Ok, so, this implies h=0 when the pebble hits the ground.
So, - 16t^2 + 24t + 1300 = 0
If we find t, we obtain two solutions, one negative and one positive, so the positive is correct.
Then, t = 9.7950 s
Therefore, it would take about 9.7950 seconds for the pebble to hit the ground.
5. A kite at point C is sighted by two observers at points A and B at angles of elevation 20° and 70°. The observers are 100 ft apart and are in the same vertical plane as the kite. How high is the kite?
Answer:
Step-by-step explanation:
x 3.2 is the answer maybe
farmer scott is one of the best farmers in town. during the middle of the corn-growing season, farmer scott had to travel out of town for two weeks, and he left his acres of corn plants alone with no chemicals or other protection. in terms of succession, which of these best describes what farmer scott returned to after the two weeks?
After Farmer Scott travelled for two weeks and left his acres of corn plants alone with no chemicals or other protection weeds began to grow and develop after farmer Scott returned to after the two weeks.
The farmer Scott will almost certainly come across the little weeds that had begun to sprout and flourish in his corn field while he was away this was as a result of not attending to the corn fields. The field was not safeguarded by pesticides or insecticides. The weeds would not have been eradicated for two weeks, resulting in greater growth. They will consume all of the nutrients, causing the corn plants to perish.
Learn more about weeds here:https://brainly.com/question/22533333
#SPJ4
throw two six-sided dice, one is fair and the other is unfair with probabilities given as Face : 1 2 3 4 5 6 Pobability : 1/9 1/9 1/9 1/9 3/9 2/9 The unfair die look the same as the fair die. Let X and Y be the number observed from the fair unfair dice, respectively. A)Find the joint distribution of X and Y
The joint distribution of X and Y probability is 1/6.
What is probability?
Probability is that the branch of arithmetic regarding numerical descriptions of however possible an occasion is to occur, or however possible it's that a proposition is true.
Main body:
Two dice are thrown S = { (i,j) / i, j =1:6}
a) X : Number observed from the fair die.
Y : Number observed from the unfair die.
P(X=1, Y=1) = 1/6 * 1/9 =1/54
Similarly we can obtained remaining probabilities.
P(X=2, Y=2 ) = 1/6 * 1/9 =1/54
P(X=3, Y=3 ) = 1/6 * 1/9 =1/54
P(X=4, Y=4 ) = 1/6 * 1/9 =1/54
P(X=5, Y=5 ) = 1/6 * 3/9 =3/54 = 1/18
P(X=6, Y=6 ) = 1/6 * 2/9 =2/54 = 1/27
the joint distribution of X and Y is =
⇒P(X=1, Y=1) = 1/6 * 1/9 =1/54 + P(X=2, Y=2 )+ P(X=3, Y=3 ) + P(X=4, Y=4)+
P(X=5, Y=5 ) +P(X=6, Y=6 )
⇒1/54 +1/54+1/54+1/54 +3/54+2/54
⇒ 9/54
⇒1/6
Hence the joint distribution of X and Y probability is 1/6.
To know more about probability , visit:
https://brainly.com/question/24756209
#SPJ4
What is enough information to prove u || v ?
Answer:not a lot
Step-by-step explanation:
An online music streaming service has a yearly membership fee of $50.88. There is an initial registration fee of $3.00 and the rest is paid monthly. To figure out how much each new member pays each month, solve for m in the equation shown, where m represents the monthly fee.
Answer:
m = 3.99
Step-by-step explanation:
50.88 = 3 + 12 * m
50.88 - 3 = 12 * m
m = 47.88 / 12 = 3.99
consider a function z(x, y) and its partial derivative (∂z/∂y)x. if this partial derivative is equal to zero for all values of x, what does it indicate?
If the partial derivative is equal to zero for all values of x then it indicates that the function is constant.
What is a partial derivative?
In differential calculus, partial derivative is defined as the rate of change of multivariable functions concerning change in just one of its variables.
Consider the restriction of f to a line y=c,
then
[tex] \frac{∂f}{∂x}(x \: c) = fx(f \: c) = 0[/tex]
Pick 2 points a and b, then by mean value theorem there is x0, such that
[tex]fx(x \: c) = \frac{f(b \: c) - f(a \: c)}{b - a} = 0[/tex]
[tex]⟹f(b \: c) - f( \: a \: c) = 0⟹f(b \: c) = f(a \: c)⟹f(x \: c) = const.[/tex]
We can show the same way that f(c,y)=const.
