Step-by-step explanation:
the surface area is the sum of the ground circle area (the top is left open) and the area of the curved mantle.
the area of the circle is
pi×r² = 22/7 × 5² = 25×22/7 = 550/7 cm² =
= 78.57142857... cm²
the area of the curved mantle is
2×pi×r × height = 2×22/7 × 5 × 12 = 2640/7 cm² =
= 377.1428571... cm²
the total surface area is the sum :
550/7 + 2640/7 = 3190/7 = 455.7142857... cm²
What is the equation of the line whose slope is 1/3 and y-intercept is -4?
Question 1 options:
y=−4x+13
y=13x−4
y−4=13x
3y=−4x
Answer:
y=1/3x-4
Step-by-step explanation:
the slope-intercept format of the line is y=mx+b, where m is the slope and b is the y intercept.
we are given the slope (1/3) and the y intercpet (-4).
substitute the numbers into the equation
y=1/3x-4
the answer is y=1/3x-4
hope this helps!
HELP PLEASE M BEGGNG
Answer:
Min: 1
Q1: 2
Median: 7
Q3: 9
Max: 11.5
Step-by-step explanation:
The five bars of the box plot correspond (from left-to-right) to the numbers in the five-number summary.
The first bar represents the minimum, which in this case is 1.
The second bar represents the first quartile (Q1), which in this case is 2.
The third bar represents the median, which in this case is 7.
The fourth bar represents the third quartile (Q3), which in this case is 9.
And the fifth bar represents the maximum, which in this case is 11.5.
Answer:
Min: 1
Q1: 2
Median: 7
Q3: 9
Max: 11.5
Step-by-step explanation:
I hope it helps:)
Write an equation in slope-intercept form for the line that goes between these two points: (-4, 8) and (-2,7)
EXPLANATION:
To find the equation we must follow the following steps:
1.First we must find the slope with the points given by the exercise.
2.Then we have to find b, with one of those points.
3.Finally we replace the values found in the equation for the slope.
The exercise is as follows:
Points: (-4, 8) and (-2, 7)
x1 y1 x2 y2
Now we must find the slope:
\(\begin{gathered} m=\frac{y2-y1}{x2-x1} \\ m=\frac{7-8}{-2-(-4)} \\ m=\frac{-1}{2} \end{gathered}\)Now using one of the points of the exercise and with the slope, we substitute in the equation of the line to find b.The point we are going to use is:(-4, 8)
\(\begin{gathered} y=mx+b \\ 8=\frac{-1}{2}(-4)+b \\ 8=\frac{4}{2}+b \\ 8=2+b \\ 8-2=b \\ 6=b \end{gathered}\)Since we already have b and the slope; now we can obtain the new equation of the line for the points given in the exercise; the equation is the following:
\(\begin{gathered} y=mx+b \\ y=\frac{-1}{2}x+6 \\ \text{ANSWER :}the\text{ equation of the line is: y}=\frac{-1}{2}x+6 \end{gathered}\)To check that it is ok, you have to give x values in the equation to get b; for example if we give a vamor x of any of the given points, it should give us the same value in y.
\(\begin{gathered} y=\frac{-1}{2}(-2)+6 \\ y=\frac{2}{2}+6 \\ y=1+6 \\ y=7 \\ \text{Then }for\text{ when }x\text{ is equal }to\text{ -2, y is equal }to\text{ 7} \end{gathered}\)We can say that the exercise was perfectly well developed by verifying the equation.
What is the new function’s equation (green)?
Answer:
\(f(x)=-(x+3)^2\)
Step-by-step explanation:
The parent function is f(x) = x^2.
This can be reasoned by the fact that this is a postive parabola that is on the origin.The green function is moved 3 units to the left. This means that the function changes like this:
\(x^{2}\) --> \((x+3)^2\)The green function is also reflected over the x-axis.
Functions that are reflected over the x-axis take are multiplied by an exterior negative (literally, a negative on the outside)
Ex; f(x) flipped over x-axis= -f(x)So, we put a negative on the outside.
\((x+3)^2\) --> \(-(x+3)^2\)
The function isn't moved up or downwards, so we don't have to add or subtract anything on the outside.
The function is also not stretched or shrunk.
So, the equation of the green function is:
\(f(x)=-(x+3)^2\)
A certain state uses the following progressive
tax rate for calculating individual income tax:
Income
Range ($)
Progressive
Tax Rate
0-3000
2%
3001 - 5000
3%
5001 - 17,000
5%
17,001 and up
5.75%
Calculate the state income tax owed on a $90,000
per year salary.
tax = $[?]
