Answer:
20
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
You do 24 times 5 to find out how many stones were in all. Which is 120. Then you take 120 and divide it by 6 students which is 20.
for some particular value of , when is expanded and like terms are combined, the resulting expression contains exactly terms that include the four variables , , , and each to some positive power. what is ?
Using polynomial expansion, the resulting expression contains exactly 1001 terms that include all four variables a, b, c, and d, each to some positive power is 14.
According to the question,
For some particular value of N, when (a + b + c+ d+ 1)² is expanded and like terms are combined, the resulting expression contains exactly 1001 terms that include all four variables a, b, c, and d, each to some positive power.
Polynomial expansion :
(a + b)ⁿ = Cₙ⁰ aⁿ + Cₙⁿ⁻¹ aⁿ⁻¹ b + ....+ Cₙⁿbⁿ
\(x_{a} + x_{b} + x_{c} + x_{d} + x_{1}\) =N
\(x_{a} > 1 x_{b} > 1x_{c} > 1x_{d} > 1x_{1}\) >0
Positive integer solution:
\(x_{a} + x_{b} + x_{c} + x_{d} + x_{1}\) = N+1
Non - Negative integer solution:
\(x_{a} + x_{b} + x_{c} + x_{d} + x_{1}\) =N -4
C⁴ₙ = 1001
1001 = 7.11.13 after some trial and error we find that is N is equal to 14.
Hence, using polynomial expansion, the resulting expression contains exactly 1001 terms that include all four variables a, b, c, and d, each to some positive power is 14.
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What is the Area and Volume of this prism?
The area of the prism is given by the sum of the areas of all the parts that compose the prism.
The parts that compose the prism are given as follows:
Rectangular base of dimensions 3m and 5m.Rectangle of dimensions 5m and 10 m.Two right triangles of sides 3m and 10 m.Hence the area of the prism is given as follows:
A = 3 x 5 + 5 x 10 + 2 x 1/2 x 3 x 10
A = 95 m².
The volume is given by the multiplication of the base area by the height, hence:
Base area = 5 x 3 = 15 m².Height of 10 m.Thus:
V = 15 x 10 = 150 m³.
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what is the volume of a cube with sides of 10 cm in length after removing half a spehere with a diamtere of 10 cm
The volume of the cube after removing a sphere of diameter 10cm from it = 476.67 cm³
What is the volume of a cube?Volume of a cube = \(side^{3}\) (side = side of the cube)
What is the volume of a sphere?
Volume of a sphere = \(\frac{4 \pi (radius)^{2} }{3}\) (radius = radius of the sphere)
Given:
Side of cube = 10cmDiameter of sphere = 10cm (radius = 5cm)Total volume of the cube = \(10^{3}\) = 1000 cm³
Volume of the sphere = \(\frac{4\pi (5)^{3} }{3}\) = 523.33 cm³
Volume of the cube after removing the sphere of diameter 10cm = Total volume of the cube - Volume of the sphere = 1000 - 523.33 = 476.67 cm³
Hence, the required volume of the cube = 476.67 cm³
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The mean age of the employees at a large corporation is 35.2 years, and the standard deviation is 9.5 years. A random sample of 4 employees will be selected. What are the mean and standard deviation of the sampling distribution of the sample mean for samples of size 4
Answer:
35.2 ; 4.75
Step-by-step explanation:
Given that :
Mean age, μ = 35.2 years
Standard deviation, σ = 9.5 years
The mean of the sampling distribution will be equal to the population mean, μ, this is according to the central limit theorem.
The standard deviation of the sampling distribution, is given by : σ/√n
n = sample size = 4
SD of sampling distribution = 9.5/√4 = 9.5 / 2 = 4.75
A garden hose supplies 36 gallons of water in 3 mins use a table of equivalent ratios to show the garden hoses water flow in gallons per min and min per gallon
Answer:
The answer is 12
Step-by-step explanation:
If there are 36 gallons per 3 min. To find the per min you would divide 36 by 3.
what is the probability that after a fair coin is tossed 5 times that the result will contain 3 'heads' given that the first toss was a 'head' ?
Using Conditional probability,
The probability that after a fair coin is tossed 5 times that the result will contain 3 'heads' given that the first toss was a 'head' is 3/5.
A fair coin is tossed five times .
so, total possible outcomes = 2⁵ = 32
Let A: head observed on first toss
B: 3 heads observed.
Probability that the first toss was head (p) = 1/2
we have to find out probability that on 5 tosses result contain 3 heads given that first toss wss head .
Using Binomial Probability distribution
P (X= x) = ⁿCₓ (p)ˣ (q)⁽ⁿ⁻ˣ⁾
x = 3 , n = 5
we get , P(B) = P(X= 3 ) = ⁵C₃(1/2)³(1/2)²
=> P(B) = 10 ×(1/2)⁵= 5/16
since the first toss is fixed as a head.