Combining f(x,c)=const and f(c,y)=const to get f(x, y)=const.
Hence, If the partial derivative is equal to zero for all values of x then it indicates that the function is constant.
Learn more about partial derivatives at
https://brainly.com/question/28750217
#SPJ4
Aiko is enclosing a new rectangular flower garden with a rabbit garden fence. She has 40 feet of fencing.
A quadratic function in standard form that represents each area as a function of the width is; A = -x² + 20
How to solve quadratic word problems?We are told that she is enclosing a new garden and has 40 ft of fencing.
Now, let the two sides be labelled x and y.
We know that area of a rectangle is;
A = length * width
Thus;
A = xy
Now, since she has 40 ft of fencing, then it means that;
y = 0.5(40) - x
y = 20 - x
Thus, the area expressed in quadratic function formula is;
A = x(20 - x)
A = 20x - x²
A = -x² + 20
Read more about Quadratic equations at; https://brainly.com/question/25841119
#SPJ1
Complete question is;
Write a quadratic function in standard form that represents each area as a function of the width.
Remember to defi ne your variables
A triangle has two sides of lengths 6 and 9. What value could the length of the third side be? check all that apply.
The length of the 3rd side of the given triangle with 6 units and 9 units being the length of the 1st and 2nd side can be:
(B) 4 units
(C) 7 units
(F) 10 units
(E) 12 units
What is a triangle?A triangle is a polygon with three vertices and three sides.
The angles of the triangle are formed by the connection of the three sides end to end at a point.
The triangle's three angles add up to 180 degrees in total.
So, knowing that the third side of a triangle must be longer than the sum of the first two sides and shorter than the difference between the first two sides allows us to obtain:
x > (9-6) so x > 3 and x < (9+6) so x < 15
Based on these findings, the third side length can be chosen from B. 4, C. 7, F. 10, and E. 12.
Therefore, the length of the 3rd side of the given triangle with 6 units and 9 units being the length of the 1st and 2nd side can be:
(B) 4 units
(C) 7 units
(F) 10 units
(E) 12 units
Know more about triangles here:
https://brainly.com/question/28889256
#SPJ4
Complete question:
A triangle has two sides of lengths 6 and 9. What value could the length of the third side be? Check all that apply
A.15
B.4
C.7
D.2
E.12
F.10
Sketch the vector field F. (Select Update Graph to see your response plotted on the screen. Select the Submit button to grade your response.) F(x, y, z) = j - i At (-2, -2, -2) the vector is At (-2, -2, 2) the vector is At (-2, 2, -2) the vector is At (-2, 2, 2) the vector is At (2, -2, -2) the vector is At (2, -2, 2) the vector is At (2, 2, -2) the vector is At (2, 2, 2) the vector is
The sketching of the vector field is attached herewith.
Since we know the formula for the vector field is :
F(x, y, z) = -yi+ xj = xj -yi, where x and y are the magnitude and i and j are the unit vectors for the x and y - axis .Since we the points we are given with are:(-2, -2, -2) ,(-2, -2, 2) ,(-2, 2, -2),(-2, 2, 2),(2, -2, -2) ,(2, -2, 2),(2, 2, -2) , (2, 2, 2). So the filed vectors for individual points will be just substituting the magnitude of the individual axis :
F(-2, -2, -2) = -2j +2i
F(-2, -2, 2) = -2j +2i
F(-2, 2, -2) = -2j -2i
F(-2, 2, 2) = 2j +2i
F(2, -2, -2) = -2j-2i
F(2, -2, 2) = -2j -2i
F(2, 2, -2) = 2j -2i
F(2, 2, 2) = 2j -2i
To know more about field vectors refer to the link brainly.com/question/24332269
#SPJ4
37. a confidence interval for the difference of two population means a) must pool the sample variances. b) may or may not pool the sample variances. c) cannot be used to test for equal population means. d) must have equal sample sizes.
