Answer:
The lateral surface area of the given square-based pyramid is 74 in².
Step-by-step explanation:
The lateral surface area of a three-dimensional object is the total surface area excluding the area of the base(s), so the total area of the "sides".
Therefore, the lateral surface area of a square-based pyramid is the sum of the area of the four triangular sides.
The area of a triangle is half the product of its base and height.
Therefore, the formula for the lateral surface area (L.S.A.) of a square-based pyramid is:
\(\boxed{\begin{minipage}{6 cm}\underline{L.S.A. of a square-based pyramid}\\\\$\sf L.S.A.= 2 \cdot s \cdot \ell$\\\\where:\\ \phantom{ww}$\bullet$ $s$ is the base length. \\ \phantom{ww}$\bullet$ $\ell$ is the slant height.\\\end{minipage}}\)
From inspection of the given diagram:
\(\ell = \sf 7.4\;in\)\(s=\sf 5\;in\)Substitute the given values into the formula to calculate the L.S.A. of the given square-based pyramid:
\(\begin{aligned}\implies \sf L.S.A.&=\sf 2 \cdot 5 \; in \cdot 7.4 \; in\\&=\sf 10 \; in \cdot 7.4 \; in\\&=\sf 74 \; in^2\end{aligned}\)
Therefore, the lateral surface area is 74 in².
The lateral area of the pyramid is approximately 74square inches.
What defines a pyramid's horizontal side?
The triangular faces of the pyramid that converge at the apex are known as the lateral faces. These are the four triangles that encircle the square base in the provided net. As a result, the entire area of the four triangles makes up the pyramid's lateral surface area.
According to the given information:To find the lateral area of a pyramid, we need to find the sum of the areas of all the triangular faces except for the base. The lateral area formula for a pyramid is given by:Lateral area = 0.5 × Perimeter of base × Slant height where the slant height is the height of each triangular face.
First, let's find the perimeter of the base. Since the base is a square with a side length of 5.1 inches, its perimeter is:
Perimeter of base = 4 × Side length = 4 × 5.1 in = 20.4
In Next,
let's find the slant height. We can use the Pythagorean theorem to find the slant height of each triangular face.
The slant height is the hypotenuse of a right triangle with one leg equal to half the base length (since the base is a square) and the other leg equal to the height of the pyramid.
Half the base length = 5.1 in / 2 = 2.55
In Using the Pythagorean theorem, we get:Slant height = √(2.55² + 7²) ≈ 7.45 In Finally,
we can use the lateral area formula to find the lateral area of the pyramid:
Lateral area = 0.5 × Perimeter of base × Slant height= 0.5 × 20.4 in × 7.45 in≈ 76.02 in²
Therefore, the lateral area of the pyramid is approximately 76.02 square inches. Which is near to 74
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help please i really appreciate it
Answer:
B linear
Step-by-step explanation:
If the rate of change stayed the same then it has to be a straight line so no C or D, and it cant be A be cause there is a rate of change.
test the series for convergence or divergence. [infinity] ∑ e^n / n^2 n=1
The series ∑ e^n / n^2, where n starts from 1 and goes to infinity, diverges. This means that the series does not have a finite sum and keeps growing indefinitely.
To determine the convergence or divergence of the series ∑ e^n / n^2, we can use various tests. One commonly used test is the comparison test.
When we compare the given series to a known series, such as the harmonic series or geometric series, we can see that the terms of the given series do not decrease or approach zero as n increases. In fact, the exponential term e^n grows exponentially, and the denominator n^2 increases at a much slower rate.
As a result, the terms of the series do not tend to zero, and we can conclude that the series diverges. In other words, the sum of the series goes to infinity as n approaches infinity. This indicates that the series does not have a finite sum and keeps growing indefinitely.
Therefore, the series ∑ e^n / n^2 diverges.
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what can we conclude if the global test of statistical significance for a regression model does not reject the null hypothesis?