Round your answer to the nearest whole dollar amount.
Enter
Answer:
$4918
Step-by-step explanation:
You want the tax owed on $90,000 using the given tax rate table.
Tax computationThe tax is the sum of the amounts of tax due in each income range.
tax = 0.0575(90,000 -17,000) +0.05(17,000 -5000) +0.03(5000 -3000) +0.02(3000)
= 0.0575(90,000) -(17000(.0575 -.05) +5000(.05 -.03) +3000(.03 -.02))
= 0.0575(90,000) -(127.50 +100 +30)
= 5175 -257.50 = 4917.50
Rounded to the nearest dollar, the tax due is $4,918.
__
Additional comment
The tax will be the maximum of ...
0.02x0.03x -30 . . . . . . . . . . applicable over 30000.05x -130 . . . . . . . . . .applicable over 50000.0575x -257.50 . . . . applicable over 17000You can compute them all and find the maximum, or you can choose the function applicable to the income amount. The result is the same.
<95141404393>
Find the value of X that makes m n
8
x = 6
9
x=7
10
x= 15
see explanation in image
because you know that m and n are parralell you can use the vertical angle theorem as well as the fact that lines in a straight angle add to 180
if you have any questions just comment
please answer this correctly
Answer:
Step-by-step explanation:
Brazil : 12,500,000 = 5,000,000 + 5,000,000 + 2,500,000
= full cat + full cat + half cat
pls I need help in this exercise
Therefore ,a s a result, the answer to the given equation problem is that a carpet costs $2072.
Describe equation.When all of the highest powers of the variables are equal to one, an equation is said to be linear. The parts are linked together. Another name for this kind of problem is a one-degree equation. The following paragraphs will teach you how to solve a linear equation in one or two variables using the usual form, formula, graph, and directions.
Here,
Given :
50a + 12h is the floor area of a square foot.
where h is the amount of hours.
Thus.
When t=6 and a=40
So ,
the price of carpeting
=> Price = 50a plus 12h
=> Cost = 50*40 + 12*6
=> Cost = 2000 + 72
=> Cost = 2072
As a result, the answer to the given equation's problem is that a carpet costs $2072.
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Each volleyball set costs $63.74.
Which equation represents the cost, c, of n sets?
The equation that represents the cost, c, of n sets is c = 63.74n
Which equation represents the cost, c, of n sets?from the question, we have the following parameters that can be used in our computation:
Each volleyball set costs $63.74.
Let the total number of sets be n
So we have
Cost of n = 63.74 * n
This gives
c = 63.74n
Hence, the equation is c = 63.74n
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Which equation can be used to solve for x in the following diagram?
150°
102
9514 1404 393
Answer:
C 10x = 150
Step-by-step explanation:
The marked angles are vertical angles, so are congruent. The appropriate equation is the one that shows they are equal to each other:
10x = 150
75/6 hasta que el residuo sea cero
75/6 no puede tener un resto de cero ya que 6 solo entra en 7 12 veces con el resto de 3
The width of a rectangular slab of concrete is 14 m less than the length. The area is 32 m². What are dimensions of rectangle? The length of the slab?
The dimensions of the rectangular slab are 16 meters in length and 2 meters in width.
Let's assume the length of the rectangular slab of concrete is L meters. According to the given information, the width is 14 meters less than the length, so the width would be L - 14 meters.
The formula for the area of a rectangle is A = length × width. In this case, the area is given as 32 m², so we can set up the equation:
32 = L × (L - 14)
Expanding the equation, we get:
32 = L² - 14L
Rearranging the equation, we have:
L² - 14L - 32 = 0
To solve this quadratic equation, we can either factorize it or use the quadratic formula. In this case, it's easier to use the quadratic formula:
L = (-b ± √(b² - 4ac)) / (2a)
Here, a = 1, b = -14, and c = -32. Substituting these values into the formula, we get:
L = (14 ± √((-14)² - 4 × 1 × (-32))) / (2 × 1)
Simplifying further:
L = (14 ± √(196 + 128)) / 2
L = (14 ± √324) / 2
L = (14 ± 18) / 2
Therefore, we have two possible values for L:
L₁ = (14 + 18) / 2 = 16
L₂ = (14 - 18) / 2 = -2
Since the length of the slab cannot be negative, we discard the negative value.