The confidence interval of two populations means a) it must pool the sample variances
A confidence interval provides a range of possible values for the difference between two population means. For example, a 95% confidence level indicates that given 100 random samples from the population, you can expect about 95 samples to yield intervals that include the population difference.
If the confidence interval for the between-groups difference contains zero, it means that if you run the experiment again, it is likely that you will not find a difference between the groups. Two populations from which two independent samples are selected are known to have the same variance.
Learn more about the confidence interval in
https://brainly.com/question/24131141
#SPJ4
n linear programming, what is another name for sensitivity analysis? part 2 a. regression analysis b. postoptimality analysis c. parametric analysis d. robustness analysis
Postoptimality analysis is another name for sensitivity analysis
What is sensitivity analysis?
According to a certain set of supposition, sensitivity analysis evaluates how various values of an independent variable affect a specific dependent variable. In other words, sensitivity studies look at how different types of uncertainty in a mathematical model affect the overall level of uncertainty in the model. This method is used within boundaries that are preset and depend on one or more input variables.
Both the corporate sector and the study of economics employ sensitivity analysis. It is often referred to as a what-if study and is frequently utilized by economists and financial experts.
Therefore, Postoptimality analysis is another name for sensitivity
analysis and thus option B is the correct answer
Learn more about Sensitivity analysis from the link below
https://brainly.com/question/13266122
#SPJ4
An electrician charges a rate of $60 per hour plus a per job fee of $25. If
the electrician works on the weekend, he charges an additional 50% of
his hourly rate. Write an expression that represents the total cost for a
weekend job in 2 different ways.
The expression that represents the total cost on weekend job is 25x + 90y.
What is an Algebraic expression?An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.
The variable part of an algebraic expression can never be added or subtracted from the constant part.
Given that,
The hourly charge of the electrician is $60.
And, the job fee is $25.
The additional percent charged on weekend is 50%.
Suppose the number of jobs on weekend is x and the total hour worked is y.
Then, as per the given case, the following expression can be written for the weekend cost as,
25x + 60y + (50% of 60y)
= 25x + 60y + 50/100 × 60y
= 25x + 90y
Hence, the expression for the total cost for a weekend job is given as 25x + 90y.
To know more about algebraic expression click on,
brainly.com/question/953809
#SPJ1
the academic planner of a university has stated that at least 35% of the entire student body attends summer school. the correct set of hypotheses for you to test this statement is
At least 35% of all registered students, according to a university's academic planner, take summer courses. H0:p.35 Ha:p.35 is the appropriate set of hypotheses to test his theory with.
What are the hypotheses?A hypothesis is a put-forth explanation for a phenomenon (plural: hypotheses).
A hypothesis must be testable according to the scientific method for it to be considered a scientific hypothesis.
Scientific hypotheses are typically based on prior observations that cannot be adequately explained by the current body of knowledge.
For example, a university's academic planner estimates that at least 35% of all enrolled students attend summer classes. The proper set of hypotheses to use in order to test his theory is H0:p.35 Ha:p.35.
Despite the frequent confusion between the terms "hypothesis" and "theory," a scientific hypothesis differs from a scientific theory.
A working hypothesis is an accepted theory that has been tentatively supported and is put up for further investigation.
Therefore, at least 35% of all registered students, according to a university's academic planner, take summer courses. H0:p.35 Ha:p.35 is the appropriate set of hypotheses to test his theory with.
Know more about hypotheses here:
https://brainly.com/question/11555274
#SPJ4
I REALLY NEED HELP!!
Find a point on the line and the line's slope.
y = 3 + 3 ( x + 4 )
point on the line: (____,____)
slope: _____
The point on the line is (-4, 3) and the slope of the line is m=3
What is meant by slope?Divide the "vertical change" by the "horizontal change" between (any) two distinct points on the line to find the slope.
The slope's absolute value is used to calculate the steepness, incline, or grade of a line. A line's direction can be increasing, decreasing, horizontal, or vertical.
If a line runs up from left to right, it is growing. The slope is positive, implying that m>0.
If a line falls from left to right, it is diminishing. m<0 is the slope.
A horizontal line has a slope of zero. This is a function that never changes.
