Chuck cannot draw pyramids because the lateral faces of pyramids are triangles and he can include prisms on his poster since the lateral faces of prisms are rectangles. Also, Chuck is not correct that a cylinder is a polyhedron because the faces of a polyhedron are not polygons and a cylinder has 2 circular bases and a curved surface.
Chuck is making a poster about polyhedrons for his math class. He will draw figures and organize them in different sections of the poster. Chuck wants to draw three-dimensional figures whose lateral faces are rectangles. He says he can draw prisms and pyramids. However, Chuck cannot draw pyramids because the lateral faces of a pyramid are triangles. He can include prisms on his poster since the lateral faces of prisms are rectangles.
Chuck says that he can draw a cylinder on his polyhedron poster because it has a pair of bases that are congruent. But, Chuck is not correct. The faces of a polyhedron are not polygons. A cylinder is not a polyhedron because none of its surfaces are polygons. It has 2 circular bases and a curved surface.
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x-18
х
What do I do plz help
Answer:
x = 54°
Step-by-step explanation:
90° = 2x-18°
90° + 18° = 2x
108° = 2x
x = 54°
Answer:
x = 54
Step-by-step explanation:
The two angles added together equal 90 degrees because they are complementary angles.
x - 18 + x = 90
Combine like terms
2x - 18 = 90
add 18 to both sides
2x = 108
Divide each side by 2
x = 54
Fill in for x
54 - 18 + 54 = 90
36 + 54 = 90
90 = 90
This proves that the answer is true.
Stevens new cell phone plan charges a flat monthly fee of $22.5. The plan allows an unlimited number of text messages, but each minute (m) used for the phone calls cost $0.12.
Write an equation that represents the monthly cost(c) of Steven's phone bill based on how many minutes talked?
The required system of equations to express Stevens monthly fee is
22.5 + 0.12 m = c
Given : A flat monthly fee which is charged for Stevens = $22.5
The cost of each phone call = $ 0.12
Let the cost of each monthly call be represented by the letter m
And the total monthly fee be represented by the letter c
thus according to the question the equation can be expressed as :
22.5 + 0.12 m = c
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The perimeter of a rectangle is 70cm.
Its shortest side has a length of 10cm.
Answer:
l=25 cm
Step-by-step explanation:
The perimeter of a rectangle
2(l+w)=70 cm
(l+10)=70/2
l=35-10
l=25
Note : you have no question. So I just assume it
Please help school is ending soon!
Two days later, Kelly surveyed the same 13 classmates and found that none of them had been given math homework since she last surveyed them. By how much does the mean of Kelly’s second data set change in comparison with the mean of the data set in her original survey? Explain how to determine the change in the means without calculating the mean of either data set.
Since none of the 13 classmates had been given math homework between the original survey and Kelly's second survey, the sum of the values in the second data set is the same as the sum of the values in the original data set. Therefore, the change in the means can be determined without calculating the mean of either data set by considering the number of data points in each set.
Since both data sets have the same number of data points, the change in the means will be zero. This is because the mean is calculated by dividing the sum of the values by the number of data points, and since the sum of the values is the same in both data sets, the means will also be the same.
In other words, if the mean of the first data set is x, then the sum of the values in the first data set is 13x (since there are 13 classmates), and the sum of the values in the second data set is also 13x (since none of the values have changed). Therefore, the mean of the second data set will also be x, and the change in the means will be zero.
which cannot be probabilities:
square root of 2, 0, -53, .08, 5/3, 3/5, 1.31
The numbers that cannot be probabilities are: square root of 2, -53, 5/3, and 1.31.
Probability is a measure of the likelihood of a particular event occurring in a random experiment. It is a value between 0 and 1, with 0 indicating that an event is impossible, and 1 indicating that an event is certain to occur.
In statistics, probability is used to make predictions or draw inferences about a population based on a sample of data. For example, if we were to flip a coin, the probability of getting heads is 0.5, or 50%. In general probability can be defined as the ratio of the number of favorable outcomes to the total number of possible outcomes, which is the mathematical framework behind the random experiments.
From the set of numbers, 0, 0.08, and 3/5 are all possible values of probability.
Therefore, square root of 2, -53, 5/3, and 1.31 cannot be probabilities.
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remove the largest common factor. check your answer by multiplication.
21x^5+14x^3-35
Factor out the greatest common factor.
Most common is 7
So
7(3x⁵+2x³-5)Use distributive law to verify
21x⁵+14x³-35Verified
GCF is 7
13th term of 2, 10, 18, 26
Answer:
192
Step-by-step explanation:
Add 8 started from 2 and keep going till you hit 192.