We can draw the conclusion that there is insufficient evidence to support the idea that the model explains the relationship between the independent variable and dependent variables if the global test of statistical significance for a regression model does not reject the null hypothesis.
The global test of statistical significance for a regression model is used to assess the overall explanatory power of the model. If the global test of statistical significance does not reject the null hypothesis, this indicates that the model does not explain the relationship between the independent variable and dependent variables as expected. This could be due to a lack of sufficient data, a poorly constructed model, or simply a lack of correlation between the variables. In any case, the results of the test should be interpreted with caution, and further investigation into the model and data may be necessary.
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The function f(x)=1/6(2/5)^x is reflected across the y-axis to create the function g(x). Which ordered pair is on g(x)?
Answer:
the ordered pair (0, 1/6)
Step-by-step explanation:
To reflect a function across the y-axis, we replace every occurrence of x with -x. Therefore, the function g(x) is given by:
g(x) = f(-x) = 1/6(2/5)^(-x)
To find an ordered pair on g(x), we need to choose a value of x and evaluate g(x). For example, if we choose x = 0, then:
g(0) = 1/6(2/5)^(-0) = 1/6
Therefore, the ordered pair (0, 1/6) is on the graph of g(x).
please help meh
Find the coordinates of the centroid of the triangle with the given vertices. A(−10, 3), B(−4, 5), C(−4, 1)
The coordinates of the centroid of the triangle are:
Centroid = (-28/3, 3)
How to find the coordinates of the centroid?For a triangle whose vertices are (x₁, y₁), (x₂, y₂), and (x₃, y₃) has a centroid at:
Centroid = ( [x₁ + x₂ + x₃]/3, [y₁ + y₂ + y₃]/3)
Here we know that the vertices are A(−10, 3), B(−4, 5), C(−4, 1), then the coordinates of the centroid are:
Centroid = ( [-10 - 4 - 4]/3, [3 + 5 + 1]/3)
Centroid = ( -28/3, 9/3)
Centroid = (-28/3, 3)
These are the coordinates.
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Korey is planning to open a comic book store. In his first year of operation, Korey expects to average $1,000 of profit each month. He then expects profits to increase by 6% each year for the next 4 years. How much does Korey expect to make in profits in his fifth year of operation? A = P (1 r) superscript t a. $15,149.72 b. $16,058.71 c. $31,120.46 d. $32,987.69
Korey expect to make in profits in his fifth year of operation is $15,149.72. So, the correct answer is option A) $15,149.72.
To calculate Korey's expected profits in his fifth year of operation, we need to consider the expected growth rate of profits over the next four years.
Korey expects profits to increase by 6% each year for the next four years. To calculate his expected profits for each of the next four years, we can use the following formula:
Profit = Previous year's profit + (Previous year's profit x growth rate)
Using this formula, we can calculate Korey's expected profits for each of the next four years:
Year 1: $12,000 (average monthly profit of $1,000)
Year 2: $12,720 ($12,000 + ($12,000 x 0.06))
Year 3: $13,478.40 ($12,720 + ($12,720 x 0.06))
Year 4: $14,278.30 ($13,478.40 + ($13,478.40 x 0.06))
To calculate his expected profits in the fifth year, we can use the same formula:
Year 5: $15,149.72 ($14,278.30 + ($14,278.30 x 0.06))
Therefore, the correct answer is option A) $15,149.72.
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Answer:
A. ) 15,149.72
What is the surface area of the triangular prism.
Answer:480cm^3
Step-by-step explanation:
if written backwards, the number, one thousand, one hundred twenty-five, would be written five thousand, two hundred eleven.
True False
The statement "if written backwards, the number, one thousand, one hundred twenty-five, would be written five thousand, two hundred eleven " is true
The given statement is
If written backwards, the number, one thousand, one hundred twenty-five, would be written five thousand, two hundred eleven
We have to check the given statement is true or false
The given number is
One thousand one hundred and twenty five
Write the number in numeric terms
One thousand one hundred and twenty five = 1125
Write the number in backwards
= 5211
Then the number will be
Five thousand two hundred and eleven
Therefore, the given statement is true
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A circle has a circumference of 7{,}8507,8507, comma, 850 units. What is the radius of the circle?
