Answer:
Even though only 6% of students scored higher than Karl, we cannot know his personal score based on his percentile. He could have gotten a 62, as long as everyone else [94% of the class] got an even lower score.
So, we cannot know Karl's mark, we are only able to understand Karl's score in relation to the rest of the students in his law course.
An event manager recorded the number of people in different age groups who attended a music concert:
A histogram titled Concert Audience is shown. The horizontal axis is labeled Age Group in years with bins 18 to 24, 25 to 31, 32 to 38, and 39 to 45. The vertical axis labeled Number of People with values from 0 to 120 at intervals of 20. The first bin goes to 80, the second goes to 120, the third goes to 40, and the last goes to 20.
Which data table accurately represents the data in the histogram?
A:
Age Group Number of People
18–24 80
25–31 120
32–38 40
39–45 20
B:
Age Group Number of People
18–24 80
25–31 200
32–38 240
39–45 260
C:
Age Group Number of People
18–24 20
25–31 40
32–38 120
39–45 80
D:
Age Group Number of People
18–24 260
25–31 240
32–38 200
39–45 80
Answer: C) Age Group Number of People:
18–24 20
25–31 40
32–38 120
39–45 80
Have a good day/night! I hoped this helped. :D
Answer:
A:
18–24: 8025–31: 12032–38: 4039–45: 20Step-by-step explanation:
You want to know the table that accurately reflects the data in the described graph.
MatchingAs presented here, this is a reading comprehension problem.
The problem statement tells you the first bin is labeled 18–24, and the graph there extends to 80. This eliminates tables C and D. Tables A and B show 80 people in the 18–24 age group.
The second bin is labeled 25–31, and the graph there extends to 120. This matches the entry in Table A.
Table A matches the graph.
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If a widget factory as a fixed operating cost of $2,500 per day plus a cost of $1.50 per widget produced. If a widget sells fro $5.00, what is the least number of widgets that must be sold per day to make a profit?
At least 714 numbers of widgets must be sold per day to make a profit.
Given fixed operating cost = $2,500 per day cost of widget =$ 1.50
widget sells = $ 5.00
Cost function = C(X)=1.50x+2500
Revenue function = R(X)=5 x
At Break Even point R (X) = C (X)5
X= 1.50X+25003.5
X =2500X =714
hence to reach break even point or make profit 714 no to be sold.R(714)= 3571.
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What is the slope of a line that is perpendicular to the line shown on the graph?
Answer:
4
Step-by-step explanation:
The slope of the line in the image is -1/4. I found that by starting at the point (0,2) and moving down 1, and right 4. This is because slope is rise over run, meaning that you move up/down and then right/left. You can see that the line is sloping downwards, so it is negative.
Perpendicular lines have a slope that is the opposite reciprocal, meaning the sign is opposite and the numerator and denominator are flipped (reciprocal). The current slope is -1/4, so the reciprocal is -4/1 (or just -4). Then just make the negative positive and you get 4.
please help me solve what is on that document
The most misleading graph is graph B because the blue rectangle and the red rectangle do not have the same width when plotted on the same scale
The ratio of the median weekly earningsFrom the graph, we have the median weekly earnings to be:
High school diploma = $750Bachelor's degree = $1250So, the ratio is:
Ratio = $750 : $1250
Simplify
Ratio = 3 : 5
Hence, the ratio of the median weekly earnings is 3 : 5
The ratio of the area of the red rectangle to the blue rectangle in graph A?
In (a), we have:
Ratio = 3 : 5
The scale on the horizontal axis is given as:
1 unit per grid mark
Both rectangles have a width of 1 unit.