Given,
y=3+3(x+4)
y-3=3(x-(-4))
Here, the point on the line is (-4, 3)
And the slope of the line is m=3
Hence, the point on the line is (-4, 3) and the slope of the line is m=3
To know more about slope, visit:
https://brainly.com/question/3605446
#SPJ1
An adult ticket for a magic show costs $18. A children's ticket for the magic show costs $12.
The number of adult tickets sold is 3 times the number of children's tickets sold. A total of $1980 is taken in for ticket sales.
How many of each type of ticket is sold?
answers
50 adult tickets and 150 children's tickets
30 adult tickets and 90 children's tickets
150 adult tickets and 50 children's tickets
90 adult tickets and 30 children's tickets
The number of each type of ticket is sold is D. 90 adult tickets and 30 children's tickets
What will the number of tickets be?From the information given, an adult ticket for a magic show costs $18. A children's ticket for the magic show costs $12.
The number of adult tickets sold is 3 times the number of children's tickets sold. A total of $1980 is taken in for ticket sales.
Let the number of children tickets = x
Number of adults ticket = 3x
Therefore, this will be illustrated as:
18(3x) + 12(x) = 1980
54x + 12x = 1980
66x = 1980
Divide
x = 1980 / 66
x = 30.
Children ticket = 30
Adult tickets = 30 × 3 = 90
Learn more about equations on:
brainly.com/question/2972832
#SPJ1
whats -3x + 4x please answer.
Answer: 1x
Step-by-step explanation:-3+4=1 and then add a x
If me and my brother pay for grocerie and the total wa 443 and I pay 243 and he pay 200 but we get paid back 75 each how much hould I get paid
The total money I have to pay will be 168.
What is the arithmetic operation?
The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or more quantities. Included in them is the study of numbers, especially the order of operations, which is important for all other areas of mathematics, including algebra, data management, and geometry. The rules of arithmetic operations are required in order to answer the problem.
If I and my brother pay for groceries and the total was 443.
If i pay 243 and get paid back 75
So the total I paid will be (243 - 75) = 168
Hence, the total money I have to pay will be 168.
Learn more about arithmetic, by the following link.
https://brainly.com/question/13181427
#SPJ4
a ladder ft long leans against a vertical wall. if the lower end is being moved away from the wall at the rate of ft/sec, how fast is the height of the top changing (this will be a negative rate) when the lower end is feet from the wall?
The height of the top change when the lower end is feet from the wall by -4.5 ft/sec.
Given,
Assume that the horizontal floor is x and the vertical wall is y in distance (6 ft).
This creates a triangle, with the ladder serving as the 10 foot hypotenuse.
dy/dt = 6 feet per second.
Pythagoras' law states that there is a link between x and y.
(x²) + (y²) = (hypothenus²) = 10².
When both sides of the equation are distinct,
0 = 2x(dx/dt) + 2y(dy/dt)
(x/y) × (dx/dt) = dy/dt
y = √(10²) - (6²) = 8ft
Consequently, dy/dt = (6/8) × (6/1)= -4.5 ft/sec.
The rate is negative.
That is,
When the lower end is feet from the wall, the height of the top changes by -4.5 feet per second.
Learn more about height of the top here;
https://brainly.com/question/17151360
#SPJ4
Help quick! It's FLVS!
Compare the square root of 26 and twenty eight sixths using >, <, or =.
twenty eight sixths is less than the square root of 26
the square root of 26 is less than twenty eight sixths
twenty eight sixths is greater than the square root of 26
the square root of 26 is equal to twenty eight sixths
Twenty eight sixths is less than the square root of 26 which is [tex]\sqrt[6]{28}[/tex] < [tex]\sqrt{26}[/tex]
What is the square root of a number?Square root of a number is a value, which on multiplication by itself, gives the original number. The square root is an inverse method of squaring a number. Hence, squares and square roots are related concepts.
checking for square root of:
[tex]\sqrt[6]{28}[/tex] = 1.74
[tex]\sqrt{26}[/tex] = 5.09
which means 1.74 < 5.09
Therefore [tex]\sqrt[6]{28}[/tex] < [tex]\sqrt{26}[/tex]
In conclusion twenty eight sixths is less than the square root of 26 ( [tex]\sqrt[6]{28}[/tex] < [tex]\sqrt{26}[/tex])
Learn more about Square root of numbers: https://brainly.com/question/28896349
#SPJ1
a flying squirrel jumped from a tree 11 feet in the air at an initial velocity of 9 feet per second
The maximum height reached is 21.125ft
The squirrel was at its highest point when, v=0, which occurred 2.25 seconds after it jumped.