Answer:
a1 = 2 d = 8
n = 13
an = a1 + d(n-1)
a(13) = 2 + 8(13-1)
2 + 8(12)
2 + 96 = 98
Step-by-step explanation:
1. identify the terms
2. write down the arithmetic sequence formula and then replace the letters with their values.
3. do parenthesis first, then multiply by d.
4. add them together to get the 13th term
Please help.
For math class
Answer:
x = 30, z = 45, y = 105
Step-by-step explanation:
The lines are straight, so:
x = 30
z = 45
y = 180 - (45 + 30)
So there
what are the 2 solutions tot he equation below?
The solution of the equation are 8 and -8
The equation is b²/4 + 45 =61
b square by four plus forty five equal to sixty one
b is the variable in the equation
We have to find the solution of the equation
b²/4 = 61-45
b²/4 =16
b²=64
b=±8
Hence, the solution of the equation are 8 and -8
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two cars leave the same parking lot, with one heading north and the other heading east. after several minutes, the northbound car has traveled 3.1 kilometers, and the eastbound car has traveled 8.3 kilometers. measured in a straight line, how far apart are the two cars? if necessary, round to the nearest tenth.
The two cars are 10.5 kilometers apart, measured in a straight line.
This is calculated by taking the square root of the sum of the squares of the distances traveled by the two cars (3.1 km and 8.3 km). The square root of (3.1² + 8.3²) is 10.47, which can be rounded up to 10.5.
To calculate the distance between the two cars, we first need to calculate the sum of the squares of the distances traveled by the two cars (3.1 km and 8.3 km).
3.1² + 8.3² = 68.49
Next, we take the square root of this sum to get the distance between the two cars in a straight line:
√68.49 = 8.25
Finally, we round this number up to the nearest tenth, giving us the final answer of 10.5 kilometers.
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What is the equation of the line in slope-intercept form?
Step-by-step explanation:
x= 0 y= 5
y=mx+b
5=b
x= -3 y= -4
-4= -3m +5
-3m = -9
m= 3
y= 3x +5
Mr. jimenez deposited money into an account in which interest is compounded quarterly at a rate of 2.6%. how much did he deposit if the total amount in his account after 4 years was $7160.06, and he made no other deposits or withdrawals? $6455 $6455 $6798 $6798 $6887 $6887 $6977 $6977 skip to navigation
Answer:
$6455.
Step-by-step explanation:
The formula for this investment is:
A = P(1 + r/4)^4t where P = amount deposited , A amount after t years,
r = rate (as a decimal fraction).
So we have:
7160.06 = P(1 + 0.026/4)^16
7160.06 = P * 1.109227
P = 7160.06 / 1.109227
= $6455.
-12 - 12x = 36 please help me with this problem due today.
Answer:
x = -4
Step-by-step explanation:
-12 -12x = 36
add 12 to each side of the equation
-12x = 48
divide both sides by -12
x = -4
In a certain investigation: 460 persons were involved in the study: and based on an enquiry on their age. it was known that 75% of them were 22 or more years. The following frequency distribution shows the age composition of the persons under study. Find the mean and modal life of condensers_ Mid; age in years No. of persons 18 f; 23 28 33 90 122 ; 38 56 48 24 20 33'
Therefore , the solution of the given problem of percentage comes out to be 38 years old is the median age.
What does a percentage actually mean?In statistics, a "a%" is a figure or statistic that is expressed as a percentage of 100. The words "pct," "pct," but instead "pc" are also not frequently used. However, the sign "%" is frequently used to represent it. The percentage sum is flat; there are no dimensions. Percentages are truly integers because their numerator almost always equals 100. Either the % symbol (%) or the additional term "fraction" must come before a number to denote that it is a percentage.
Here,
The following algorithm must be used to determine the mean age:
=> mean = (all years added together) / (total number of persons)
The representative age for each age group is the age that falls in the middle of the range. With this approach, we can determine the total age as follows:
=>18(9) + 23(28) + 28(33) + 33(90) + 38(122) + 56(48) + 48(24) + 76(20) + 1089(0.25)
=> 162 + 644 + 924 + 2970 + 4636 + 2688 + 1152 + 1520 + 272.25
=>18(9) + 23(28) + 28(33) + 33(90) + 38(122) + 56(48) + 48(24) + 76(20) + 1089(0.25)
According to the information provided, there are 460 people in total.
=> mean = 17745.25 / 460
=> mean = 17745.25 / 460
As a result, the average lifespan is roughly 38.552 years.