P(A ∩ B) =P( X₁ = 1 and X₂+ X₃ + X₄ + X₅) = P(X₁= 1)P(X₂+X₃+X₄+X₅)
= 1/2 × ⁴C₂ (1/2)⁵ = 3 (1/2)⁴
The required probability is , Conditional probability P(B/A) = P(A ∩ B)/P(A)
= 3(1/2)⁴/ 5/16 = 3/5
Hence , the required probability is 3/5.
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Find m∠S in rhombus RSTU
Answer:
In a rhombus, opposite angles are equal, therefore:
m∠S = m∠U = a + 62 degrees
And
m∠R = 2a - 80 degrees
The opposite angles of a rhombus are supplementary, meaning they add up to 180 degrees. So,
m∠S + m∠R = 180 degrees
Therefore,
a + 62 + 2a - 80 = 180
Solving for a, we get:
a = 59
So,
m∠S = a + 62 = 59 + 62 = 121 degrees
assuming a linear relationship between x and y, what does it mean if the coefficient of correlation (r) equals -0.30?
The coefficient of correlation (r) being -0.30 indicates a weak negative linear relationship between the variables x and y. The value of r ranges from -1 to 1, where -1 indicates a perfect negative linear relationship, 0 indicates no linear relationship, and 1 indicates a perfect positive linear relationship. Therefore, an r value of -0.30 suggests that there is a weak negative relationship between x and y, but the relationship is not strong enough to be considered a significant predictor of y based on x.
The negative value of r indicates that as the value of x increases, the value of y tends to decrease, although the relationship is weak. It is important to note that while a weak correlation does not necessarily imply causation, it does suggest that there may be some underlying relationship between the variables that should be further explored. Therefore, it is recommended to use other statistical measures in conjunction with the coefficient of correlation to determine the strength and significance of the relationship between x and y.
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Starting at noon, Brody observed the amount of snow on his lawn during a blizzard. He wrote an equation to represent ss, how many inches of snow were on the lawn: s=0.015x+2.5s=0.015x+2.5, where xx represents the number of minutes past noon. What could the number 0.015 represent in the equation?
There are MULTIPLE answers to this question.
- How much more snow is added to the lawn every minute
- The change in the amount of snow on the lawn for every one additional minute
- The rate of change in the amount of snow per minute
Hope this helps!
0.015 represents how much snow is added to the lawn every minute
What is an equation?An equation is a mathematical statement which equate two algebraic expressions.
Here the equation given is s=0.015x+2.5 where s represents how many inches of snow were on the lawn and x represents the number of minutes past noon and 2.5 is constant.How to find what the number 0.015 represents in the equation?In the equation, s represents how many inches of snow were on the lawn. So 0.015x and 2.5 should also represent how many inches of snow were on the lawn.Now x represents the number of minutes past noon.So to make 0.015x represent how many inches of snow were on the lawn, 0.015 should represent the amount of snow is added to the lawn per minute.
So, 0.015 represents how much snow is added to the lawn every minute
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Find the length of the diagonal for a square that is 6 cm. by 6 cm. Leave answer in simple radical form, if necessary.
please hurry I beg
Answer:
\(6\sqrt{2}\)
Step-by-step explanation:
let the diagonal be d
using the pythagoras theorem,
\(6^{2} + 6^{2} = d^{2}\)
\(d=\sqrt{72}\)
which in radical form is
\(6\sqrt{2}\)
The points L M N are such that LMN is a straight line. The coordinates of L are (-3,1), the coordinates of M are (4,9) given that LM:MN = 2:3. Find the coordinates of N
The coordinates of the point N dividing the line LM, with L(-3, 1) and N(4, 9) in the ratio 2:3, found using the internal section formula is \(\left(-\frac{1}{5} ,\, \frac{21}{5} \right)\)
What is a ratio in mathematics?A ratio indicates the number of times one quantity a is contained in another quantity b.
The coordinates of the point L = (-3, 1), the coordinates of the point M = (4, 9)
The ratio in which the point N divides LM = 2:3
The specified ratio of the sides are;
\(\dfrac{LN}{MN} = \dfrac{2}{3}\)
The coordinates of the points N is found using the internal section formula as follows;
\(C(x, y) = \left(\frac{m\times x_2 + n\times x_1}{m+n} , \,\frac{m\times y_2 + n\times y_1}{m+n} \right)\)
Where;
(x₁, y₂), and (x₂, y₂) are the endpoints of the line
m:n is the ratio the point C divides the line
Which indicates;
\(N(x, y) = \left(\frac{2\times 4 + 3\times (-3)}{2+3} , \,\frac{2\times 9 + 3\times 1}{2+3} \right) = \left(-\frac{1}{5} ,\, \frac{21}{5} \right)\)
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c. find the uniform continuous probability for p(25 < x < 45) for u(15, 65). (round your answer to 1 decimal place.)