Squirrel reaches the ground in 5.5 seconds.
What is the relation between height and velocity?
We can find velocity if equation of height is given by differentiating the equation with respect to time.
According to the given question:
The squirrel can only have reached its maximum height when its velocity equals zero.
If h=-2t^2+9t-11
Then dh/dT=v=-4t+9
A) Therefore ,at the maximum height, the velocity ,v=0.
That is, 4t=9 , consequently, t=2.25s
Therefore, when t=2.25s
h=-2(2.25)^2 + 9(2.25)-11
The maximum height reached is then h=21.125ft
B) As explained above, the squirrel was at its highest point when, v=0, which occurred 2.25seconds after it jumped.
C) The squirrel reaches the ground when h=0...
0=-2t^2+9t+11
-2t^2-2t+11t+11=0
-2t(t+1)+11(t+1)=0
(-2t+11)(t+1)=0, since t>0 for this problem...
-2t+11=0
-2t=-11
t=5.5 seconds.
Therefore, squirrel reaches the ground in 5.5 seconds.
To know more about velocity and height visit
https://brainly.com/question/19557111
#SPJ1
Can someone realy nice help me? I am going to give ya 20 pionts and BRAINLEST!! TYSM
the liner Regresstion is y=0.176x+0.500 (I got this one myself LOL)
the table is
|Y | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
|---------------------------------------------------------------------------------------------------------|
|X | 0.70 | 1.04 | 1.15 | 1.38 | 1.86 | 1.70 | 2.55 | 1.29 | 2.22 | 2.56 |
so there are 2 parts (it is not a lot but worth your time) LOL.
part 1# List the domain of the linear regression equation in interval notation. Round to the nearest thousandth if needed.
part 2# List the range of the linear regression equation in interval notation. Round to the nearest thousandth if needed
agian thank you
here are some screen shots hope it helps
A flower hop ha 18 red roe, 27 pink tulip and 36 white gardenia. The florit want to make identical bouquet with no flower left over. Each bouquet mut contain roe, tulip and white gardenia. What i the larget number of bouquet the florit can make?
The largest number of bouquet are 9
What is Highest Common Factor?
The greatest common factor is the biggest whole number shared by the supplied numbers. For example, the common factors of 10 and 20 are 1, 2, 5, and 10, with 10 being the greatest; so, the highest common factor of 10 and 20 is 10.
Solution:
Total Red Roses = 18
Total Tulip = 27
Toal White Gardenia = 36
To find the largest number of bouquet we need to use Highest Common Factor
HCF of (18, 27, 36) = 9
The largest number of bouquet are 9
To learn more about Highest Common Factor from the given link
https://brainly.com/question/219464
#SPJ4
An officer printer prints 25 photos in 12.5 minutes. A home printer prints 15 photos in 6 minutes. Which printer is faster, How many more photos can you print in 12 minutes using the faster printer? You can print ____
more photos in 12 minutes using the faster printer.
Answer: The at home printer prints faster, and you can print 6 more photos with it than the office printer.
Step-by-step explanation:
25 ÷ 12.5 = 2
15 ÷ 6 = 2.5
2 x 12 = 24
2.5 x 12 = 30
Describe the end behavior of the function.
The end behavior of the function is described by the following option:
f(x) -> 0 when x -> -∞ and f(x) -> -∞ when x -> ∞.
How to obtain the end behavior of a function?The end behavior of a function is given by the limits of the function as x goes to infinity.
On the graph, these limits are found looking at the behavior at the left end and at the right end of the graph, as follows:
Left end: x -> -∞.Right end: x -> ∞.From the graph, these limits are given as follows:
Left end: x -> -∞ -> 0, as the function tends to the origin.Right end: x -> ∞ -> negative infinity, as the function moves down.Hence the correct statement is given by the third option, as the other options give the wrong limits.
More can be learned about the end behavior of a function at brainly.com/question/28884735
#SPJ1
Which is the solution for the system of
linear equations graphed below?