So, we have:
Ratio = 3 * 1: 5 * 1
Simplify
Ratio = 3 : 5
Hence, the ratio of the area of the red rectangle to the blue rectangle in graph A is 3 : 5
The ratio of the area of the red rectangle to the blue rectangle in graph B?In (a), we have:
Ratio = 3 : 5
The scale on the horizontal axis is given as:
1 unit per grid mark
The red rectangle has a width of 3 units, while the blue has 5 units as its width
So, we have:
Ratio = 3 * 3 : 5 * 5
Simplify
Ratio = 9 : 25
Hence, the ratio of the area of the red rectangle to the blue rectangle in graph B is 9 : 25
The ratio of the volume of the red cube to the blue cube in graph C?
In (a), we have:
Ratio = 3 : 5
The scale on the horizontal axis is given as:
1 unit per grid mark
The red rectangle has a width of 3 units, while the blue has 5 units as its width.
Since the base are squares, we have:
Ratio = 3 * 3 * 3 : 5 * 5 * 5
Simplify
Ratio = 27 : 125
Hence, the ratio of the volume of the red cube to the blue cube in graph C is 27 : 125
The most misleading graph
The most misleading graph is graph B.
This is so because the blue rectangle and the red rectangle do not have the same width when plotted on the same scale
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Can someone answer this
The order of the graphs from largest to lowest correlation coefficients is:
Graph D, Graph A, graph C, graph B.
Which graph has the largest correlation coefficient?The correlation coefficient between two variables is a coefficient that tells us "how much" these variables relate.
So, in the case for linear correlation, as "more linear" the data appears to be, a large correlation is between the two variables.
With that in mind, we conclude that the order of the graphs (going for larger correlation coefficient to smaller correlation coefficient) is:
Graph D, Graph A, graph C, graph B.
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if the figure forms the base of a right solid 110 centimeters high, find the surface area
Answer:
[tex]60200cm^{2}[/tex]
Step-by-step explanation:
(I am assuming that the units for the measurements in this question are all centimeters)
Surface area = 2 * (Area of Base) + (Perimeter of base)*(Height)
First, we'd need to solve for the area of the base by finding the area of the triangle and subtracting it from the area of the rectangle. The area of the rectangle is [tex]100 * 150 = 15000[/tex]. The area of the triangle is [tex]\frac{1}{2} * 120 * 90 = 5400[/tex]. (We can do this because it is a right triangle with leg lengths in the pattern of a 3-4-5 triangle.) Now, subtracting the area of the triangle from the rectangle, we get [tex]15000 - 54000 = 9600[/tex]. This is the area of the base.
Next, the perimeter of the base is [tex]100 + 150 + 90 + 120 = 460[/tex]. Multiplying this by the height, we get [tex]460 * 110 = 50600[/tex].
Finally, we add 9600 and 50900 to get [tex]9600 + 50900 = 60200[/tex].
Please help me!!! I will give brainliest to the correct answer.
Given:
EA = 2EC = 3EB = EA + AB = 2 + 10 = 12ED = EC + CD = 3 + yFormula:
AB × AD = AC × AE
Here if applied:
EA × EB = EC × ED
2 × 12 = 3 × (3 + y)
24 = 9 + 3y
3y = 15
y = 5
Answer:
y = 5
Step-by-step explanation:
Secant: a straight line that intersects a circle at two points.
Segment: part of a line that connects two points.
The given diagram shows two secant segments EB and ED drawn to the circle from one exterior point E. Therefore, using the Intersecting Secants Theorem, the product of the measures of one secant segment and its external part is equal to the product of the measures of the other secant segment and its external part.
⇒ EB · EA = ED · EC
⇒ (2 + 10) · 2 = (3 + y) · 3
⇒ (12)2 = 3(3 + y)
⇒ 24 = 9 + 3y
⇒ 15 = 3y
⇒ y = 5
If a line has a slope of 4 and goes through the point open parentheses short dash 1 comma 1 close parentheses, then the equation for the line in slope-intercept form is ______________.
a.)
y equals short dash 4 x minus 3
b.)
y equals 4 x plus 3
c.)
y equals 4 x plus 5
d.)
y equals short dash 4 x minus 5
A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of the line will be y =4x+5. Thus, the correct option is C.