Use 3. 14 for pi and enter your answer as a decimal
if the null hypothesis is 'french people do not differ from english people in height', what will be the alternative hypothesis?
The alternative hypothesis will be French people differ from English people in height.
A hypothesis is described in statistics as a formal statement that explains the relationship between two or more variables.
In statistical hypothesis testing, null and alternate hypotheses are applied. The null hypothesis of a test always predicts no effect or no association between variables, but the alternative hypothesis reflects the effect or relationship that your research predicts.
Given
Null hypothesis- French people do not differ from English people in height.
Therefore, the Alternative hypothesis for the given statement is - French people differ from English people in height.
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Marin spends 28% of her monthly income for a Loan payment. her loan payment is rupees 1,736. What is her monthly income?
Answer:
6200 rupees
Step-by-step explanation:
Think the monthly income x
According to the question
The equation is
x×28%=1736
x×28/100=1736
x=1736÷28/100
x=1736×100/28
x=62×100
x=6200
So monthly income is 6200 rupees
Answer:
\(6200\ Rupees\)
Step-by-step explanation:
\(We\ are\ given\ that,\\Percent\ of\ salary\ Marin\ spends\ for\ her\ loans=28 \% \\Amount\ of\ total\ payment\ on\ the\ loans= 1736\ rupees\\Hence,\\Let\ her\ monthly\ income\ be\ x\\Hence,\\The\ question\ also\ tells\ us\ that:\\28 \%\ of\ Marin's\ Monthly\ Income= Loan\ Payment\\Or,\\28 \%\ of\ x=1736\\Hence\ as\ 28 \%\ can\ also\ be\ represented\ as: \frac{28}{100},\\\frac{28}{100}*x=1736\\Hence\ by\ multiplying\ the\ LHS\ and\ RHS\ with\ \frac{100}{28},\\\)
\(\frac{28}{100}*\frac{100}{28}*x=1736*\frac{100}{28}\\Hence,\\x=62*100\\x=6200\\\)
if x=5, y=-3, and z=-7 z=-7, evaluate 3x^2-9y/yz
Solve for p.
7/p = 8/9
Answer:
Exact Form:
p=63/8
Decimal Form:
p=7.875
Mixed Number Form:
p=7 7/8
Hope this helps :-)
Simplify: (sin θ − cos θ)^2 − (sin θ + cos θ)^2 A) −4sin(θ)cos(θ) B) 2 C) sin^2 θ D) cos^2 θ
Answer:
-4sinθcosθ
Step-by-step explanation:
Note:
1. (a + b)^2 = a^2 + 2ab + b^2
2. (a - b)^2 = a^2 - 2ab + b^2
3. sin^2θ + cos^2θ = 1
(sinθ -cosθ)^2 - (sinθ + cosθ)^2
= sin^2θ - 2sinθcosθ + cos^2θ - (sin^2θ + 2sinθcosθ + cos^2θ)
= sin^2θ + cos^2θ - 2sinθcosθ - (sin^2θ + cos^2θ + 2sinθcosθ)
= 1 - 2sinθcosθ - (1 + 2sinθcosθ)
= 1- 2sinθcosθ -1 - 2sinθcosθ
= - 2sinθcosθ - 2sinθcosθ
= -4sinθcosθ
poem about relation in math
Answer:
in math what type of poem???
Emilio works for the parks department of West Palm City. He tracked how many emails the
mayor received about the city's parks each day last month. This box plot shows the results.
Emails received
10
20
30
40
50
60
What percent of the time did the mayor receive between 25 and 50 emails?
Answer:
The answer is 50%.
Step-by-step explanation:
I did the question on IXL, and got it right.
Wouldn’t it be 120 degrees too?
Answer:
I think you would be right.
The altitude of Object B is 16 times the altitude of Object A. The altitude of Object A is 4 ଷfeet. What is the altitude of Object B? Write your answer as a power.