The age category in this instance with the highest frequency has a midpoint of 38 and a frequency of 122. As a result, 38 years old is the median age.
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what is the probability that the mean lifetime of 25 randomly selected tires of this type will exceed than 42,000 miles?
The probability that the mean lifetime of 25 randomly selected tires of this type will exceed than 42,000 miles is 25.14.
To break this problem, we need to use the standard normal distribution, assuming that the distribution of tire continuances is roughly normal. We can regularize the value of 42,000 using the formula
z = ( x- μ)/ σ
where x is the value of interest( 42,000 long hauls), μ is the mean tire continuance( 40,000 long hauls), and σ is the standard deviation( 3,000 miles). Plugging in the values, we get
z = ( 42,000- 40,000)/ 3,000 = 0.67
Using a standard normal distribution table or calculator, we can find the probability that an aimlessly named tire will last further than 42,000 long miles by looking up the area to the right of z = 0.67 under the standard average wind. This probability is roughly 25.14.
thus, the probability that a tire named arbitrarily from this brand will last more than 42,000 miles is roughly 25.14.
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The correct question is given below-
A particular brand of tires lasts an average of 40,000 miles with a standard deviation of 3,000 miles. What is the probability a tire selected at random lasts more than 42,000 miles?
POLYNOMIALS
1. Find a quadratic polynomial whose zeroes are 3 and -5
Answer:
y = x² + 2x - 15
Step-by-step explanation:
Given the zeros are x = 3 and x = - 5 then the factors are (x - 3) and (x + 5)
The polynomial is then the product of its factors, thus
y = (x - 3)(x + 5) ← expand using FOIL
y = x² + 2x - 15
Simplify this expression.
–6w + (–8.3) + 1.5+ (–7w)
The simplified form of the expression -6w + (–8.3) + 1.5+ (–7w) is -13w - 6.8.
What is the simplified form of the expression?Given the expression in the question;
-6w + (–8.3) + 1.5+ (–7w)
To simplify, first remove the parenthesis
Note that;
- × + = -- × - = ++ × + = +-6w + × - 8.3 + 1.5 + × - 7w
-6w - 8.3 + 1.5 - 7w
Next collect and add like terms
-6w - 7w - 8.3 + 1.5
Add -6w and -7w
-13w - 8.3 + 1.5
Add -8.3 and 1.5
-13w - 6.8
Therefore, -13w - 6.8 is the simplified form.
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Circle O shown below has a radius of 4 inches. Find, to the nearest tenth, the radianmeasure of the angle, x, that forms an arc whose length is 6 inches.X4 inches6 inches
We are asked to determine the angle "x" that will produce arclength of 6 inches in a circle with a radius of 4 inches. To do that we will use the following formula:
\(S=r\theta\)Where:
\(\begin{gathered} S=\text{ arclength} \\ r=\text{ radius} \\ \theta=\text{ angle in radians} \end{gathered}\)Now, we solve for the angle by dividing both sides by "r":
\(\frac{S}{r}=\theta\)Now, we plug in the values:
\(\frac{6in}{4in}=\theta\)Now, we solve the operations:
\(1.5rad=\theta\)Therefore, the angle is 1.5 radians.
Classify the sequence {1, 6, 11, 16, 21, …}.
Answer:
Classify the sequence {1, 6, 11, 16, 21, …}.
The pattern is +5:
1 + 5 = 6
6 + 5 = 11
11 + 5 = 16
16 + 5 = 21
21 + 5 = 26
And so on
Step-by-step explanation:
You're welcome
find the volume of a right cylinder that has a diameter of 6 m and a height of 22 m. use straight pi equals 3.14 and round your answer to the nearest whole meter.
The volume of the cylinder is approximately 622 cubic meters.
The volume of a cylinder is given by the formula V = πr^2h, where r is the radius and h is the height of the cylinder.
Given that the diameter of the cylinder is 6 m, we can calculate the radius by dividing the diameter by 2:
r = 6 m / 2 = 3 m
Using the value of π as 3.14, we can substitute the values into the volume formula:
V = 3.14 * (3 m)^2 * 22 m
Simplifying the expression:
V = 3.14 * 9 m^2 * 22 m
V = 3.14 * 198 m^3
V ≈ 621.72 m^3
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In the diagram below, a sequence of rigid motions maps ABCD onto JKLM.
If m/ A = 76, m/ B = 110°, and m / L = 116, the m/ M ?
In the diagram, the value of the last angle will be 158°.
How to calculate the angle?It should be noted that the total angle is a quadrilateral is 360°.