What is the equation of a line?A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely. The equation of a line is given by,
y =mx + c
where,
x is the coordinate of the x-axis,
y is the coordinate of the y-axis,
m is the slope of the line, and
c is the y-intercept.
Given the slope of the line is 4 and it goes through (-1,1), therefore, the equation of the line will be,
y = mx + c
y = 4x + c
Substitute the value of points,
1 = 4(-1) + c
1 = -4 + c
5 = c
Hence, the equation of the line will be y =4x+5. Thus, the correct option is C.
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Convert the following angle from degrees to radians. Express your answer in simplest
form.
495°
Answer:
11/4 Pi
Step-by-step explanation:
because 1.= 70/180. (180.=Pi)
so 495 x 70/180
=11/4 Pi
Find the equation of the line that is perpendicular to y=-2x-9 and contains the points (8,-4)
The slope of the given line is -2, and since perpendicular lines have negative reciprocal slopes, the slope of the line we want to find is 1/2.
Substituting into point-slope form,
[tex]y+4=\frac{1}{2}(x-8)\\\\y+4=\frac{1}{2}x-4\\\\\boxed{y=\frac{1}{2}x-8}[/tex]
Answer:
Equation of line perpendicular to y= -2x-9 is y=x/2-8 .
Step-by-step explanation:
The slope of a line gives the measure of its steepness and direction. The slope of a curve at a point is equal to the slope of the straight line that is tangent to the curve at that point.
The general equation of a line is y = mx + c, where m is the slope of the line and c is the y-intercept. It is the most common form of the equation of a straight line that is used in geometry.
The product of slopes of two perpendicular lines gives (-1).
m1m2=(-1)
(-2)m2=(-1)
m2=1/2
y=m2x+c
Point (8,-4) satisfies the given equation :
(-4)=1/2 x 8 + c
c = (-8)
Line perpendicular to y= -2x-9 will be -
y=x/2-8
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The age of trees in a forest is known to be approximately normal with an average age of 40 years and a standard
deviation of 10 years. What is the standardized score for a tree that is 34 years old?
A. 1.90
B.-0.60
C. -1.90
D. 0.60
Answer:
B -o.60
Step-by-step explanation:
34 - 40 = -6. -6 divide by 10 = -3/5 or - 0.6. So answer is B
1-tan^2(x)/sec^2 = cos(2x)
By applying the formula of trigonometric function the right hand side will
be equal to right hand side which is 1-[tex]tan^{2} x[/tex]/[tex]sec^{2}x[/tex]=cos2x.
Given: 1-[tex]tan^{2} x[/tex]/[tex]sec^{2}x[/tex]=cos2x.
Taking right hand side first which is cos2x.
We know that cos2x=[tex]1-tan^{2}x/1+tan^{2}x[/tex]
Now we will solve the left hand side of the equation give which is
1-[tex]tan^{2} x[/tex]/[tex]sec^{2}x[/tex]
=1-[tex]tan^{2}x[/tex]/1+[tex]tan^{2}x[/tex]
[secant square x minus tangent square x is equal to 1]
By putting both values left hand side and right hand side we will find our solution which is :
1-tan^{2}x/1+tan^{2}x=1-[tex]tan^{2}x[/tex]/1+[tex]tan^{2}x[/tex].
Hence proved
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Help please!! I’m stuck with these questions. :)
Answer:
20 elements.
Step-by-step explanation:
Lets say
n(U) = 114
n(A) = 57
n(B) = 79
n(A n B)= 42
Now,
n(A U B) = n(A) + n(B) - n(A n B)
= 57 + 79 - 42
= 94
Now,
n(A U B) compliment = n(U) - n(A U B)
= 114 - 94
= 20
A treasure map says that a treasure is buried so that it partitions the distance between a rock and a tree in a 5:9 ratio. Marina traced the map onto a coordinate plane to find the exact location of the treasure.
x = (StartFraction m Over m + n EndFraction) (x 2 minus x 1) + x 1
y = (StartFraction m Over m + n EndFraction) (y 2 minus y 1) + y 1
What are the coordinates of the treasure? If necessary, round the coordinates to the nearest tenth.
