7) Roy buys 5 whole pizzas.
8) There are 36 gifts altogether.
9) There is 5 cows and 8 chickens.
10) He travel 210 km.
We have the four parts of question:
Now, We have the information:
7) A whole pizza costs P 190.00 and P 40. 00 for every additional topping.
If he spent P 1070 for pizza with 3 sets of additional toppings.
So, The formation of equation is:
=> (1070 - 3 × 40) ÷ 190
=> 5
8) Total gifts are : 4
and Inside each large gift are 2 medium-sized gifts and inside each
medium-sized gift are 3 small gifts.
So, the formation of equation;
=> 4 × 2 = 8
=> 8 × 3 = 24
The total is:
8 + 24 + 4 = 36
9) There are 13 heads and 36 feet .
We know:
Cows have (C) 4 legs
Chickens have (c) 2 legs
So, The equation will be:
C + c=13 ....eq.(1)
Multiply by 4, we get:
4C+2c=36
Then,
4C+4c=52
4C+2c=36
--------------- (-)
2c=16
c = 8 chickens
We put the value of c in eq.(1), we get
C=13 - 8
C = 5 cows
Hence, There is 5 cows and 8 chickens.
10) Alexander travelled at 6:00 a.m.
and, average speed is 70 km per hour.
So, He travelled 140 km in 2 hours.
After two hours of driving, he stopped for 30 minutes for a rest.
He continued driving and reach his hometown at 9:30 a.m.
So, therefore he continues driving at 8:30
then he arrived at his destination at 9:30
So after his break for driving he travels 1 more hour
So in total he travelled 3 hours to arrive at his destination
3 × 70 = 210.
Learn more about Equation at:
https://brainly.com/question/29657988
#SPJ4
The main span of a suspension bridge is the roadway between the bridges towers. The main span of the Walt Whitman Bridge in Philadelphia is 2000 feet long. This is 600 feet longer than two-fifths of the length of the main span of the George Washington Bridge in New York City. Write an equation to represent the given problem and solve it to find the length of the main span of the George Washington Bridge
The length of the main span of the George Washington Bridge is 3500 feet.
Let x be the length of the main span of the George Washington Bridge.
We know that the main span of the Walt Whitman Bridge is 600 feet longer than two-fifths of the length of the main span of the George Washington Bridge, so we can write the equation:
2000 = (2/5)x + 600
To solve for x, we can start by isolating the term with x on one side of the equation:
(2/5)x = 2000 - 600
(2/5)x = 1400
Then, we can solve for x by multiplying both sides by the reciprocal of (2/5):
x = 1400 / (2/5)
x = 3500
Therefore, the length of the main span of the George Washington Bridge is 3500 feet.
To know more about George Washington Bridge refer here:
https://brainly.com/question/7153606
#SPJ11
Please solve, I rate! :)
Given f(t, y) = – 22 – 4cy3 + 3y5, find 2. - f1(,y) fy(x, y) = = frz(, y) = fry(x, y) =
The critical points are (t, y) = (t, 0) and (t, -4c/5).
To find the partial derivatives, we need to differentiate f(t, y) with respect to each variable separately.
f1(t, y) = ∂f/∂t = 0 (since there is no t term in the function)
fy(t, y) = ∂f/∂y = -12cy^3 + 15y^4
fz(t, y) = ∂^2f/∂t∂z = 0 (since there is no z term in the function)
fy(t, y) = ∂^2f/∂y∂z = 0 (since there is no z term in the function)
So, 2. - f1(,y) fy(x, y) = = frz(, y) = fry(x, y) = 0 - 12cy^3 + 15y^4 = 0 (since f1(,y) and frz(, y) and fry(x, y) are all 0)
Therefore, -12cy^3 + 15y^4 = 0
Factor out y^3:
y^3(-12c + 15y) = 0
This gives us two solutions: y = 0 or -4c/5.
So, the critical points are (t, y) = (t, 0) and (t, -4c/5).
Learn more about partial derivatives :https://brainly.com/question/31280533
#SPJ11
Given PQR with angle P = 42°, angle R = 26°, and PQ = 19, solve the triangle. Round all answers to the nearest tenth.
Angle Q =__
QR =__
PR =__
The solutions to the triangle PQR are:
Angle Q ≈ 112°
Side QR ≈ 8.98
Side PR ≈ 13.71
To solve the triangle PQR, we can use the fact that the sum of the angles in a triangle is always 180°. So we can find angle Q by subtracting the measures of angles P and R from 180°:
angle Q = 180° - angle P - angle R
angle Q = 180° - 42° - 26°
angle Q = 112°
Now, we can use the law of sines to find the lengths of the sides QR and PR.
The law of sines states that in any triangle ABC, the following equation holds:
a/sin(A) = b/sin(B) = c/sin(C)
where a, b, and c are the side lengths of the triangle, and A, B, and C are the opposite angles, respectively.
Applying this formula to triangle PQR, we can write:
QR/sin(R) = PQ/sin(Q)
QR/sin(26°) = 19/sin(112°)
Solving for QR, we get:
QR = (19 × sin(26°))/sin(112°)
QR ≈ 8.98
Similarly, we can find PR by applying the law of sines to triangle PQR as follows:
PR/sin(P) = PQ/sin(Q)
PR/sin(42°) = 19/sin(112°)
Solving for PR, we get:
PR = (19 × sin(42°))/sin(112°)
PR ≈ 13.71
To learn more about the law of sines;
brainly.com/question/17289163
#SPJ1
Solve this system and identify the solution.
Select one:
a.
(5,-2)
b.
infinite solutions
c.
no solutions
d.
(2,-5)
The correct statement regarding the solution to the system of equations is given as follows:
b. Infinite solutions.
How to solve the system of equations?The system of equations in the context of this problem is defined as follows:
3y - 6x = 24.8 + 2x = y.Replacing the second equation into the first, the value of x is obtained as follows:
3(8 + 2x) - 6x = 24
24 + 6x - 6x = 24
24 = 24.
24 = 24 is a statement that is always true, hence the system has an infinite number of solutions, and thus option B is the correct option for this problem.
More can be learned about a system of equations at https://brainly.com/question/13729904
#SPJ1
x An investor puts $4,500 into a life insurance policy that pays 8.0% simple annual interest. If no additional investment is made into the policy, how much accumulated interest should the investor expect at the end of 8 years? HELP PLEASE
The amount of accumulated interest the investor can expect in 8 years is $2,880.
How to find the accumulated interest ?To calculate the accumulated interest on the life insurance policy, we can use the simple interest formula:
I = P x r x t
In this case, the principal amount invested is $4,500, the annual interest rate is 8.0% (or 0.08 as a decimal), and the time period is 8 years. Therefore:
I = 4,500 x 0.08 x 8
I = $2,880
Therefore, the investor can expect to earn $2,880 in accumulated interest at the end of 8 years.
Find out more on interest at https://brainly.com/question/28776427
#SPJ1
What is the horizontal distance between (16, -24) to (-3, -24)
-13 units
-19 units
13 units
19 units
The horizontal distance between (16, -24) and (-3, -24) is 19 units.
Explanation:
We can calculate the horizontal distance by finding the difference between the x-coordinates of the two points.
Horizontal distance = difference in x-coordinates = (-3) - 16 = -19
However, the distance is negative, which doesn't make sense as distance is always positive. So we take the absolute value of the difference to get the actual distance.
|Horizontal distance| = |-19| = 19
Therefore, the horizontal distance between the two points is 19 units.
simplified ration of squares to total shapes is 6:16 for every 3 squares there are how many total shapes there fore the simplified ratio of squares to total shape is what
For every 3 squares, there are 5 total shapes. Therefore, the simplified ratio of squares to total shapes is 3 : 5.
What is the simplified ratio of squares to total shapes?If the unsimplified ratio of squares to total shapes is 6 : 16, then we can express this as 6/16, then,we can simplify this ratio by dividing both the numerator and denominator by 2, giving us 3/8.
This means that for every 3 squares, there are 5 total shapes. Therefore, the simplified ratio of squares to total shapes is 3 : 5.
Full question "Unsimplified ratio of squares to total shapes: 6 : 16. For every 3 squares, there are ____ total shapes; Therefore, the simplified ratio of squares to total shapes is __ : __.
Read more about ratio
brainly.com/question/12024093
#SPJ1
Please upload a picture of a piece of paper with the problem worked out, and draw the graph for extra points, there will be 6 of these, so go to my profile and find the rest, and do the same, for extra points.
The solution of the system of equations is given by the ordered pair (-4, 5).
How to graphically solve this system of equations?In order to graph the solution to the given system of equations on a coordinate plane, we would use an online graphing calculator to plot the given system of equations and then take note of the point of intersection;
x - y = -9 ......equation 1.
3x + 4y = 8 ......equation 2.
Based on the graph shown in the image attached above, we can logically deduce that the solution to this system of equations is the point of intersection of the lines on the graph representing each of them, which lies in Quadrant II, and it is given by the ordered pairs (-4, 5).
Read more on solution and equation here: brainly.com/question/25858757
#SPJ1
3. The table below shows the relationship between the amount of electricity used by a customer in different months and the cost shown on the customer's electric bill. Month 1 2 3 4 Monthly Electric Bills for a Customer Amount of Electricity Used (kilowatt-hours) A 0.095x < 65.00 B. 0.095x> 65.00 C. 0.92x < 65.00 D. 0.92x> 65.00 290 350 460 500 Cost of Electricity Used ($) 27.55 33.25 43.70 47.50 Based on the information shown in the table, which inequality could be used to determine all the numbers of kilowatt-hours (x) of electricity a customer could use in a month for the cost to be less than $65.00?
The correct inequality is:
A. 0.095x < 65.00.
To determine the inequality that represents the numbers of kilowatt-hours a customer could use in a month for the cost to be less than $65.00, we need to look for the rate at which the cost of electricity changes with the amount of electricity used.
From the table, we can see that the cost of electricity increases as the amount of electricity used increases.
We can also see that the cost per kilowatt-hour (the rate) is not constant. For example, the cost per kilowatt-hour for the first month is:
27.55 / 290 ≈ 0.095
But for the fourth month, it is:
47.50 / 500 ≈ 0.095
This means that the rate is not constant, and we cannot simply use a proportion to determine the numbers of kilowatt-hours that will result in a cost of less than $65.00.
However, we can use the data to create an inequality that represents the numbers of kilowatt-hours that will result in a cost less than $65.00. We can start by finding the highest cost per kilowatt-hour:
43.70 / 460 ≈ 0.095
This means that the cost per kilowatt-hour is always less than or equal to 0.095.
Next, we can set up the inequality:
0.095x < 65.00
This inequality represents the numbers of kilowatt-hours that will result in a cost less than $65.00, because if the cost per kilowatt-hour is always less than or equal to 0.095, then the total cost will be less than $65.00 if and only if the number of kilowatt-hours used is less than 684.21 (which is the result of dividing $65.00 by 0.095).
To learn more about inequality;
brainly.com/question/28823603
#SPJ1
a. What does the size of each section tell you about that portion of the data? Select all that apply.
A. The relative importance of the category
B. The difference between the minimum and maximum values within the category
c. The count of data points within the category
D. The relative frequency of data within the category
The size of each section in a graph tells in relation to the portion of the data :
c. The count of data points within the categoryD. The relative frequency of data within the categoryWhat does the size show?The magnitude of a graphic's segment indicates a specific attribute of the data being presented. In charts like pie charts or stacked bar graphs, each component's size denotes the relative frequency or proportion of data points in a particular category.
This implies that larger fragments reflect an increased number of data points for its associated categories whereas smaller ones represent categories with lesser data points.
Find out more on sections at https://brainly.com/question/30688367
#SPJ1
Issac wants to save up some money to buy a new smartphone, so he babysits on the weekends. There is a proportional relationship between the time Oscar spends babysitting(in hours) , z, and the amount of money he earns babysitting(in dollars) , y. What is the constant of proportionality? Write your answer as a whole number or decimal
The constant of proportionality represents the rate at which Issac earns money while babysitting and can be found by dividing the amount of money he earns by the time spent babysitting.
Let's say that Issac earns $10 per hour of babysitting. Then, the constant of proportionality would be:
$10 per hour = $10/1 hour = 10
Therefore, the constant of proportionality is 10, which means that Issac earns $10 for every hour of babysitting. This relationship is an example of proportionality because the amount of money earned is directly proportional to the time spent babysitting. As Issac spends more time babysitting, he will earn more money in a proportional relationship.
To know more about proportionality refer here
https://brainly.com/question/29126727#
#SPJ11
A man buys a car at a cost of r60 000 from cape town and transported it to durban at a cost price of by r4 500. at what price must he sell the car to make an overall profit of 25%
He must sell the car at R80,625 to make an overall profit of 25%
To find the selling price of the car that gives a 25% profit, we need to use the following steps:
Calculate the total cost of buying and transporting the car to Durban:
Total cost = Cost of car + Cost of transportation
Total cost = R60,000 + R4,500
Total cost = R64,500
Calculate the desired profit:
Profit = 25% of total cost
Profit = 0.25 x R64,500
Profit = R16,125
Calculate the total amount that the car needs to be sold for:
Total amount = Total cost + Profit
Total amount = R64,500 + R16,125
Total amount = R80,625
Therefore, the man needs to sell the car for R80,625 to make an overall profit of 25%.
Learn more about sell price at https://brainly.com/question/20332293
#SPJ11
WHATS THE AREA PLEASE HELP DUE in 5 minutes
Answer:
The answer to your problem is, 201.06 or 201.1
Step-by-step explanation:
To find the area you use the formula:
A = π [tex]r^2[/tex]
R = Radius
A = Area
We know the radius of the circle is 8
So replace A = π [tex]r^2[/tex]
= π × 8 ≈ 201.06193
Or 201.06 or 201.1
Thus the answer to your problem is, 201.06 or 201.1
a circular pool has a radius of 32 cm find its area?
Hi! I'm in desperate need of your assistance, please!!
Answer: x = 47
Step-by-step explanation:
45 + x = (2x - 2)
add 2 to both sides
47 + x = 2x
subtract x on both sides
47 = x
What is the unknown fraction?
eight tenths plus unknown fraction equals ninety seven hundredths
seventeen hundredths
eighty nine hundredths
one hundred five hundredths
one hundred seventy seven hundredths
1. Write out the given equation: 8/10 + unknown fraction = 97/100
2. Subtract 8/10 from both sides of the equation to isolate the unknown fraction:
8/10 + unknown fraction - 8/10 = 97/100 - 8/10
Simplifying the left side: unknown fraction = 97/100 - 8/10
3. Convert both fractions to have a common denominator of 100:
97/100 - 8/10 = 97/100 - 80/100
Simplifying the right side: unknown fraction = 17/100
4. Therefore, the unknown fraction is 17/100.
So, the correct answer is "seventeen hundredths".
To know more about denominator refer here
https://brainly.com/question/19613319#
#SPJ11
PLEASE HELP! PHOTO ATTACHED
The total area of the figure is 215π square feet
Calculating the total area of the figureFrom the question, we have the following parameters that can be used in our computation:
Radius, r = 5 cm
Height, h = 14 cm
So, we have
A1 = πr²
A1 = π * 5² = 25π
A2 = 2πrh
A2 = 2 * π * 5 * 14 = 140π
A3 = 1/2(4πr²)
A3 = 1/2(4π * 5²) = 50π
So, we have
Total area = 25π + 140π + 50π
Evaluate
Total area = 215π
Hence, the total area is 215π
Read more about area at
https://brainly.com/question/24487155
#SPJ1
Calculate d²y/dx² y= 0.5x‐⁰.² d²y/dx²=
To calculate d²y/dx², we first need to find the first derivative of y, which is dy/dx. For y = 0.5x^-0.2, we can use the power rule of differentiation, which states that the derivative of x^n is n*x^(n-1). Therefore,
dy/dx = -0.1x^-1.2
To find the second derivative, d²y/dx², we need to differentiate dy/dx again. Using the power rule again, we get:
d²y/dx² = 0.12x^-2.2
This is the second derivative of y with respect to x.
In calculus, a derivative is a measure of how a function changes as its input changes. The second derivative is a measure of how the rate of change of the function itself changes as its input changes. It tells us about the curvature of the function at any given point.
In this case, we have calculated the second derivative of y, which gives us information about the rate of change of the slope of the function. If the second derivative is positive, the function is concave up (curving upward), and if it is negative, the function is concave down (curving downward). If the second derivative is zero, the function has an inflection point (a point where the curvature changes direction).
Overall, the second derivative is a powerful tool in calculus that helps us understand the behavior of functions in more detail.
MORE QUESTION ON second DERIVATIVE : https://brainly.com/question/15180056
#SPJ11
What is the surface area of the square pyramid with base edge of 10 millimeters and a face height of 18 millimeters?
180 mm2
600 mm2
460 mm2
360 mm2
The surface area of the square base pyramid is calculated to be equal to 460 square millimetres.
How to calculate for the total surface area of the square base pyramidarea of one triangle face = 1/2 × 10 mm × 18 = 90 mm² mm
area of the four triangle faces = 4 × 90 mm² = 360 mm²
area of the square base = 10 mm × 10 mm = 100 mm²
surface area of the square base pyramid = 360 mm² + 100 mm²
surface area of the square base pyramid = 460 mm²
Therefore, the surface area of the square base pyramid is calculated to be equal to 460 square millimetres.
Read more about surface area here:https://brainly.com/question/12506372
#SPJ1
The path from Tyler's home to the school is straight. On his way home from school, Tyler starts riding a bus, but seeing his neighbor walking, he decides to get off the bus and join him. they notice that Tyler's distance in meters to the home is y=450-72x, where x is the time in minutes after they meet.
Part A: What is the distance from the place tyler meets his neighbor to tyler's home, in meters?
Part B: What is the speed of Tyler in m/s?
Part C: Let y be the distance in meters from Tyler to the school, x is the time in SECONDS after he meets his neighbor. What is the equation of y in terms of x, is the distance from the school to his home is 800m?
The distance from the place Tyler meets his neighbor to his home is 450 meters.
Tyler's speed is 1.2 meters per second.
How to solvePart A:
To find the distance from the place Tyler meets his neighbor to his home, we need to find the distance when x=0, since it's the time they meet. Plug x=0 into the equation y=450-72x:
y = 450 - 72(0)
y = 450
The distance from the place Tyler meets his neighbor to his home is 450 meters.
Part B:
To find the speed of Tyler, we need to find the rate at which the distance is decreasing. This can be found by taking the derivative of the distance function with respect to time:
dy/dx = -72
Since the derivative is constant, Tyler's speed is constant, and it is 72 meters per minute. To convert it to meters per second, we need to multiply by the conversion factor (1 minute = 60 seconds):
Speed = 72 m/min * (1 min / 60 s)
Thus, the speed = 1.2 m/s
Tyler's speed is 1.2 meters per second.
Read more about speed here:
https://brainly.com/question/13943409
#SPJ1
A tree’s cross sectional area is called its basal area and is measured in square inches. Tree growth can be measured by the growth of the tree’s basal area. The initial base area of tree observed by a biologist is 154 square inches and annual growth rate is 6%. What will be the basal area after 10 years of growth?
The basal area of the tree after 10 years of growth would be approximately 279.7 square inches.
Given the initial basal area of a tree, which is 154 square inches, and the annual growth rate, which is 6%. To find out what the basal area of the tree will be after 10 years of growth.
By using the formula for compound interest, which can be applied to the growth of the basal area over time. The formula is:
A = P(1 + r)ⁿ
where:
A is the final amount
P is the initial amount
r is the annual growth rate
n is the number of years
To find A, the final basal area of the tree after 10 years of growth. We know that P is 154 square inches, r is 6% or 0.06 and n is 10.
By applying these values in the formula, we get:
A = 154(1 + 0.06)¹⁰
A = 154(1.06)¹⁰
A = ≈ 279.7
Therefore, the basal area of the tree after 10 years of growth would be approximately 279.7 square inches.