A. (-4,3)
B. (0, 1)
C. (0, 3)
D. (-3, 4)
Answer:
D (-3,4)
Step-by-step explanation:
This is the point that the two line intersect. From (0.0) go three units left and 4 units up. That is where the lines cross.
Apples sell for $2
per pound and
oranges sell for $3
per pound.
Suppose Ben
bought 5 pounds of
fruit at a cost of
$12. How many
pounds of each
kind of fruit did
Ben buy?
Answer:
Step-by-step explanation:
apples=$2 per pound
oranges=$3 per pound
If Ben bought x pounds of oranges and five pounds of fruit in total, then he bought 5-x pounds of apples.
oranges price: 3x
apples price: 2(5-x)
Final Equation: 3x+2(5-x)=12
3x+10-2x=12
x+10=12
x=2 -> amount of oranges
input in apples equation
apples= (5-x)->(5-2)=3
Final answer: 2 pounds of oranges, 3 pounds of apples
can someone help me really quick
Answer:
Step-by-step explanation:
12.50
Answer:
B
Step-by-step explanation:
constant of proportionality = 10/20 = 1/2
y/x = 1/2
y = 1/2x
y = 1/2 * 25
y = 25/2
y = 12.5
two ferries simultaneously depart from opposite banks of a river and cross perpendicular to the banks. their speeds are constant, but not equal. the ferries meet 220 yards from the riverbank, and continue along their routes. on their return trips, the ferries meet 100 yards from the other bank. what is the width of the river?
The width of the river is 1700m
What is the time, distance & speed relation?
Speed is calculated by dividing the distance traveled by the amount of time it took to get there. Divide the distance by the speed to find the passing time. To get the distance, multiply the speed by time.
Let 'x' be the distance from THE far bank where 700 is the distance to the NEAR bank
boat one has travelled 700 (rate = 700/unit time) boat two has travelled x rate = x / unit time
boat one then travels x + 400 more and boat two travels 700 + (700+x -400) more when they meet
The time is the same:
rate x time = distance
distance/rate = time
equate the distances divided by the respective rates
(700 + x + 400)/700 = ( x + 700 + (700+x-400) )/x
1100x + x^2 = 1400x + 700000
x^2 - 300x - 700000 = 0
quadratic formula yields x = 1000
One boat travels 700 the other 1000 when they first meet.....width of the river = 700+ 1000 = 1700 m
Hence, the width of the river is 1700m
To learn more about the time, distance & speed relation visit,
https://brainly.com/question/13771725
#SPJ4
help please! (i'll give brainliest! <3)
Suppose 30= a × 60.
What is 30/a?
Answer:
[tex]\huge\boxed{\sf 60}[/tex]
Step-by-step explanation:
Given equation:30 = a × 60
Divide both sides by 60
30/60 = a
0.5 = a
a = 0.5Now,
Value of 30/a:= 30/0.5
= 60[tex]\rule[225]{225}{2}[/tex]
endure all, a manufacturer of batteries claims that the lifetime of their batteries is normally distributed with a mean of 500 hours and a standard deviation of 40 hours. what is the probability that an endure all battery selected at random will last more than 610 hours? a) 0.0228 b) 0.9970 c) 0.0030 d) 0.9965 e) 0.0035 f) none of the above.
The probability that an endure all battery selected at random will last more than 610 hours is 0.3%
What is the Z score?
A Z-score is a metric that quantifies how closely a value relates to the mean of a set of values. Standard deviations from the mean are used to measure Z-score. If a Z-score is 0, it indicates that the data point's score is identical to the mean score.
Z score is used to determine by how many standard deviations the raw score is above or below the mean, The z score is given by:
[tex]z = \frac{x - \mu}{\sigma}[/tex]
where,
x = raw score
μ = mean
σ = standard deviation
Given that μ = 500, σ = 40, for x > 610:
z = (610 - 500) / 40
= 2.75
From the normal distribution table, P(z > 2.75) = 1 - P(z < 2.75) = 1 - 0.9970 = 0.0030 = 0.3%
Hence, the probability that an endure all battery selected at random will last more than 610 hours is 0.3%
To learn more about the Z score visit,
https://brainly.com/question/25638875
#SPJ4