prism = 159 3/8 cm^3 (Option D)

The volume of the rectangular prism is 159/8 cm³.

The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.

To find the volume of a rectangular prism, we multiply the length, width, and height.

The length of the prism is 5 cm, the height is 8 and one-half cm (or 17/2 cm), and the width is 3 and three-fourths cm (or 15/4 cm).

So, the volume is:

V = l × w × h

V = 5 cm × 15/4 cm × 17/2 cm

V = 159/8 cm³

Therefore, the volume of the rectangular prism is 159/8 cm³.

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Answer: 9 inches by 15 inches

Step-by-step explanation:

5x3=15, and what you do on one side needs to be done to the other, so you do 3x3, which is 9.

Answer:

9

Step-by-step explanation:

Answer:

9b^8 + 24b^3 = (3b^3) [ 3b^5  +  (8)]

greatest common monomial is  3*[tex]b^{3}[/tex]

Step-by-step explanation:

we see  9b^8 + 24b^3

there is a common factor here.

3b^3  so

9b^8 + 24b^3 = (3b^3) * 3b^5  +  (3b^3) *(8)

9b^8 + 24b^3 = (3b^3) [ 3b^5  +  (8)]

so...

Answer:

2

Step-by-step explanation:

The mean is the average of the numbers. You find the mean by adding all of the number values then dividing by the amount of numbers.

0+1+2+3+4=10

There are 5 numbers so we divide by 5

10/5=2

The mean of the parking spots is 2.

Answer:

A,B,C

Step-by-step explanation:

if it is wrong correct me

The correct options are Option A , Option B and Option C.

It is given that of total 15 children at the park, 12 children are riding bicycles and 3 children are riding scooters.

We have to find out that which ratio is correct from the given options.

What will the value of ratio ; 2 : 4 ?

The value will be 1 : 2.

Total number of children at the park = 15

Number of children riding bicycles = 12

Number of children riding scooters = 3

The ratio of bicycles to scooters will be ;

12 : 3

The ratio of scooters to total number of children will be ;

3 : 15

The ratio of bicycles to total number of children will be ;

12 : 15

Thus , the correct options are Option A , Option B and Option C.

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Answer:

A. -4

Step-by-step explanation:

Set equations equal to each other.

2x+7=-1

Subtract 7 from both sides.

2x = -8

Divide both sides by 2.

x = -4

Answer:

34

Step-by-step explanation:

I have none... But I remember being asked this question in class!

I hope I've helped! Please leave a thanks and vote!

Answer:

x = √(14² - 8²) = √(196 - 64) = √132 = 2√33 = about 11.5 feet

Answer:

The answer is D.

Step-by-step explanation:

The expression can be used to find the lateral area plus two bases of the cylinder is (D) 9[tex]\Pi[/tex] + 9[tex]\Pi[/tex] + 6[tex]\Pi[/tex](10) [tex]in^2[/tex] .

Mathematically, an expression is a combination of numbers, variables, operations, and functions that are combined according to specific rules to represent a mathematical computation or relationship. It can be thought of as a mathematical phrase or formula.

The sum of lateral area and the two bases of the cylinder

= lateral area + sum of the area of two bases.

The lateral area = 6[tex]\Pi[/tex](10) [tex]in^2[/tex].

So, The sum of the lateral area and the two bases of the cylinder

= 9[tex]\Pi[/tex] + 9[tex]\Pi[/tex] + 6[tex]\Pi[/tex](10) [tex]in^2[/tex].

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Answer:

536.6

Step-by-step explanation:

First I found the area for the rectangles which is (15x10) multiplied by 3.

Then I found the area for the triangles which is A=(1/2)(8.66)(10). Which equals 43.3, then multiplied that by 2.

Add all the areas together (150)(3)+(43.3)(2)=536.6

Answer:

536.6

Step-by-step explanation:

it is a strange shape and that is the answer

Answer:

less than

Step-by-step explanation:

time is minutes and volume is already gallons and the 2 for gallons is at 4 minutes marking it 1 gallon per 2 minutes or half a gallon per minute

Answer:

choice a.) 4.67

Step-by-step explanation:

Using the Z-score table.

We have:

mean u = 40

standard deviation s  = 3

for X = 54

Z-score = Z = (X - u)/s  = (54 - 40)/3 = 14/3 = 4.6667

P(Z > 4.6667) = 0.000003   very close to 0

Answer:

A. y-axis only

Step-by-step explanation:

We have the graph of  as given below.

It can be seen that  passes through the points (0,0), (4,0) and (6,0).

Also, the graph is plotted in the 1st and 2nd quadrant symmetrically along the y-axis.

Hence, the axis of symmetry of  is the y-axis only.

The graph of r = 1/ (1 - 5sinθ) is symmetric about the y-axis only.

It expresses x and y in terms of r and θ:

x = r cos(θ) , y = r sin(θ)

In polar coordinates, the x-axis corresponds to θ = π/2 and the y-axis corresponds to θ = 0 (or θ = π). So to test for symmetry, we need to check whether replacing θ with π - θ (which reflects the graph across the y-axis) or replacing r with -r (which reflects the graph across the origin) gives us the same equation.

If we replace θ with π - θ, we get:

r = 1 / (1 - 5sin(π - θ)) = 1 / (1 + 5sinθ)

This equation is not the same as the original equation, so there is no symmetry about the y-axis.

If we replace r with -r, we get:

-r = 1 / (1 - 5sinθ)

Multiplying both sides by -1, we get:

r = -1 / (1 - 5sinθ)

This equation is also not the same as the original equation, so there is no symmetry about the origin.

However, if we replace θ with π/2 - θ, we get:

r = 1 / (1 - 5sin(π/2 - θ)) = 1 / (1 + 5cosθ)

This equation is the same as the original equation, so the graph is symmetric about the y-axis.

Therefore, the graph of r = 1/ (1 - 5sinθ) is symmetric about the y-axis only.

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The complete question would be as:

The graph of r = 1/ (1 - 5sinθ) is symmetric about the __________.

A. y-axis only

B. x-axis only

C.Origin only

D.No symmetry

The domain of a function is the set of input values where function defines thus the domain will be all real numbers so option (A) is correct.

A function's range is the set of all values that the function accepts, and its domain is the set of all values for which the function is defined.

The domain is for the independent variable while the range is for the dependent variable.

As per the given graph,

The function is continuous at every interval of x so the domain will be negative infinity to positive infinite or all real numbers.

Hence "The domain of a function is the set of input values where function defines thus the domain will be all real numbers".

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Answer:

The correct answer is 13

Step-by-step explanation:

Answer:

1) y= 2x-4

2) y= 2/3 - 3

3) y=1/2x+2

4) y=-4x-4

Step-by-step explanation:

all you basically has to do is is subtract the x to isolate the y and if the y and if the y still has a number by it you use it to decide it

Answer:

the second one

Step-by-step explanation:

Answer:

The second on is the answer.

Step-by-step explanation:

Answer:

well... show the function lol silly

Step-by-step explanation: