Answer:
He jogged for 24 minutes and ran for 26 minutes
Step-by-step explanation:
Mathematically,
distance = speed * time
Let the amount of time jogged be x and the amount of time ran be y hours
50 minutes to hours = 50/60 = 5/6
so x + y = 5/6
Total distance jogged is 7x and total distance ran is 12y
7x + 12y = 8
So we have two equations;
x + y = 5/6
7x + 12y = 8
From i, x = 5/6-y
So;
7(5/6 - y) + 12y = 8
35/6 - 7y + 12y = 8
Multiply through by 6
35 + 30y = 48
30y = 13
y = 13/30
13/30 in minutes is 13/30 * 60 = 26 minutes
So the amount of time jogged is 50-26 = 24 minutes
a knowledge of statistics helps us make decisions based on ______ evidence.
Empirical, A knowledge of statistics is essential for anyone who wants to make informed decisions based on empirical evidence.
A knowledge of statistics helps us make decisions based on empirical evidence. Empirical evidence is data that has been collected through observation and experimentation, and statistics is a method for analyzing and interpreting this data. By using statistical tools and techniques, we can draw conclusions from empirical evidence and make informed decisions based on this information.
Statistics plays a crucial role in modern society, from medicine and public policy to business and finance. A knowledge of statistics enables individuals to understand and analyze data, to make informed decisions based on empirical evidence, and to communicate findings to others. Statistics helps us to quantify uncertainty and variability, to identify patterns and trends, and to make predictions based on past data. By using statistical methods, we can determine the probability of certain outcomes, assess risks and benefits, and evaluate the effectiveness of interventions or policies. For example, in medical research, statistics is used to test the effectiveness of new treatments or therapies, to determine the safety of drugs, and to identify risk factors for diseases. In public policy, statistics is used to analyze demographic trends, to assess the impact of social programs, and to inform decision-making around issues such as climate change or public health.
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Compute the 9th derivative of f(x) =arctan(x3/2)
At x=0
F(9)=
Hint: Use the MacLaurin series for f(x).
Substituting x = 0 in equation (9), we get: f(9) = 0.
Given that f(x) = arctan(x^(3/2)), we are supposed to compute the 9th derivative of f(x) at x = 0. We can use the MacLaurin series for f(x) to find the 9th derivative of f(x).The MacLaurin series of arctan(x) is given by:arctan(x) = x - (x³/3) + (x⁵/5) - (x⁷/7) + ...On differentiating once w.r.t. x, we get;f'(x) = [1/(1 + x²)] ...(1)Differentiating (1) w.r.t. x, we get;f''(x) = [-2x/(1 + x²)²] ...(2)Differentiating (2) w.r.t. x, we get;f'''(x) = [2(3x² - 1)/(1 + x²)³] ...(3)Similarly, on differentiating (3) w.r.t. x, we get;f''''(x) = [-24x(x² - 3)/(1 + x²)⁴] ...(4).
Differentiating (4) w.r.t. x, we get;f⁽⁵⁾(x) = [-24(5x⁴ - 10x² + 1)/(1 + x²)⁵] ...(5)On differentiating (5) w.r.t. x, we get;f⁽⁶⁾(x) = [24x(25x⁴ - 50x² + 15)/(1 + x²)⁶] ...(6)Differentiating (6) w.r.t. x, we get;f⁽⁷⁾(x) = [720x³(1 - 10x²)/(1 + x²)⁷] ...(7)On differentiating (7) w.r.t. x, we get;f⁽⁸⁾(x) = [720(105x⁴ - 420x² + 63)/(1 + x²)⁸] ...(8)Differentiating (8) w.r.t. x, we get;f⁽⁹⁾(x) = [-20160x³(35x⁴ - 126x² + 35)/(1 + x²)⁹] ...(9) Therefore, substituting x = 0 in equation (9), we get:f⁽⁹⁾(0) = 0 Hence, f(9) = 0. Note: To simplify the differentiation, the chain rule and quotient rule are used.
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Write
17
−
1
12
in surd form.
Answer:exact form: decimal form=
70082
Explanation=Write in radical form: exact form: decimal form: ...
Answer: exact form: decimal form: ...
Answer:
(Theres not much of a way for me to type the answer, so i added it into a png. hope it helps!)
Mount Everest is over 2.9 × 10 4 feet tall.
In standard form, that is _____.
Answer:
29,000
Step-by-step explanation:
im just smart
Answer:
it should be right 29,000
Step-by-step explanation:
Can you provide the solution for this exercise?
Let u(w) = −(b − w)c. What restrictions on w, b, and c are required to ensure that u(w) is strictly increasing and strictly concave? Show that under those restrictions, u(w) displays increasing absolute risk aversion.
under the restrictions that c is negative to ensure strict concavity, the utility function u(w) = -(b - w)c displays increasing absolute risk aversion.
To ensure that u(w) is strictly increasing, we need the derivative of u(w) with respect to w to be positive for all values of w. Taking the derivative, we have du(w)/dw = -c. For u(w) to be strictly increasing, -c must be positive, which implies c must be negative.
To ensure that u(w) is strictly concave, we need the second derivative of u(w) with respect to w to be negative for all values of w. Taking the second derivative, we have d²u(w)/dw² = 0. Since the second derivative is constant and negative, u(w) is strictly concave.
Now, let's examine the concept of increasing absolute risk aversion. If a utility function u(w) exhibits increasing absolute risk aversion, it means that as wealth (w) increases, the individual becomes more risk-averse.
In the given utility function u(w) = -(b - w)c, when c is negative (as required for strict concavity), the absolute risk aversion increases as wealth (w) increases. This is because the negative sign implies that the utility function is concave, indicating that the individual becomes more risk-averse as wealth increases.
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Which is a way to solve the equation 4x = 128 if you do not know a power of 4 that equals 128?.
When you do not recognize a power of 4 which it equals 128 then the proper technique to solve this equation 4x=128 is; Find intersections on the graph of y = 4ˣ and y = 128.
Define the term mathematical equation?The explanation of an equation in arithmetic is a mathematics statement that indicates the equality of two mathematical expressions.For instance, the equation 3x + 5 = 14 is composed of the two equations 3x + 5 and 14, whose are separated by the 'equal' sign.Consider the given equations;
y = 4ˣ and y = 128
Since, the power of 4 equals 128 is unknown.
Thus, draw the graph of equation y = 128. and y = 4ˣ .
Consider the intersected point from the graph.
Thus, when you do not recognize a power of 4 which it equals 128 then the proper technique to solve this equation 4x=128 is;
Find intersections on the graph of y = 4ˣ and y = 128.
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Q3) Jim is scuba diving. Jim started out 25 feet below the surface. He
descended 13 feet, and rose 7 feet. Then he rested. Find his position
relative to sea level?
Plz help me
Answer:
-31 feet
Step-by-step explanation:
so, -25 is the start point.
he goes anither -13 feet, so hes at -38.
he rises 7 feet, so hes at -31 feet.
Triangle abc was dilated with the origin as the center of dilation to create triangle d e f
Answer:
There is none.
Step-by-step explanation:
Sorry, but you need to give me the dialation for me to dialate it.
help please please please please
Answer:
y-6=-6(x-1)
Step-by-step explanation:
Hope this helps :D
have a nice thanksgiving
Answer:
\(y-6=-6(x-1)\)
Step-by-step explanation:
A point-slope equation requires two values in order to write it: one coordinate and the slope.
First, find the slope between the two given points. To find the slope, you would subtract the first Y from the second Y and the first X from the second X. Y goes on top of the fraction bar, making the equation look like this:
\(\frac{6-(-6)}{1-3}\)
Then, simplify the slope equation:
\(\frac{6-(-6)}{1-3} = \frac{6+6}{1-3} = \frac{12}{-2} = -6\)
The slope is -6.
Finally, choose one of the coordinates. For this, I'll pick (1, 6).
The point-slope equation is \(y-y_{1} =m(x-x_{1})\)
So, simply fill in the \(m\), \(y_{1}\) , and \(x_{1}\) spots with the value we have found.
\(m\) is the slope, so replace it with -6.
\(y_{1}\) = 6
\(x_{1}\) = 1
Final answer:
\(y-6=-6(x-1)\)
determine an expression in terms of m and l for the moment of inertia of the masses about axis a.
To determine an expression in terms of m and l for the moment of inertia of the masses about axis a, we need some additional information about the configuration of the masses and the axis.
The moment of inertia depends on the distribution of masses relative to the axis of rotation. It is a measure of an object's resistance to rotational motion. The formula for the moment of inertia varies depending on the specific shape and distribution of masses.
If you can provide more details about the arrangement of masses and the axis of rotation, I can help you derive the expression for the moment of inertia in terms of m and l.
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Given the formula for compound interest, calculate the amount of money Total in an account that pays 8% annual interest compounded quarterly and you invest $1200 for 5 years: ____A = P (1+r/n)mHow long will it take for the original amount of money to double to $2400?
A = P(1+r/n)(nt), where P is the original principal, r is the annual interest rate, n is the number of times the interest is compounded annually, and t is the number of years the money has been held, is the formula for compound interest.
To calculate the final amount of money in the account:
First, divide the 8% annual interest rate by 100 to get a decimal value: 0.08.
Find the number of times the interest is compounded annually. Since it is done quarterly, the answer is n = 4.
Put these values into the formula now, along with the $1200 principle sum and the number of years, 5, to complete it:
A = $1200(1+(0.08/4))^(4*5) = $2490.07
to determine how long it will take for the initial sum to double to $2400.
Divide the final sum by the starting sum: 2400/1200 = 2
Take the natural logarithm of 2: ln(2) = 0.693
Decimalize the result and divide it by the interest rate: 0.693 / 0.08 = 8.66 years
Therefore, the time it will take for the initial sum of money to double to $2400 is 8.66 years.
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NEED HELP
pls & thank you
We have proven that BC = DE using the Segment addition postulate
Segment addition postulateThe segment addition postulate states that given two points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC
The reasons for the proof are given below:
Statement Reason
BD = BC + CD Segment addition postulate
CE = CD + DE Segment addition postulate
BD = CE Given
BC + CD = CD + DE Substitution property
BC = DE Subtraction property
Hence, we have proven that BC = DE using the Segment addition postulate
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Can someone help me do this like the equation?!.
Answer:
36$
Step-by-step explanation:
all you need is in the photo
please help
Answer:
50
Step-by-step explanation:
NEED ANSWER FAST 13 POINTS!
Answer:option 2
Step-by-step explanation:
Answer:
im pretty sure its option number 2
The number of toy rockets made by an assembly for 8 hours forms an arithmetic sequence. If the line produced 40 rockets in hour one and 43 rockets in hour two, how many rockets will be produced in hour 7?
A. 47
B. 301
C. 51
D. 58
Answer:
58
Step-by-step explanation:
83.2x 0.1 i need help pls
Answer:
8.32
Step-by-step explanation:
All you have to do to solve this is move the decimal point 1 place to the left. This will make the answer 8.32.
If this has helped please mark as brainliest
Answer:
8.32
Step-by-step explanation:
When you multiply a number like 0.1 or 0.01, you simply move or add a decimal to the other number. Good luck and Have a great day =)
Abraham has visited 10 states already. He has a goal of visiting all 50 states. He plans to achieve this goal by visiting 5 new states per year (y) for the next several years. Which equation and solution shows the number of years that it will take for Abraham to meet his goal?
Answer:
10 + 5y = 50, y = 8 (years)
Step-by-step explanation:
5y - states. that Abraham still plans to visit.
10 + 5y = 50
5y = 50 - 10
5y = 40
y = 8
Answer: 10+5y=50; y=8 years
Step-by-step explanation:
Since Abraham has already visited 10 states, and he wants to visit 5 states per year, we get the equation 10+5y=50. The 10 is the number is states he has already visited. 5y represents the rate at which he visits the remaining states. 50 is the total amount of states.
To find the number of years, you get y alone.
10+5y=50
5y=40
y=8 years
A cubic function is stretched by a factor of 0.4, opening downward and
shifted 10 units down and 5 units left.
Answer:
the answer is in the link
Step-by-step explanation:
https
bxaha zshkkkvxxxkvvvvwuqgceuuuegieg DONT KNO
4. What fraction of 2hrs 15 minutes is 1/4 of an hour?
The fraction of 2 hrs 15 minutes to 1/4 of an hour is 1/9.
What is fraction?
An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.
Since,
1 hour = 60 minutes.
2 hours = 120 minutes.
2 hours 15 minutes = 120 + 15 = 135 minutes.
1/4 of an hour = 60/4 = 15 minutes.
So, the fraction is,
\(\frac{15}{135} = \frac{1}{9}\)
Therefore, the fraction of 2 hrs 15 minutes to 1/4 of an hour is 1/9.
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Help me with this please! :)
Answer:
28
36
40
44
just do the number +1 and ×4
Answer:
#1= 25
#2= 33
#3= 37
#4= 41
Step-by-step explanation:
Since the equation is y= 1+4x, whatever x is you would multiply by 4 and add one. For example, the first row has 6 as x. When you plug it in you have y=1+(4*6). since 4x6=24, you would add one to get 25. You can put the other numbers for x as long as you follow the same pattern.
I hope this helps :)
If 2.2 pounds of a certain grain cost $1.54, how much will 5.7 pounds of the grain cost? A. $4.38
B. $4.79
C. $3.62
D. $3.99
The cost of 5.7 pounds of the grain is given by the proportion A = $ 3.99
What is Proportion?The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.
The proportional equation is given as y ∝ x
And , y = kx where k is the proportionality constant
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Given data ,
Let the proportion be represented as A
Now , the value of A is
We can use a proportion to solve this problem. Let "A" be the cost of 5.7 pounds of the grain. Then we can write:
2.2 pounds / $ 1.54 = 5.7 pounds / A
To solve for "A", we can cross-multiply and simplify:
2.2 pounds x A = $ 1.54 x 5.7 pounds
A = ($ 1.54 x 5.7 pounds) / 2.2 pounds
A = $ 3.99
Hence , 5.7 pounds of the grain will cost $ 3.99
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This is for fun i'm not cheating
solve for D
Answer:
D = 1.93 ?
(ignore this..................................................................................)
The measure of angle 1 is 65 degrees. What are the measures of the other seven angles? (Enter the
number only)
Help I need big brains for it and I need it fast please help please
Answer:
See solution below
Step-by-step explanation:
According to the diagram shown
m<1 = m<5 = 5=65 degrees (corresponding angle)
m<5 = m<4 - 65 degrees (alternate interior angle)
m<9 = m<8 = 65degrees (corresponding angle)
m<5 = m<8 = 65dgrees (vertically opposite angles)
m<6+m<8 = 180
m<6 + 65 = 180
m<6 = 180 - 65
m<6 = 115degrees
m<2 = m<6 = 115degrees (corresponding angles)
m<6 = m<7 = 115degrees (vertically opposite angles)
m<3 = m<7 = 115degrees(corresponding angle)
)
The measures of the other seven angles are evaluated as:
\(m\angle 1 = 65^\circ = m\angle 5\\m\angle 2 =115^\circ = m\angle 6\\m\angle 3 =65^\circ = m\angle 7\\m\angle 4 = 115^\circ =m\angle 8\)
What are supplementary angles?Two angels whose sum is 180° are called supplementary angles.
When they are added together graphically, they form a straight line.
What are vertical angles?Each of the pairs of the opposite angles made by two intersecting lines are called vertical angles. They are of same measurement.
What are corresponding angles?In literal sense, corresponding means pair wise angles. Like the right corner angles of two triangles etc. But usually we take them as:
For two similar figures, the pair by pair similar angles of those two similar figures are called corresponding angles. They are of same measurement.
For this case, we have:
Angle 1,2,3 and 4 corresponding to 5,6,7 and 8 angle respectively. It is because the two lines A and B are parallel and the traversing line intersects both of them. When single line intersect two parallel lines, it makes same corresponding angles on both of the sides. That means
\(m\angle 1 = m\angle 5\\m\angle 2 = m\angle 6\\m\angle 3 = m\angle 7\\m\angle 4 = m\angle 8\)
where that small 'm' denotes that we're taking about their measurements.
Thus, we will only find 1,2,3,and angle 4's measurements and rest four would be found.
Since angle 1 and angle 4 are vertical angles, they are same measurement. Since angle 1 is of 65 degrees, thus:
\(m\angle 1 = 65^\circ = m\angle 4\)
Now, since angle angle 3 is supplementary to angle 1 and so as angle 2 to angle 4, thus:
\(m\angle 2 + m\angle 4 = 180^\circ\\m\angle 2 = 180-m\angle 4= 115^\circ\\\\m\angle 3 + m\angle 1 = 180^\circ\\m\angle 3 = 180-m\angle 1= 115^\circ\)
Thus, we get the measurement of all angles as:
\(m\angle 1 = 65^\circ = m\angle 5\\m\angle 2 =115^\circ = m\angle 6\\m\angle 3 =65^\circ = m\angle 7\\m\angle 4 = 115^\circ =m\angle 8\)
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Think About It!
What happens if you add 5 to each side of x – 5 = 15? Which Property of Equality are you using?
Answer:
Addition property
Adding 5 to the each side makes it
x -5 + 5 = 15 +5
x = 20
What is the area of the parallelogram?
Answer:
no se
tep-by-step explanation:
Can someone PLEASE help, it is URGENT. Make the answer clear. I'll give the brainliest or something, I just really need help. I think the brainliest will give 100 points.
The price of fuel may increase due to demand and decrease due to overproduction. Marco is studying the change in the price of two types of fuel, A and B, over time.
The price f(x), in dollars, of fuel A after x months is represented by the function below:
f(x) = 2.96(1.04)x
Part A: Is the price of fuel A increasing or decreasing and by what percentage per month? Justify your answer. (5 points)
Part B: The table below shows the price g(m), in dollars, of fuel B after m months:
Which type of fuel recorded a greater percentage change in price over the previous month? Justify your answer
Using the percentages we know that the price of the fule increased year was 5.6%.
What are percentages?A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics.
If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100.
The proportion, therefore, refers to a component per hundred. Per 100 is what the word percent means.
The letter "%" stands for it.
Calculating 50% of 40%, for instance, yields (50/100) x (40/100) = 0.50 x 0.40 = 0.20, which equals 20/100 or 20%. NOTE: Using the percent sign and a division by 100 at the same time is improper.
So, observing the chart we know that the price of fuel is increasing.
Now, calculate the percentage of increasing the price as follows:
1st year:
= 3.04/3.22 * 100
= 94.40
Percentage increase: 100 - 94.40 = 5.6%
2nd year:
= 3.22/3.41 * 100
= 94.42
Percentage increase = 100 - 94.42 = 5.6%
3rd year:
= 3.41/3.61 * 100
= 94.45
Percentage increase = 100 - 94.45 = 5.5%
Rounding the percentage increase: 5.6%
Therefore, using the percentages we know that the price of the fule increased year was 5.6%.
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Correct question:
Can someone PLEASE help, it is URGENT. Make the answer clear. I'll give the brainiest or something, I just really need help. I think the brainliest will give 100 points.
The price of fuel may increase due to demand and decrease due to overproduction. Marco is studying the change in the price of two types of fuel, A and B, over time.
The price f(x), in dollars, of fuel A after x months is represented by the function below:
f(x) = 2.96(1.04)x
Part A: Is the price of fuel A increasing or decreasing and by what percentage per month? Justify your answer. (5 points)
what is 24 • –31?? pls help
Answer: It's -744.
Multiply the first colum (-1,4) and then the second (2,-3) while also adding a zero. Remember it is both the 30 and the negative while multiplying.
Hope this helped:)
b) Find the area of the shaded region. The outer curve is given by r = 3 + 2 cos 0 and the inner is given by r = sin(20) with 0
The area of the shaded region is approximately 7.55 square units.
To find the area of the shaded region, we need to first sketch the curves and then identify the limits of integration. Here, the outer curve is given by r = 3 + 2 cos θ and the inner curve is given by r = sin(20).
We have to sketch the curves with the help of the polar graphs:Now, we have to identify the limits of integration:Since the region is shaded inside the outer curve and outside the inner curve, we can use the following limits of integration:0 ≤ θ ≤ π/5
We can now calculate the area of the shaded region as follows:
Area = (1/2) ∫[0 to π/5] [(3 + 2 cos θ)² - (sin 20)²] dθ
= (1/2) ∫[0 to π/5] [9 + 12 cos θ + 4 cos²θ - sin²20] dθ
= (1/2) ∫[0 to π/5] [9 + 12 cos θ + 2 + 2 cos 2θ - (1/2)] dθ
= (1/2) [9π/5 + 6 sin π/5 + 2 sin 2π/5 - π/2 + 1/2]
≈ 7.55 (rounded to two decimal places)
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College tuition: A simple random sample of 40 colleges and universities in the United States has a mean tuition of $19,100 with a standard deviation of $11,000. Construct a 90% confidence interval for the mean tuition for all colleges and universities in the United States. Round the answers to the nearest whole number. A 90% confidence interval for the mean tuition for all colleges and universities is
Answer:
The mean tuition for all colleges and universities in the United States falls within the range of approximately $15,322 to $22,878.
To construct a 90% confidence interval for the mean tuition for all colleges and universities in the United States, we can use the sample mean, sample standard deviation, and the t-distribution.
Given that we have a simple random sample of 40 colleges and universities with a sample mean of $19,100 and a standard deviation of $11,000, we can proceed with calculating the confidence interval.
First, we need to determine the critical value corresponding to a 90% confidence level. Since the sample size is less than 30, we use the t-distribution instead of the normal distribution. The degrees of freedom for a sample size of 40 is (n-1) = 39. Using a t-table or a statistical calculator, the critical value for a 90% confidence level with 39 degrees of freedom is approximately 1.684.
Next, we can calculate the margin of error (E) using the formula:
E = (critical value) * (sample standard deviation / √sample size)
E = 1.684 * ($11,000 / √40) ≈ $3,778
Finally, we can construct the confidence interval by adding and subtracting the margin of error from the sample mean:
Confidence Interval = (sample mean - margin of error, sample mean + margin of error)
Confidence Interval = ($19,100 - $3,778, $19,100 + $3,778)
Confidence Interval ≈ ($15,322, $22,878)
Therefore, we can say with 90% confidence that the mean tuition for all colleges and universities in the United States falls within the range of approximately $15,322 to $22,878.
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The mean tuition for all colleges and universities in the United States falls within the range of approximately $15,322 to $22,878.
To construct a 90% confidence interval for the mean tuition for all colleges and universities in the United States, we can use the sample mean, sample standard deviation, and the t-distribution.
Given that we have a simple random sample of 40 colleges and universities with a sample mean of $19,100 and a standard deviation of $11,000, we can proceed with calculating the confidence interval.
First, we need to determine the critical value corresponding to a 90% confidence level. Since the sample size is less than 30, we use the t-distribution instead of the normal distribution. The degrees of freedom for a sample size of 40 is (n-1) = 39. Using a t-table or a statistical calculator, the critical value for a 90% confidence level with 39 degrees of freedom is approximately 1.684.
Next, we can calculate the margin of error (E) using the formula:
E = (critical value) * (sample standard deviation / √sample size)
E = 1.684 * ($11,000 / √40) ≈ $3,778
Finally, we can construct the confidence interval by adding and subtracting the margin of error from the sample mean:
Confidence Interval = (sample mean - margin of error, sample mean + margin of error)
Confidence Interval = ($19,100 - $3,778, $19,100 + $3,778)
Confidence Interval ≈ ($15,322, $22,878)
Therefore, we can say with 90% confidence that the mean tuition for all colleges and universities in the United States falls within the range of approximately $15,322 to $22,878.
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