(11.4, 14.2)
(7.6, 8.8)
(5.7, 7.5)
(10.2, 12.6)
Using proportions, it is found that the coordinates of the treasure as given as follows: (7.6, 8.8).
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Researching the problem on the internet, the coordinates are as follows:
Rock (3,2).Treasure (x,y).Tree (16,21).The treasure is buried between a rock and a tree in a 5:9 ratio, hence the expression is:
[tex]Ts - R = \frac{5}{14}(Tr - R)[/tex]
Hence, for the x-coordinate:
[tex]x - 3 = \frac{5}{14}(16 - 3)[/tex]
x - 3 = 5 x 13/14
x = 7.6.
For the y-coordinate:
[tex]y - 2 = \frac{5}{14}(21 - 2)[/tex]
y - 2 = 5 x 19/14
y = 8.8.
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Answer: the answer is b
Step-by-step explanation:
Item at position 9
The lifetimes of 20,000 light bulbs are normally distributed. The mean lifetime is 230 days. The standard deviation is 40 days. Find the values defined by standard deviation in a normal distribution for 3 standard deviations.
Using the normal distribution, the values within 3 standard deviations of the mean are given 110 to 350.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.The mean and the standard deviation are given, respectively, by:
[tex]\mu = 230, \sigma = 40[/tex].
The bounds of the values within 3 standard deviations of the mean are given by X when Z = -3 and X when Z = 3, hence:
Z = -3:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]-3 = \frac{X - 230}{40}[/tex]
X - 230 = -3(40)
X = 110.
Z = 3:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]3 = \frac{X - 230}{40}[/tex]
X - 230 = 3(40)
X = 350.
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NEED HELP ASAP WILL MARK BRAINLIEST!
Answer:
[tex]\boxed {1)log_{b}(75) = 4.317}[/tex]
[tex]\boxed {2)ln(20) = 2.9957}[/tex]
Step-by-step explanation:
[tex]\textsf {Question l :}[/tex]
[tex]\longrightarrow \mathsf {log_{b}(3) = 1.099}[/tex]
[tex]\longrightarrow \mathsf {log_{b}(5) = 1.609}[/tex]
[tex]\textsf {Identities applied :}[/tex]
[tex]\boxed {log(ab) = loga + logb}[/tex]
[tex]\boxed {log(a)^{x} = xloga}[/tex]
[tex]\textsf {We can rewrite the problem as :}[/tex]
[tex]\longrightarrow \mathsf {log_{b}(75)}[/tex]
[tex]\longrightarrow \mathsf {log_{b}(25 \times 3)}[/tex]
[tex]\longrightarrow \mathsf {log_{b}(5^{2} \times 3)}[/tex]
[tex]\longrightarrow \mathsf {log_{b}(5)^{2} + log_{b}(3)}[/tex]
[tex]\longrightarrow \mathsf {2log_{b}(5) + log_{b}(3)}[/tex]
[tex]\textsf {Now, substitute the values :}[/tex]
[tex]\longrightarrow \mathsf {2(1.609) + (1.099)}[/tex]
[tex]\longrightarrow \mathsf {3.218 + 1.099}[/tex]
[tex]\longrightarrow \mathsf {4.317}[/tex]
[tex]\boxed {log_{b}(75) = 4.317}[/tex]
[tex]\textsf {Question ll :}[/tex]
[tex]\longrightarrow \mathsf {ln(4) = 1.3863}[/tex]
[tex]\longrightarrow \mathsf {ln(5) = 1.6094}[/tex]
[tex]\textsf {Rewriting the problem :}[/tex]
[tex]\longrightarrow \mathsf {ln(20)}[/tex]
[tex]\longrightarrow \mathsf {ln(4 \times 5)}[/tex]
[tex]\longrightarrow \mathsf {ln(4) + ln(5)}[/tex]
[tex]\longrightarrow \mathsf {1.3863 + 1.6094}[/tex]
[tex]\longrightarrow \mathsf {2.9957}[/tex]
[tex]\boxed {ln(20) = 2.9957}[/tex]