In this case, the value of the last angle will be:
= 360° - (76° + 110° + 116°)
= 360° - 302°
= 158°
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A 30 year fixed rate mortgage at 4.5% with principal of $150,000 has a monthly payment of $760 per month. After
30 years, what is the total amount spent on interest?
A) $6,750
B) $123,600
c) $156,750
D) $273,600
Answer:
A 30 year fixed rate mortgage at 4.5% with principal of $150,000 has a monthly payment of $760 per month. After
30 years, what is the total amount spent on interest?
A) $6,750
B) $123,600
c) $156,750
D) $273,600
Step-by-step explanation:
Solve. Round your answer to the nearest thousandth.
Answer: 0.8982
Step-by-step explanation:
math
Answer:
x ≈ 0.898
Step-by-step explanation:
using the rule of logarithms
log \(x^{n}\) = n log x
given
\(6^{x}\) = 5 ( take natural logarithm ln of both sides )
ln \(6^{x}\) = ln 5
x ln 6 = ln 5 ( divide both sides by ln 6 )
x = \(\frac{ln5}{ln6}\) ≈ 0.898 ( to the nearest thousandth )
(-x-y+2z = −21
(5x-3y - 2z=-23
If the equations above are true, which of the following is a value of X-Y?
A:5
B:16
C:-11
D:0
E:21
Answer: E
Step-by-step explanation:
In Aunt Melly's attics there are also spiders and ants, the total of 136 legs and 20 heads. If a spider has 8 legs and an ant has 6 legs, how many spiders and how many ants are there?
Answer:
Spiders=8
Ants=12
Step-by-step explanation:
Spider(s)=8 legs
Ants(a)=6 legs
Total legs=136
Total heads=20
8s+6a=136 (1)
s+a=20 (2)
From (2)
s=20-a
Substitute 20-a into (1)
8s+6a=136
8(20-a)+6a=136
160-8a+6a=136
160-2a=136
-2a=136-160
-2a=-24
a= -24/-2
a=12
Substitute a=12 into (2)
s+a=20
s+12=20
s=20-12
s=8
help me everyone 1-10 and the guide questions
Answer:
1- OII
2- ONI
3-OII
4-ONI
5-ONI
6-ONI
7-ONI
8-OII
9-OII
10-OII
I'm not sure if it's all right :,)
Los números reales se dividen en dos grandes ramas que son
Answer:
The real numbers are divided into two large branches that are
Step-by-step explanation:
Sorry, but I don't understand the question. Maybe a translation would help?
Answer:
Se pueden dividir en números racionales e irracionales.
Step-by-step explanation:
They can be divided into rational and irrational numbers.
Compare and Contrast You have a set of three similar nesting gift boxes. Each box is a regular hexagonal prism. The large box has 10-cm base edges. The medium box has 6-cm base edges. The small box has 3-cm base edges. How does the volume of each box compare to every other box?
Two similar pyramids have heights 6 m and 9 m.
a. What is their scale factor?
b. What is the ratio of their surface areas?
c. What is the ratio of their volumes?
A small, spherical hamster ball has a diameter of 8 in. and a volume of about 268 in.³. A larger ball has a diameter of 14 in. Estimate the volume of the larger hamster ball.
Error Analysis A classmate says that a rectangular prism that is 6 cm long, 8 cm wide, and 15 cm high is similar to a rectangular prism that is 12 cm long, 14 cm wide, and 21 cm high. Explain your classmate's error.
The lateral area of two similar cylinders is 64 m² and 144 m². The volume of the larger cylinder is 216 m². What is the volume of the smaller cylinder?
The volumes of two similar prisms are 135 ft' and 5000 ft.
a. Find the ratio of their heights.
b. Find the ratio of the area of their bases.
- The volume of each box increases as the size of the base edges increases.
a. The scale factor between the pyramids is 3/2.
b. The ratio of their surface areas is 3/2.
c. The ratio of their volumes is 27/8.
- The estimated volume of the larger hamster ball is approximately 905 in³.
- The classmate's error is assuming similarity based solely on the ratio of side lengths without considering the proportionality of all corresponding dimensions.
- The volume of the smaller cylinder is 486 m².
a. The ratio of their heights is approximately 3.17.
b. The ratio of the area of their bases is approximately 7.07.
We have,
Nesting Gift Boxes:
The volume of each box can be determined by multiplying the area of the hexagonal base by the height of the box.
Since the height is not specified, we can assume that all three boxes have the same height.
Comparing the volume of each box:
The volume of the large box is larger than the medium box, and the volume of the medium box is larger than the small box.
The ratio of the volumes will be proportional to the cube of the ratio of the corresponding side lengths.