Answer:
\(B=4^{3} feet\)
Step-by-step explanation:
The altitude of B = 16A and we now that A = 4 feet.
Finally B will be:
\(B=4^{2}*4=4^{3} feet\)
I hope it helps you!
Can anyone help me please
Answer:
this pattern is ver simple very easy
Mariah took 4 quizzes in her class during the past month. Her scores were 92, 94, 100, and 83. What was her mean quiz score?
Answer:
Her mean quiz score is 92.25%.
Answer:
92.25
Step-by-step explanation:
Mean is the same as average. Add all the scores together and then decide by the number of scores.
(92+94+100+83)÷4
369÷4=92.25
0.78 / 0.16614 please
Answer:
4.695
Step-by-step explanation:
multiply top and bottom by 100, 000 to clear any decimal places
now we have 78, 000 / 16,614
= 4.695 (3 decimal places).
What does it mean if (3, 2) is a solution of
{
y = x - 1
y = -x + 5
?
(x,y) = (3,2)
y = x - 1
2 = 3 - 1
2 = 2
y = -x + 5
2 = -3 + 5
2 = 2
If (3, 2) is a solution of the system y = x - 1 and y = - x + 5 then the ordered pair (3, 2) satisfies both equations simultaneously.
What is the graphical solution of a system of equations?Graphical solutions of a system of equations are way of finding the intersection points of all the equations given.
A system with two or more than two equations has a solution only when they have a common intersection point.
Given, The system of equation y = x - 1 and y = - x + 5 has a
solution (3, 2).
If the ordered pair (3, 2) is a solution of both equations this implies that this ordered pair satisfies both equations simultaneously.
For,
y = x - 1.
At, x = 3,
y = 3 - 1
y = 2 (satisfied).
For,
y = - x + 5.
At, x = 3,
y - 3 + 2.
= 2 (satisfied).
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Factor the following expression: 16z+20
Answer:
4z + 5
Step-by-step explanation:
16 and 20 are both dividable by 4, so you divide them both by four and then you have your answer
Answer:
4(4z + 5)
Step-by-step explanation:
Given
16z + 20 ← factor out 4 from each term
= 4(4z + 5) ← in factored form
The information used in the DSS can be obtained from various sources. Discuss. (12)
Decision Support Systems (DSS) draw information from a variety of sources, including internal data generated within the organization and external data obtained from outside sources. Internal data encompasses data such as sales figures, financial statements, and customer records, providing an organization-specific view. External data includes market research reports, industry benchmarks, and government data, offering a broader context and insights into market trends and customer preferences. DSS can also utilize external databases and sources, such as data aggregators and public repositories, to access specialized data sets. By combining internal and external data sources, DSS can provide comprehensive decision support, enabling organizations to make informed choices based on a wide range of information.
Decision Support Systems (DSS) rely on a wide range of data sources to provide valuable information for decision-making processes. These sources can be categorized into internal and external data, each offering unique perspectives and insights.
Internal data refers to information generated and stored within an organization. This data can include sales figures, financial statements, customer records, inventory levels, and employee performance data. Internal data provides an organization-specific view and can be readily accessible for analysis within the DSS.
External data, on the other hand, encompasses information obtained from sources outside the organization. It can include market research reports, industry benchmarks, economic indicators, government data, social media feeds, and customer feedback. External data offers a broader context and helps organizations gain insights into market trends, competitor analysis, customer preferences, and regulatory changes.
Furthermore, DSS can also tap into various external databases, such as data aggregators, research institutions, and public repositories. These sources provide specialized data sets related to specific industries, demographics, geographies, or subjects of interest. By integrating these external sources, DSS can enhance its analytical capabilities and provide comprehensive decision support.
In conclusion, the information used in a Decision Support System can be obtained from both internal and external sources. By leveraging internal data and tapping into external databases and sources, DSS can provide a holistic and informed perspective for decision-making processes.
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write an equation of the line that passes through the points (0,3) and (2,11) y=?