Answer:
[tex]\sf \log_b(75)=4.317[/tex]
[tex]\sf \ln (20)=2.9957[/tex]
Step-by-step explanation:
Question 1
Given:
[tex]\sf \log_b(3)=1.099[/tex]
[tex]\sf \log_b(5)=1.609[/tex]
To evaluate [tex]\sf \log_b(75)[/tex], replace 75 with (5 × 5 × 3):
[tex]\implies \sf \log_b(5 \cdot 5 \cdot 3)[/tex]
[tex]\textsf{Apply the Product log law}: \quad \log_axy=\log_ax + \log_ay[/tex]
[tex]\implies \sf \log_b5+\log_b5+\log_b3[/tex]
Substitute the given values to solve:
[tex]\implies \sf 1.609 + 1.609 + 1.099=4.317[/tex]
Question 2
Given:
[tex]\sf \ln(4)=1.3863[/tex]
[tex]\sf \ln(5)=1.6094[/tex]
To evaluate ln(20) replace 20 with (4 × 5):
[tex]\implies \sf \ln (4 \cdot 5)[/tex]
[tex]\textsf{Apply the Product log law}: \quad \ln xy=\ln x + \ln y[/tex]
[tex]\implies \sf \ln (4)+\ln (5)[/tex]
Substitute the given values to solve:
[tex]\implies \sf 1.3863+1.6094=2.9957[/tex]
please help me. 50 pts
Which quantity is multiplied by pi () in the formula for the area of a circle?
A. d
OB. 2
O c. d
D. r
Option: B
The area of a circle is pi times the radius squared (A = π r²).
An empty rectangular tank was 25 cm long, 23 cm wide and 18 cm high. Ravi filled 5 identical bottles with water to the brim. Then he poured all the water from the 5 bottles into the empty tank and the tank became What was the capacity of each bottle? height of water, = = 1/2 X 18 3 23 cm Co 25 cm 3 full. 18 cm 2 An empty rectangular tank was 25 cm long , 23 cm wide and 18 cm high . Ravi filled 5 identical bottles with water to the brim . Then he poured all the water from the 5 bottles into the empty tank and the tank became What was the capacity of each bottle ? height of water , = = 1/2 X 18 3 23 cm Co 25 cm 3 full . 18 cm
Select all the correct answers. Function g is a transformation of the parent exponential function. Which statements are true about function g? A Linear graph function where red line g intercepts y-axis at (0, 4) and passes through (minus 10, 3) and (3, 10) Function g is positive over the interval . The domain of function g is . Function g has a y-intercept of . Function g decreasing over the interval . Function g is 4 units above function f. The range of function g is .
The correct statements are:
Function g has a y-intercept of (0,4)
The range of the function g is (3, ∞).
The function g is positive over the interval (-∞ , ∞ ).
The parent function i.e. exponential function is defined by:
y=f(x)=aˣ
From the graph given below,
1. The graph of the function g is 3 units above the graph of the parent exponential function. as the parent exponential function aˣ cuts the y-axis at (0,1) and the child transformed function cut at (0,4) for which g is 4-1=3 units above the parent function
2. The domain of the function is set of all the inputs for which function is defined. From the graph of function g, it is clear tha the domain of the function is (-∞ , ∞ ) as the domain of the parent exponential function is also (-∞ , ∞ ).
3. The y-intercept is the point at which function cut the y-axis. Graph of function g cut the y-axis at (0, 4). Therefore, Function g has the y-intercept at (0,4).