The uniform continuous probability for the interval (25 < x < 45) within the uniform distribution U(15, 65) can be found by calculating the proportion of the total range that falls within that interval.
To calculate the probability, we need to determine the length of the interval (45 - 25) and divide it by the length of the entire range (65 - 15).
Length of the interval: 45 - 25 = 20
Length of the entire range: 65 - 15 = 50
Now, we divide the length of the interval by the length of the entire range to obtain the probability:
Probability = (Length of interval) / (Length of entire range) = 20 / 50 = 0.4
Therefore, the uniform continuous probability for p(25 < x < 45) within the uniform distribution U(15, 65) is 0.4, rounded to one decimal place.
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arrange in descending order 11/31, 11/5,
11/12
Answer:
11/31 11/12 11/5
Step-by-step explanation:
because 11/5 is a mixed number and the bigger the denominator the smaller the number
mike's cactus was 50 inches tall when he planted it in his yard. The cactus plant grew 1 and 3/4 inches per year . The cactus plant is now 55 and 1/4 inches tall
how many years ago did mike plant the cactus plant?
Answer:
5
Step-by-step explanation:
Solve -2p² - 5p + 1 = 7p² + p using the quadratic formula.
The solutions to the equation -2p² - 5p + 1 = 7p² + p are p = (1 + √2) / (-3) and p = (1 - √2) / (-3).
To solve the equation -2p² - 5p + 1 = 7p² + p using the quadratic formula, we first rearrange the equation to bring all terms to one side:
-2p² - 5p + 1 - 7p² - p = 0
Combining like terms, we get:
-9p² - 6p + 1 = 0
Now, we can apply the quadratic formula, which states that for an equation of the form ax² + bx + c = 0, the solutions are given by:
p = (-b ± √(b² - 4ac)) / (2a)
In our case, a = -9, b = -6, and c = 1. Plugging these values into the quadratic formula, we have:
p = (-(-6) ± √((-6)² - 4(-9)(1))) / (2(-9))
Simplifying further:
p = (6 ± √(36 + 36)) / (-18)
p = (6 ± √72) / (-18)
p = (6 ± 6√2) / (-18)
Factoring out a common factor of 6:
p = (6(1 ± √2)) / (-18)
Simplifying the fraction:
p = (1 ± √2) / (-3)
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Triangle ABC is an isosceles triangle. Find the measure of each base angle.
The measure of each base angle of the isosceles triangle is given as follows:
80º.
How to obtain the angle measure?An isosceles triangle is an angle that has two equal side lengths, meaning that the base angles also have the same measure.
For the top angle of the isosceles triangle ABC, we have that the semicircle, which has an arc length of 180º, is divided into 9 regions, hence it's measure is calculated as follows:
Top angle = 180º/9 = 20º.
For the base angles, each of them have the same measure, which we are going to call x.
The sum of the measures of the internal angles is of 180º, hence the value of x can be found as follows:
20 + 2x = 180
2x = 160
x = 160/2
x = 80º.
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Solve the equation by graphing. Select each exact root. If the exact roots cannot be found, select the consecutive integers between which the roots are located. If there are no roots, select no real solution.
x2−4x+2=0
Multiple select question.
A)
between 0 and 1
B)
1
C)
no real solution
D)
between 3 and 4
E)
3
Answer:
sorry i think a
Step-by-step explanation:
14x + 1 + 14x + 1 + 38 = 180
Answer:
x = 5
Step-by-step explanation:
14x + 1 + 14x + 1 + 38 = 180 , that is
28x + 40 = 180 ( subtract 40 from both sides )
28x = 140 ( divide both sides by 28 )
x = 5
SOMEONEEEE HELPPP MEEEEE PLEASEEEE!!!!
Answer:
\({ \tt{ \tan(x) = \frac{opposite}{adjacent} }} \\ \\ { \tt{ \tan( \theta) = \frac{30}{16} }}\)
Look at the 2 fractions below. Find a common denominator between the 2 fractions. 3/5 and 2/3
Rachael took her dogs, Rico, Mocha, and Biscuit, to the vet. Rico weighed 45.7 kilograms, Mocha weighed 15.5 kilograms, and Biscuit weighed 22.1 kilograms. How much more did Rico weigh than Biscuit?
Subtraction is a mathematical operation that reflects the removal of things from a collection. The amount by which Rico weighs more than Biscuit is 23.6 kilograms.
What is subtraction?Subtraction is a mathematical operation that reflects the removal of things from a collection. The negative symbol represents subtraction.