To know more about basal area here
https://brainly.com/question/27784309
#SPJ4
1. Use integration in cylindrical coordinates in order to compute the vol- ume of: U = {(x,y,z):05:36 - 12 - y}
The volume of the region U is 16π cubic units.
To find the volume of the region U, we can use cylindrical coordinates. In cylindrical coordinates, a point in space is represented by the coordinates (r, θ, z), where r is the distance from the z-axis, θ is the angle between the x-axis and the projection of the point onto the xy-plane, and z is the height above the xy-plane.
In this case, the region U is defined by 0 ≤ r ≤ 2, 0 ≤ θ ≤ 2π, and 0 ≤ z ≤ 12 - r sin(θ).
To find the volume of U, we can integrate over the cylindrical coordinates. The volume of U is given by the integral:
V = ∫∫∫_U dV
where dV = r dz dr dθ is the volume element in cylindrical coordinates.
Substituting in the limits of integration, we have:
V = ∫₀²π ∫₀² ∫₀^(12-rsinθ) r dz dr dθ
Integrating with respect to z, we get:
V = ∫₀²π ∫₀² r(12-rsinθ) dr dθ
Integrating with respect to r, we get:
V = ∫₀²π [(6r² - (1/3)r³sinθ)] from r=0 to r=2 dθ
Simplifying, we get:
V = ∫₀²π [(24 - 16/3 sinθ)] dθ
Integrating, we get:
V = [24θ + 16/3 cosθ] from θ=0 to θ=2π
Simplifying, we get:
V = 48π/3 = 16π
Therefore, the volume of the region U is 16π cubic units.
Visit to know more about volume:-
https://brainly.com/question/463363
#SPJ11
Fill in the table by converting from 12 hour clock to 24 hour clock and vice versa
Converting time from the 12-hour clock format to the 24-hour clock format, and vice versa, can be a bit confusing at times, but it's not that difficult once you know how to do it.
To convert from the 12-hour clock format to the 24-hour clock format, simply add 12 hours to any time after 12:00 p.m. For example, if it's 3:00 p.m., you add 12 hours to get 15:00 (3:00 p.m. in 24-hour format). If it's 11:00 p.m., you add 12 hours to get 23:00 (11:00 p.m. in 24-hour format).
Conversely, to convert from the 24-hour clock format to the 12-hour clock format, simply subtract 12 hours from any time after 12:00 p.m. For example, if it's 16:00 (4:00 p.m.) in 24-hour format, you subtract 12 hours to get 4:00 a.m. in the 12-hour format. If it's 22:00 (10:00 p.m.) in 24-hour format, you subtract 12 hours to get 10:00 a.m. in the 12-hour format.
To help you with these conversions, here is a table with some examples:
| 12-hour clock format | 24-hour clock format |
|---------------------|---------------------|
| 12:00 a.m. | 00:00 |
| 1:00 a.m. | 01:00 |
| 2:00 a.m. | 02:00 |
| 3:00 a.m. | 03:00 |
| 4:00 a.m. | 04:00 |
| 5:00 a.m. | 05:00 |
| 6:00 a.m. | 06:00 |
| 7:00 a.m. | 07:00 |
| 8:00 a.m. | 08:00 |
| 9:00 a.m. | 09:00 |
| 10:00 a.m. | 10:00 |
| 11:00 a.m. | 11:00 |
| 12:00 p.m. | 12:00 |
| 1:00 p.m. | 13:00 |
| 2:00 p.m. | 14:00 |
| 3:00 p.m. | 15:00 |
| 4:00 p.m. | 16:00 |
| 5:00 p.m. | 17:00 |
| 6:00 p.m. | 18:00 |
| 7:00 p.m. | 19:00 |
| 8:00 p.m. | 20:00 |
| 9:00 p.m. | 21:00 |
| 10:00 p.m. | 22:00 |
| 11:00 p.m. | 23:00 |
In conclusion, converting time from the 12-hour clock format to the 24-hour clock format and vice versa is an essential skill to have, especially for those who work in industries that require precise timing. With a bit of practice, anyone can easily master this skill and use it effectively in their day-to-day lives.