4. From the graph it is clear that Function g increases over the interval (-∞, 0) .
5. The range of the function is the output values of the function. From the graph, it is observed that the range of function g is (3, ∞). as its minimum value is 3 then the maximum value is ∞.
6. As, the graph of function g is drawn above the x-axis. Therefore, Function g lies completely on +ve y-axis, so function g is positive over the interval (-∞ , ∞ ).
Therefore The correct statements are:
Function g has a y-intercept of (0,4)
The range of the function g is (3, ∞).
The function g is positive over the interval (-∞ , ∞ ).
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determine weather y varies directly with x. if so find the constant of variation and write the equation
This directly proportional relationship between p and q is written as p∝q where that middle sign is the sign of proportionality. The correct option is B.
What is the directly proportional and inversely proportional relationship?Let there are two variables p and q
Then, p and q are said to be directly proportional to each other if
p = kq
where k is some constant number called the constant of proportionality.
This directly proportional relationship between p and q is written as p∝q where that middle sign is the sign of proportionality.
In a directly proportional relationship, increasing one variable will increase another.
Now let m and n be two variables.
Then m and n are said to be inversely proportional to each other if
[tex]m = \dfrac{c}{n} \\\\ \text{or} \\\\ n = \dfrac{c}{m}[/tex]
(both are equal)
where c is a constant number called the constant of proportionality.
This inversely proportional relationship is denoted by
[tex]m \propto \dfrac{1}{n} \\\\ \text{or} \\\\n \propto \dfrac{1}{m}[/tex]
As visible, increasing one variable will decrease the other variable if both are inversely proportional.
Since the graph of the equation is a line, therefore, it can be concluded that the relationship is linear as a result y varies directly with x.
Therefore we can write the relationship as,
y ∝ x
y = k x
The line goes through the point (-2,3), thus, substitute the points in the equation formed above,
3 = k × (-2)
k = -3/2
Now, substitute the value of k in the equation,
y = -(3/2)x
Hence, the correct option is B.
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What are the solutions to the equations y= 4x^2+5x-6
Answer:
D. x = -2; x = 3/4
Step-by-step explanation:
Read the values of a, b, and c from the quadratic equation: a is the number in front of x^2, b is the number in front of x, c is the number at the end. In our case: a = 4,b = 5,c = −6 The formula for the roots is = [tex]\frac{-b +-\sqrt{b^{2}-4ac } }{2a\\}[/tex]if the degree mesures of the angles in a triangle are in the ratio 2:3:4, what is the degree measure of the largest angle
The largest angle of the triangle is equal to 80 degrees.
Concept: Angle sum property of a triangle i.e., the sum of all angles of a triangle is equal to 180 degree
Given : Degree measures of the angles in a triangle are in the ratio 2:3:4
Let one part of each angle of the triangle be x, so the different angles of triangle are 2x,3x,4x (taking the ratios given in the question and multiplying by each of them by x)
2x +3x +4x = 180x
180x = 20
The angles of a triangle are 40,60,80
The largest angle of the triangle is equal to 80 degrees.
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When Evil Kenevil was a kid, he decided to attempt to jump a distance of 30 yards using ramps that extended 9 yards high for take off and landing with his motorcycle.
As the figure below illustrates, at zero yards from the take off ramp, he was 9 yards high. At 8 yards from the ramp, he was 17 yards high, and at 18 yards from the ramp, he was 18 yards high.
Since there are no rockets or wings affecting Evil’s flight, he should closely follow a parabolic path that can be modeled by a quadratic equation:
y=ax^2+bx+c, where y is the height of Evil’s bike, and x is the horizontal distance he has traveled.
1.) Using the three data points (x, y) that we know Evil passed through and the general quadratic equation, create three corresponding equations:
Equation 1: (5 pts.)
Equation 2: (5 pts.)