Thus, the length of the rectangular slab is 16 meters. To find the width, we subtract 14 meters from the length:
Width = 16 - 14 = 2 meters
Therefore, the dimensions of the rectangle are 16 meters by 2 meters.
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Find the least common multiple (LCM) of 10 and 5.
what is the answer to 8221 - 2974
The answer: 8221 - 2974 = 5274
You are dealt one card from a standard 52-card deck. Find the probability of being dealt the ten of clubs.The probability of being dealt the ten of clubs is :
The statement says two important things
1. We must find the probability that the ten of clubs come out, this is a unique card that means that there is only one possibility among the deck.
2. The deck is 52-cards
That is to say that the probability that the ten of clubs come out is 1 among the total set of cards.
\(\frac{1}{52}=0.01923\)The probability of having the ten of clubs is 0.01923, If you want to see this as a percentage multiply the result by 100
\(0.01923\cdot100=1.923\)In conclusion, the probability of having the ten of clubs is 0.01923 and the probability of having the ten of clubs expressed in percentage is 1.923%
Renata is purchasing a condominium for $125,000. She wants to put down a down payment of 20%. Select all the true statements. The proportion that represents the down payment is 20100=125,000 20 100 = 125 , 000 x . The down payment is $25,000. The proportion that represents the down payment is 20100=125,000 20 100 = x 125 , 000 . The down payment is $50,000. The down payment is 15 1 5 of the cost of the house.
The correct options are -
The proportion that represents the down payment is : 20/100 x 125000.The down payment is $25,000What is down payment?When something is bought on credit, an initial payment is made in the form of a down payment.
Given is that Renata is purchasing a condominium for $125,000. She wants to put down a down payment of 20%.
We can calculate the amount she is putting in down payment as -
{x} = 20% of 125000
{x} = 20/100 x 125000
{x} = 20 x 1250
{x} = 25000
Therefore, the correct options are -
The proportion that represents the down payment is : 20/100 x 125000.The down payment is $25,000To solve more questions on functions & equations, visit the link-
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help pls
What is the average rate of change of the function on the interval from x = 3 to x = 5?
f(x)=10(2)x
Answer: 1560
Step-by-step explanation: The average rate of change of a function over an interval is the total change in the value of the function divided by the length of the interval. In this case, the function is f(x) = 10(2)^x and the interval is [3, 5].
To find the average rate of change of the function over the interval, we can first evaluate the function at the two endpoints of the interval, which are x = 3 and x = 5. At x = 3, the function has a value of f(3) = 10(2)^3 = 80. At x = 5, the function has a value of f(5) = 10(2)^5 = 3200.
The total change in the value of the function over the interval is then the difference between the values at the two endpoints, which is f(5) - f(3) = 3200 - 80 = 3120.
The length of the interval is 5 - 3 = 2, since it goes from x = 3 to x = 5. Therefore, the average rate of change of the function over the interval is the total change in the value of the function divided by the length of the interval, which is (3120) / 2 = 1560.
Therefore, the average rate of change of the function f(x) = 10(2)^x on the interval [3, 5] is 1560.
a television camera is positioned 4,000 ft from the base of a rocket launching pad. the angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. also, the mechanism for focusing the camera has to take into account the increasing distance from the camera to the rising rocket. let's assume the rocket rises vertically and its speed is 900 ft/s when it has risen 3,000 ft. (Round your answers to three decimal places.) (a) How fast is the distance from the television camera to the rocket changing at that moment? 480 ft/s (b) If the television camera is always kept aimed at the rocket, how fast is the camera's angle of elevation changing at that same moment? 0.002 rad/s
For the given height and distance the answer of the following questions are:
a. Change in distance between the camera to the rocket at that moment is equal to 540ft/sec.
b. Change in the angle of elevation is equal to 0.144rad/sec.
As given in the question,
Let 'α' be the angle of elevation
'h' be the height of the rocket
'x' be the distance between the camera and the rising rocket.
a. Relation between x , h, and 4000 ft during launching pad is given by Pythagoras theorem:
x² = h² + 4000²
Differentiate with respect to time 't' we get,
2xdx/dt = 2hdh/dt + 0 __(1)
When h = 3000ft
x² = 3000² + 4000²
⇒x = 5000ft
dh/dt = 900ft/s
Substitute all values in (1) we get,
2(5000)dx/dt= 2(3000)(900)
⇒dx/dt = 5,400,000/ 10,000
⇒dx/dt = 540ft/sec.
b. tanα = h/4000 __(2)
when h = 3000ft
tanα = 3/4
⇒α = 0.6435
Differentiate (2) with respect to t we get,
sec²α dα/dt = (1/4000) dh/dt
⇒sec²(0.6435) dα/dt = (1/4000)(900)
⇒dα/dt = (0.225)/ 1.5625
⇒dα/dt = 0.144 rad/ sec.