To know more about 12-hour clock format refer here
https://brainly.com/question/23719804#
#SPJ11
Help pls working and explanation needed
A. angle CXD = 140 degrees
Angle XCD and Angle XDC are congruent since the triangle is isosceles. Remember that the sum of the interior angles of a triangle is 180 degrees.
20 + 20 + x = 180
x = 140
B. 18 sides
To find the number of sides of the polygon, we need to know the measure of one interior angle. One interior angle is angle BCD. We can easily find the measure of this angle because it is on a straight angle of which we are given part of (angle XCD).
Angle XCD + Angle BCD = 180
20 + BCD = 180
BCD = 160
Now that we know the measure of an interior angle, we can use the formula to find the measure of an interior angle and algebraically solve for the number of sides.
[ (n - 2) x 180 ] / n = 160
(n - 2) x 180 = 160n
180n - 360 = 160n
-360 = -20n
n = 18 sides
C. 2880 degrees
The formula for the sum of the interior angles of a regular polygon is (n - 2) x 180, where n is the number of sides.
(18 - 2) x 180
16 x 180
2880
D. 140 degrees
If angle XCD is 20 degrees, then angle BED is also 20 degrees. Angle BED and Angle BEF make up one of the interior angles of the regular polygon. We know that one interior angle is equal to 160 degrees.
Angle BED + Angle BEF = 160
20 + BEF = 160
BEF = 140
Hope this helps!
PLEASE HELPPPP!!!!
The base of a right octagonal prism has eight sides equal in length. One side of the base measures 2. 3 cm, and the area of the base is 25. 76 cm². The surface area of the prism is 223. 56 cm².
Whats the height of the prism?
The height of the right octagonal prism is approximately 10.75 cm.
The given information states that the base of the prism is a regular octagon with each side measuring 2.3 cm, and the area of the base is 25.76 cm². Additionally, the surface area of the prism is 223.56 cm².
First, let's calculate the area of the eight lateral faces. We can do this by subtracting the base's area from the total surface area:
223.56 cm² (total surface area) - 25.76 cm² (base area) = 197.8 cm² (lateral area)
Now, we know that the lateral area is the sum of the areas of all eight rectangular faces. Each rectangle has a base of 2.3 cm (the same as the sides of the octagonal base) and a height equal to the height of the prism (h). Since there are eight faces, the combined area of these rectangles is 8 x 2.3 x h:
8 x 2.3 x h = 197.8 cm²
18.4 x h = 197.8 cm²
To find the height of the prism (h), we can divide both sides of the equation by 18.4:
h = 197.8 cm² / 18.4
h ≈ 10.75 cm
So, the height of the right octagonal prism is approximately 10.75 cm.
To know more about height, refer to the link below:
https://brainly.com/question/22507937#
#SPJ11
Mrs. davis is traveling for business. she flew from atlanta to washington, d.c. (547 miles) then rented a car and drove to baltimore (6 miles) for another meeting by the time she got home, how many total miles had she travelled?
Mrs. Davis travelled a total of 553 miles.
This can be calculated as:
Distance covered when she flew from Atlanta to Washington d.c.= 547 miles
Distance covered when she rented a car and drove to Baltimore = 6 miles.
Therefore, total miles can simply be calculated as:
Distance covered when she flew from Atlanta to Washington d.c + Distance covered when she rented a car and drove to Baltimore = 547miles+ 6 miles
= 553 miles
Hence, the total miles Mrs. davis travelled is equal to 553 miles.
To know about distance related problems:
https://brainly.com/question/27640162
#SPJ4
A business award is in the shape of a regular hexagonal pyramid. the height of the award is 95 millimeters and the base edge is 44 millimeters.
what is the surface area of the pyramid to the nearest square millimeter?
The surface area of the hexagonal pyramid is 75240 square millimeters to the nearest square millimeter.
The surface area of the hexagonal pyramid can be calculated by finding the sum of the areas of its faces. The hexagonal pyramid has a base with six equal sides of length 44 millimeters, and six identical triangular faces with a height of 95 millimeters.
Each triangular face is an isosceles triangle, with two sides of length 44 millimeters and a base of length equal to the perimeter of the hexagonal base, which is 6 times 44 millimeters, or 264 millimeters.