Equation 3: (5 pts.)
2.) Solve your system of equations from above for a, b, and c.
a = (10 pts.)
b = (10 pts.)
c = (10 pts.)
3.) Using your values of a, b, and c, what is the quadratic equation that models Evil’s jump?
Quadratic Equation: (10 pts.)
4.) What is the maximum height for Evil during this jump? (15 pts.)
5.) What is Evil’s height when he gets to the landing ramp? Is this a successful stunt? (15 pts.)
6.) Evil was at a height of 17 yards when he was 8 yards out. Where else was he at a height of 17 yards?
which relation describes the graph?
Answer:
B.
Step-by-step explanation:
What factors do the numbers 16 and 36 have in common?
A. 1, 2, 4, 8
B. 1, 2, 4, 6
C. 1,2,4
D. 1, 2, 8, 16
Answer: C. 1, 2, 4
Step-by-step explanation:
A factor is an integer that is a divisor of a number. In other words, the number can be divided by this integer and result in another integer.
To answer this question, we can list the factors of both numbers. I have underlined and bolded integers that appear in both lists, giving us our answer.
Factors of 16: 1, 2, 4, 8 and 16
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
C. 1, 2, 4
can i charge my hp laptop more than 1000 times
A farmer has 324 feet of fencing to make three identical adjacent rectangular pens, as shown in the picture. What dimensions of each pen will maximize the total enclosed area?
The dimensions of each pen that will maximize the total enclosed area would be as; Length 81 feet; Width 81 feet.
What is a system of equations?A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Let the Dimension of each pen
Length = x
Width = y
Area = xy
Perimeter equation
2(x + y) = 324
x + y = 162
Substituting the perimeter equation
Area = x(162 - x)
Area = -x^2 + 162x
If the zeros of the quadratic are 0 and 162, then the median will be at where the maximum area occurs.
162/ 2
= 81
Hence, The dimensions of each pen that will maximize the total enclosed area would be as; Length 81 feet; Width 81 feet.
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Based only on the information given in the diagram, it is guaranteed that
ARST AUVW.
R
72°
S
TV
18⁰
A. True
B. False
Answer:
TrueExplanation -
In triangle SRT
angle R = 72°
angle T = 90°
angle S = 18° ( by angle sum property of a triangle)
in triangle VWU
angle W = 90°
angle V = 18°
angle W = angle T
side RS = side uv ( if two corresponding angles of two triangles are equal then their sides are also equal)
angle R = angle V
by angle side angle criteria both the triangles are congruent.
3.8% of a population are infected with a certain disease. There is a test for the disease, however the test is not completely accurate. 93.9% of those who have the disease test positive. However 4.1% of those who do not have the disease also test positive (false positives). A person is randomly selected and tested for the disease. What is the probability that the person has the disease given that the test result is positive?
The conditional probability that the person has the disease given that the test result is positive is of 0.4750 = 47.50%.
What is Conditional Probability?
Conditional probability is the probability of one event happening, considering a previous event. The formula is:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which:
P(B|A) is the probability of event B happening, given that A happened.[tex]P(A \cap B)[/tex] is the probability of both A and B happening.P(A) is the probability of A happening.In this problem, the events are:
Event A: Positive test.Event B: Has the disease.The percentages associated with a positive test is:
93.9% of 3.8%(has the disease).4.1% of 100 - 3.8 = 96.2%(does not have the disease).Hence:
[tex]P(A) = 0.939(0.038) + 0.041(0.962) = 0.075124[/tex]
The probability of both a positive test and having the disease is given by:
[tex]P(A \cap B) = 0.939(0.038) = 0.035682[/tex]
Hence the conditional probability is given by:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.035682}{0.075124} = 0.4750[/tex]
More can be learned about conditional probability at https://brainly.com/question/14398287
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Which relation is a function??????
Answer:
A
Step-by-step explanation:
there cannot be 2 different points on the same x coordinate