Answer:
y=4x+3
Step-by-step explanation:
find the slope using y2-y1/x2-x1
11-3/2-0
simplify
8/2
simplify
4
find b by using the equation y=mx+b
since we know 4 is the slope, plug it in for m
plug an ordered pair into y=4x+b
3=4(0)+b
3=b
plug b in y=4x+b
y=4x+3
If x and b are the roots of ax^2 - bx + c then calculate x + b
Answer:
Step-by-step explanation:
Given the function f(x)= -5x^{2} - x + 20, find f(3)
An instructor wants to determine if a longer lesson would improve student test scores. Which variable would be theexplanatory variable?A. The quality of the lessonB. The length of the lessonC. Student test scoresD. The number of students in the class
The explanatory variable in this scenario would be B. The length of the lesson.
An explanatory variable is one that is used to explain or predict the outcome of a dependent variable.
In this case, the instructor wants to determine if a longer lesson would improve student test scores.
Therefore, the length of the lesson is the explanatory variable because it is being used to predict or explain the outcome of the dependent variable, which is the student test scores.
The other options, the quality of the lesson, the number of students in the class, and the student test scores, are not being used to explain or predict the outcome of the dependent variable, so they are not the explanatory variable.
Hence, the correct answer is, option B: The length of the lesson.
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Four different objects are placed on a number line at 0. The chart describes the motion of each object
Motion
3 units left, then 3 units right
6 units right, then 18 units right
8 units left, then 24 units right
16 units right, then 8 units left
Object
W
X
Y
Z
Using the information in the chart, the distance and displacement of each object can be determined. Which object
has a distance that is three times as great as its displacement?
DW
Y
OZ
The object whose distance is three times its displacement is object Z.
How to find the distance of the object on the coordinate?The distance is defined as a scalar quantity representing the total distance traveled.
Displacement is a vector representing the distance between the end and start points.
Distance, Displacement, Ratio To calculate r = 3
Object Motion Distance Displacement ratio
X 3 units left, 3 units right 3 + 3 = 6 3 - 3 = 0 ∞
Y 6 units right, 18 units right 6 + 18 = 24 6 + 18 = 24 1
W 8 units left, 24 units right 8 + 24 = 32 -8 + 24 = 16 2
Z 16 units right, 8 units left 16 + 8 = 24 16 - 8 = 8 3
Ratio is calculated by dividing the distance by the displacement.
distance/displacement.
For object Z it is 24/8 = 3. So the object whose distance is three times its displacement is object Z.
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Find the general solution for the ODE: xdy - – [y + xy? (1 + Inx)dx ) = 0 3] -
To find the general solution for the given ordinary differential equation (ODE):
xdy - [y + xy^(2)(1 + ln(x))]dx = 0
We can rearrange the terms and separate the variables:
xdy = [y + xy^(2)(1 + ln(x))]dx
Dividing both sides by x and rearranging the terms:
dy/y + y(ln(x) + 1)dx = dx
Now, let's integrate both sides:
∫(dy/y) + ∫[y(ln(x) + 1)]dx = ∫dx
Integrating the left-hand side with respect to y and the right-hand side with respect to x:
ln|y| + y(ln(x) + 1) = x + C
where C is the constant of integration.
We can simplify the equation further:
ln|y| + yln(x) + y = x + C
Combining the logarithmic terms:
ln|y| + yln(x) = x + C - y
To eliminate the logarithm, we can take the exponential of both sides:
e^(ln|y| + yln(x)) = e^(x + C - y)
Using the properties of exponents:
|y| * x^y = e^(x + C - y)
We can rewrite the absolute value expression as a piecewise function:
y * x^y = e^(x + C - y) if y > 0 -y * x^(-y) = e^(x + C - y) if y < 0
So, the general solution to the given ODE is the combination of these two equations:
y * x^y = e^(x + C - y) if y > 0 -y * x^(-y) = e^(x + C - y) if y < 0
These equations represent the family of solutions to the given ordinary differential equation (ODE).
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