Therefore, for the given height and distance the answer of the following questions are:
a. Change in distance between the camera to the rocket at that moment is equal to 540ft/sec.
b. Change in the angle of elevation is equal to 0.144rad/sec.
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27% of all college students major in STEM (Science, Technology, Engineering, and Math). If 35 college students are randomly selected, find the probability that
a. Exactly 9 of them major in STEM.
b. At most 11 of them major in STEM.
c. At least 11 of them major in STEM
The probability of getting exactly 9 of them major in STEM is 0.139 or 13.9%.
The probability of getting at most 11 of them major in STEM is approximately 0.898 or 89.8%.
The probability of getting at least 11 of them major in STEM is approximately 0.318 or 31.8%.
a. Exactly 9 of them major in STEM.
In this case, the probability of success (a student majoring in STEM) is 0.27, and the number of trials is 35. The probability of exactly 9 students majoring in STEM is then given by the formula:
P(X = 9) = (35 choose 9) x (0.27)⁹ x (0.73)²⁶
where (35 choose 9) is the number of ways to choose 9 students out of 35, and (0.27)⁹ x (0.73)²⁶ is the probability of 9 successes and 26 failures. Evaluating this expression gives a probability of approximately 0.139 or 13.9%.
b. At most 11 of them major in STEM.
To calculate the probability that at most 11 students out of 35 major in STEM, we can use the cumulative binomial probability distribution. This distribution calculates the probability of at most X successes, where X is any number from 0 to the total number of trials.
The probability of at most 11 students majoring in STEM can be calculated as follows:
P(X <= 11) = P(X = 0) + P(X = 1) + ... + P(X = 11) = 0.898 or 89.8%.
c. At least 11 of them major in STEM.
The probability of less than 11 students majoring in STEM can be calculated using the cumulative binomial probability distribution, as in part (b). Specifically:
P(X < 11) = P(X = 0) + P(X = 1) + ... + P(X = 10)
Subtracting this probability from 1 gives the probability of at least 11 students majoring in STEM:
P(X >= 11) = 1 - P(X < 11) = 31.8%
Again, we can use the binomial distribution formula from part (a), or a binomial probability calculator or statistical software package to calculate this probability.
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The exact area of a circle is 2106.811 square miles.What is the radius?1mi
Answer:
\(r=26\text{ miles}\)Step-by-step explanation:
The area of a circle is represented by the following equation:
\(\begin{gathered} A_o=\pi\cdot r^2 \\ \end{gathered}\)If the exact area is 2106.811, plug it into the equation and solve for r(radius);
\(\begin{gathered} 2106.811=\pi\cdot r^2 \\ r=\sqrt[]{\frac{2106.811}{\pi}} \\ r=25.89 \\ \text{ Rounding:} \\ r=26\text{ miles} \end{gathered}\)If a person reads 2/5 chapter in 3/4 hours what's the unit rate per hour?
The unit rate per hour of the person that reads 2/5 chapter in 3/4 hours is 8/15 chapters per hour
How to determine the unit rate per hour?The given parameters are:
Chapters = 2/5
Time = 3/4 hours
The unit rate per hour of the person is represented as:
Unit rate per hour = Number of Chapters/Time
Substitute the known values in the above equation
Unit rate per hour = (2/5)/(3/4)
Express the quotient as products
Unit rate per hour = (2/5) * (4/3)
Evaluate the product
Unit rate per hour = 8/15
Hence, the unit rate per hour of the person that reads 2/5 chapter in 3/4 hours is 8/15 chapters per hour
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solve the equation: x2+7x=0
Answer: X=
Write your answers as a list of integers or reduced fractions, with your answers separated by (a) comma(s). For example, if you get
and
as your answers, then enter 4,-2/3 in the box.
The solution to the given equation x² + 7x = 0 is x = 0, -7.
What is a quadratic equation?The quadratic equation is defined as a function containing the highest power of a variable is two.
The quadratic equation is given in the question, as follows:
x² + 7x = 0
We have to determine the solution to the given equation.