Given Rico weighed 45.7 kilograms, Mocha weighed 15.5 kilograms, and Biscuit weighed 22.1 kilograms. Therefore, the amount by which Rico weighs more than Biscuit is,
Difference = 45.7 kgs - 22.1 kgs = 23.6 kgs
Hence, the amount by which Rico weighs more than Biscuit is 23.6 kilograms.
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Help me very fast!!!!!!! Damon’s car can go an average of 18 miles on each gallon of gas.
Choose the equation that models the situation, where m represents the number of miles and g represents the number of gallons of gas.
Answer:
m= 18g
Step-by-step explanation:
m = 18 × g
mark spent a total of $12.33 on 9 oranges and a packet of strawberries. if the packet of strawberries costs $2.88 how much did each orange cost
Answer: $1.05 per orange
Step-by-step explanation:
12.33 - 2.88 = 9.45
9.45 ÷ 9 = 1.05
hayden's book was 972 pages long.he had 12 days to read it.how many pages does he have to read every day to finish it ?
A study of child care enrolled 1364 infants and followed them through their sixth year in school. Later, the researchers published an article in which they stated that "the more time children spent in child care from birth to age four-and-a-half, the more adults tended to rate them, both at age four-and-a-half and at kindergarten, as less likely to get along with others, as more assertive, as disobedient, and as aggressive." $^{31}$ (a) Is this an observational study or an experiment? Justify your answer. (b) What are the explanatory and response variables? (c) Does this study show that child care causes children to be more aggressive? Explain.
(a) Is this an observational study or an experiment?
ans=Observational study – no treatment was imposed
(b) What are the explanatory and response variables?
ans=explanatory – time spent in child care from birth to age 4 response – adult rating of children’s behavior
d) Does this study show that child care causes children to be more aggressive? Explain.
No. Observational studies cannot show cause-and-effect
Researchers=someone whose job is to study a subject carefully, especially in order to discover new information or understand the subject better: She is a leading researcher in the field.
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help me for math..........
Answer:
A) -20
Step-by-step explanation:
\(4y(4y-4)-4(-4y+5+4y^2)\\\\16y^2-16y + 16y-20-16y^2\\\\-20\\\)
Enter the correct answer in the box. The graph shows function j, a transformation of f(x)= x^1/2
The required equation function j which is the transformation of \(f(x)= x^{1/2}\) is \(j(x)= (x+2)^{1/2}\) .
As we can see in the graph the functions j and f are similar but the graph of j is 2 units left of f. So, function f(x) has a domain of real number greater than equal to zero, while as the function j is 2 units left of f then its equation is given as \(j(x)= (x+2)^{1/2}\) where the domain of j is all real numbers greater then or equal to -2.
Thus, the equation of function j is the transformation of \(f(x)= x^{1/2}\) is \(j(x)= (x+2)^{1/2}\) .
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In the question the graph is missing, a graph has been added on behalf of the incomplete question.
3. At the Statsville County Fair, the probability of winning a prize in the ring-loss game is 0.1. a) Show the probability distribution for the number of prizes won in 8 games. b) If the game will be
we can conclude that if the game is played 8 times, the probability of winning X prizes is given by the binomial probability distribution and the probability distribution for X is 0.43, 0.39, 0.15, 0.03, 0, 0, 0, 0, 0. If the game is played 50 times, then the expected number of prizes won is 5.
a) Probability distribution of the number of prizes won in 8 games is given by the binomial probability distribution.
As the probability of winning a prize in one game is 0.1, probability of not winning a prize is 0.9.
If X is the number of prizes won in 8 games, then the probability of winning X prizes is given by the formula:
P(X = x)
= nC x * p ˣ* (1-p)ᵃ (a=n-x),
where n = 8, p = 0.1 and x varies from 0 to 8.
The probability distribution for X is as follows:
X 0 1 2 3 4 5 6 7 8
P(X) 0.43 0.39 0.15 0.03 0.00 0.00 0.00 0.00 0.00
b) If the game will be played 50 times, then the expected number of prizes won is given by the formula:
E(X) = n*p
= 50*0.1
= 5.
Therefore, we can expect 5 prizes to be won if the game is played 50 times.
Hence, we can conclude that if the game is played 8 times, the probability of winning X prizes is given by the binomial probability distribution and the probability distribution for X is 0.43, 0.39, 0.15, 0.03, 0, 0, 0, 0, 0. If the game is played 50 times, then the expected number of prizes won is 5.
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65°
3х + 4
78°
Find the x
Answer:
x=11
Step-by-step explanation:
65+3x+4+78=180
Combine like terms
147+3x=180
Subtract 147 on both sides
3x=33
Divide by 3
x= 11
Answer: 11 degrees
Step-by-step explanation:
65+3x+4+78=180
147+3x=180
3x=33
x=11
Which expression represents a quadratic expression in standard form? *
5x-4
-21-x^2
-15+2x-x^2
x^2-2x-63