To calculate the area of each triangular face, we can use the formula for the area of an isosceles triangle, which is (base x height) / 2. Substituting the values we have, we get: Area of each triangular face = (264 x 95) / 2 = 12540 square millimeters
Since the hexagonal pyramid has six identical triangular faces, we can multiply the area of one triangular face by 6 to get the total surface area of the pyramid: Total surface area = 6 x 12540 = 75240 square millimeters.
Learn more about hexagonal pyramid here:
https://brainly.com/question/14010690
#SPJ4
A police unit has deployed a tracking system on a highway with a speed limit of 65 mph. A driver passes through one radar detector at 2pm and is traveling 60 mph at that moment. Then, the driver passes through a second radar detector 159 miles away at 4pm, again traveling 60 mph at that moment. However, a speeding ticket is being issued for this driver. When he asked for an explanation, the response was "Mean Value Theorem. " Explain. Your report should include:
i- Detailed explanation about the mean value theorem.
ii- Detailed calculation steps.
The Mean-Value-Theorem is being used to explain why the driver received a speeding ticket even though they were traveling at exactly 60 mph at both radar-detectors. It suggests that there must have been a moment during the trip where the driver's speed was above the speed limit.
The Mean-Value Theorem is a theorem from calculus that states that for a continuous function on a closed interval, there exists at least one point in the interval where the instantaneous rate of change (the derivative) of the function is equal to the average rate of change of the function over the interval.
In this case, the police unit used the two radar detectors to determine the average-speed of the driver between the two points. The distance between the two detectors is 159 miles, and the time it took for the driver to travel that distance was 2 hours (from 2pm to 4pm), so the average speed of the driver was 159/2 = 79.5 mph.
However, the speed-limit on the highway is 65 mph, so the driver was exceeding the speed limit and received a speeding-ticket.
Learn more about Mean Value Theorem here
https://brainly.com/question/31406425
#SPJ4
describe the sequence of transformations that could verify that the two triangles f and c are similar. give detail on each transformation.
The transformation that verify that the two triangles f and c are similar are
RotationTranslationDilationHow to map the transformation of F to CRotation: The first procedure is rotating triangle C with center art vertex (-9, 2) counterclockwise 90 degrees
Translation: In this case, the triangle is to the right 1 unit and 2 units up
Dilation: The dilation factor here is 2. Using the vertex of of the point which is (-8, 0) as the center, dilate with a scale factor of two
The transformations described moves triangle F to triangle C
Learn more about transformation at
https://brainly.com/question/4289712
#SPJ1
how many minutes are required for 175 gpm to pass the entire 1500-foot length of a 12-inch diameter pipeline
To calculate the time required for 175 gallons per minute (gpm) to pass through a 1500-foot length of a pipeline with a 12-inch diameter, we can follow these steps:
Convert the diameter from inches to feet:
12 inches = 12/12 = 1 foot
Calculate the cross-sectional area of the pipeline using the formula for the area of a circle:
Area = π *[tex](radius)^2[/tex]
Radius = diameter/2 = 1/2 = 0.5 feet
Area = π *[tex](0.5)^2[/tex] = 0.785 square feet
Convert the flow rate from gallons per minute (gpm) to gallons per second (gps):
175 gpm = 175/60 gps
Calculate the velocity of the flow using the formula:
Velocity = Flow rate / Cross-sectional area
Velocity = (175/60) / 0.785 = 3.56 feet per second (rounded to two decimal places)
Calculate the time required to pass the entire 1500-foot length of the pipeline using the formula:
Time = Distance / Velocity
Time = 1500 / 3.56 = 421.35 seconds (rounded to two decimal places)
Convert the time from seconds to minutes:
421.35 seconds = 421.35/60 minutes = 7.02 minutes (rounded to two decimal places)
So, it would take approximately 7.02 minutes for a flow rate of 175 gpm to pass through the entire 1500-foot length of a 12-inch diameter pipeline.
Learn more about “ gallons per minute (gpm) “ visit here;
https://brainly.com/question/14366850
#SPJ4