As per the question, we have
x² + 7x = 0
x(x + 7) = 0
Equating factors to zero, we get
x = 0 and (x + 7) = 0
x = 0 and x = -7
Thus, the solution to the given equation is x = 0, -7.
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A group of volunteers has been collecting toys to deliver to a local charity. Over the last 5 days, the volunteers have collected 425 toys. What has been their collection rate, in toys per day?
Answer:
Their rate was 85 toys per day.Step-by-step explanation:
Given equation:
425 ÷ 5Now, let's solve the equation:
425 ÷ 5= 85Their rate was 85 toys per day.
Algebra transformation
f(x) =
f(x) =
f(x) =
f(x) =
Algebra transformation
for Graph1 f(x)=f(x)+4
for Graph2 f(x)=-f(x-4)
for Graph3 f(x)=f(x-7)
for Graph4 f(x)=f(x-2)-5
Define reflection of graphIn mathematics, the reflection of a graph is a transformation that produces a mirror image of the original graph across a specific line or point. The line or point across which the reflection occurs is called the axis of reflection.
Graph1
Transform the graph by +4 units in y direction.
f(x)=f(x)+4
Graph2
Transform the graph by +4 units in x direction.
f(x)=f(x-4)
Now take the reflection of graph about x axis
f(x)=-f(x-4)
Graph3
Transform the graph by +7 units in x direction.
f(x)=f(x-7)
Graph5
Transform the graph by -5 units in y direction.
f(x)=f(x)-5
Now Transform the graph by -2 units in x direction.
f(x)=f(x-2)-5
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Which of the following problems would NOT have a solution? Group of answer choices 10 divided by 2. 10 divided by 5. 10 divided by 0. 0 divided by 10.
10 divided by 0 problem would NOT have a solution.
Given:
a. 10 divided by 2
b. 10 divided by 5
c. 10 divided by 0
d. 0 divided by 10
We know that ,
Integer divided by an integer is an integer
Therefore (a) and (b) will have a proper solution
We also know that ,
Zero divided by anything is Zero
Therefore (d) also have a unique answer that is zero
Now , We know that
Any numeric value divided by Zero tends to infinity .
Hence, 10 divided by 0 problem would NOT have a solution.
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What is the greatest common factor of 12,18,26
HELP DUE IN 20 minutes
-4
-2
Ty
4
2
-2
-4
2
4
81
x
The graph of the function f(x) = -(x + 1)² is shown. Use
the drop-down menus to describe the key aspects of
the function.
The vertex is the
The function is positive
The function is decreasing
The domain of the function is
The range of the function is
The key aspects of the function f(x) = -(x + 1)² include the following:
The vertex is the maximum value (-1, 0)
The function is negative.
The function is decreasing x > -1.
The domain of the function is all real numbers or {-∞, ∞}.
The range of the function is {-∞, 0}.
What is a decreasing function?For any given function, y = f(x), if the output value (range) is decreasing when the input value (domain) is increased, then, the function is generally referred to as a decreasing function.
On the other hand, if the output value (range or y-value) is increasing when the input value (domain) is increased, then, the function is generally referred to as an increasing function.
By critically observing the graph above, we can reasonably infer and logically deduce that this function is decreasing over the interval x > -1 and the domain and range is given by:
Domain = {-∞, ∞}.
Range = {-∞, 0}.
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12
Select the correct answer.
The scatter plot represents the purchase prices and selling prices of X-ray machines made by five different manufacturers. Which of the following
points show errors of prediction or residuals?
OA.
OB.
O C.
O D.
Points (14, 25) and (15, 25)
Points (15, 25) and (18, 26)
Points (14, 25) and (16, 25)
Points (12, 24) and (18, 26)
Estimated Selling Price (in $1,000)
26.5
26-
25.5
25
24.5
24
23.5
10
11
12 13 14 15 16 17 18 19 20
Purchase Price (in $1,000)
The points on the scatter plot show the different predictions. The straight line drawn is called the line of regression.
Errors in prediction for each point can be determined by drawing a vertical line from the point to the line of regression. As seen in the image, all of the prediction points are found on the line except for points (14,25) and (16,25). Therefore, these points contain errors in prediction.
The graph that represent this data using the points is added as an attachment
From the question, we have the following parameters that can be used in our computation:
The x and y values
Where
x = stars
y = price
To determine the graph that represent the data, we enter the x and y values in a graphing tool to create the graph
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4) Which number is a factor
of 24 but not a multiple
of 6?