Similar Pyramids:
a. The scale factor between two similar pyramids can be found by comparing their corresponding heights.
In this case, the scale factor is 9/6 = 3/2.
b. The ratio of their surface areas can be found by comparing the square of their corresponding side lengths.
Since the surface area is proportional to the square of the side length, the ratio will be (9/6)^2 = 3/2.
c. The ratio of their volumes can be found by comparing the cube of their corresponding side lengths.
Since the volume is proportional to the cube of the side length, the ratio will be (9/6)³ = 27/8.
Larger Hamster Ball:
The volume of a sphere is given by the formula V = (4/3)πr³, where r is the radius.
To estimate the volume of the larger hamster ball, we can use the ratio of the cube of their diameters since the volume is proportional to the cube of the diameter.
The ratio of their volumes will be (14/8)³ = 3.375.
Multiplying this ratio by the volume of the smaller ball (268 in³), we estimate that the volume of the larger hamster ball is approximately 268 in³ x 3.375 ≈ 905 in³.
Error Analysis:
The classmate's error is assuming a similarity between the two rectangular prisms based solely on the ratio of their side lengths. Similarity requires that all corresponding angles are equal, not just the side lengths.
In this case, the two prisms have different proportions in terms of their width and height, and therefore they are not similar.
Similar Cylinders:
The lateral area of a cylinder is proportional to its height.
Comparing the lateral areas of the two similar cylinders (64 m² and 144 m²), the ratio of their heights will be √(144/64) = 3/2.
Since the ratio of the heights is 3/2, the ratio of their volumes will also be (3/2)^2 = 9/4.
Given that the volume of the larger cylinder is 216 m², the volume of the smaller cylinder will be (9/4) x 216 m² = 486 m².
Similar Prisms:
a. The ratio of the heights of two similar prisms can be found by taking the cube root of the ratio of their volumes.
In this case, the ratio of their volumes is 5000 ft³ / 135 ft³ = 37.04.
Taking the cube root of 37.04, we find that the ratio of their heights is approximately 3.17.
b. The ratio of the area of their bases will be the square of the ratio of their side lengths.
Since the area of the base is proportional to the square of the side length, the ratio will be \((5000 ft^3 / 135 ft^3)^{2/3}\)= 7.07.
Thus,
- The volume of each box increases as the size of the base edges increases.
a. The scale factor between the pyramids is 3/2.
b. The ratio of their surface areas is 3/2.
c. The ratio of their volumes is 27/8.
- The estimated volume of the larger hamster ball is approximately 905 in³.
- The classmate's error is assuming similarity based solely on the ratio of side lengths without considering the proportionality of all corresponding dimensions.
- The volume of the smaller cylinder is 486 m².
a. The ratio of their heights is approximately 3.17.
b. The ratio of the area of their bases is approximately 7.07.
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chegg amazon ships several parcels each day to multiplelocations. the dispatch centers have conveyor belts where the parcel boxes are placed. in one such center, there are a total of n boxesnumbered 0, 1,., (n - 1), where the capacity of the ith box is denoted by capacity[i]. a box numbered x, can contain a box numbered y, if capacity[x] is divisible by capacity[y]
The correct answer is a box numbered x can contain a box numbered y if capacity[x] is divisible by capacity[y]. The containment relationships can be determined based on this criterion.
In the given scenario, Amazon ships several parcels each day to multiple locations, and the dispatch center has conveyor belts where the parcel boxes are placed. The boxes in the center are numbered from 0 to (n - 1), and the capacity of each box is denoted by capacity[i]. A box numbered x can contain a box numbered y if the capacity[x] is divisible by capacity[y].
To better understand the situation, let's consider an example. Suppose we have 5 boxes numbered from 0 to 4, and their respective capacities are as follows:
capacity[0] = 10
capacity[1] = 20
capacity[2] = 5
capacity[3] = 2
capacity[4] = 1
Based on the given conditions, the box numbered 0 can contain any other box since any number is divisible by 1. The box numbered 1 can contain boxes 0 and 2, as 20 is divisible by 10 and 5. The box numbered 2 can contain only box 4 since 5 is divisible by 1. The box numbered 3 can contain only box 4 as 2 is divisible by 1. Finally, the box numbered 4 cannot contain any other box since it has the smallest capacity.
So, in this case, the possible containment relationships are as follows:
0 can contain: 1, 2, 3, 4
1 can contain: 0, 2
2 can contain: 4
3 can contain: 4
4 cannot contain any other box
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y - (y + y
x); use x = 1
8, and y = 2