The direction of the greatest increase in heat from the point (2, 5) is in the direction of the vector (-21, -20).
To find the direction of the greatest increase in heat from point (2, 5), we need to find the gradient vector of the temperature function T(x,y) at that point, and then determine the direction in which the gradient vector points.
The gradient vector of T(x,y) is given by:
∇T(x,y) = (∂T/∂x)i + (∂T/∂y)j
where i and j are the unit vectors in the x and y directions, respectively.
Taking the partial derivatives of T(x,y) with respect to x and y, we get:
∂T/∂x = (x² - y²)/(x² + y²)²
∂T/∂y = -2xy/(x² + y²)²
Substituting x = 2 and y = 5, we get:
∂T/∂x = (4 - 25)/(29)² = -21/1681
∂T/∂y = -20/1681
Therefore, the gradient vector of T(x,y) at the point (2, 5) is:
∇T(2,5) = (-21/1681)i - (20/1681)j
The direction of the greatest increase in heat from points (2, 5) is in the direction of the gradient vector. We can normalize the gradient vector to get the unit vector in this direction:
u = (∇T(2,5))/|∇T(2,5)|
where |∇T(2,5)| is the magnitude of the gradient vector, given by:
|∇T(2,5)| = √((-21/1681)² + (-20/1681)²) = sqrt(841)/1681 = 1/41
Thus, the unit vector in the direction of greatest increase in heat from the point (2, 5) is:
u = (-21/1681i - 20/1681j)/(1/41) = -21i - 20j
Therefore, the direction of the greatest increase in heat from points (2, 5) is in the direction of the vector (-21, -20).
Learn more about direction at
https://brainly.com/question/13899230
#SPJ4
a basket is filled with an unknown number of eggs. when eggs are removed from the basket 2,3,4,5,or6atatime,oneeggisleftoverattheend. butnoeggsareleftoverwhentheyare removed 7 at a time. what is the smallest number of eggs that could have been in the basket?
The smallest number of eggs that could have been in the basket = 301
Given that the basket is filled with an unknown number of eggs.
Let N be the smallest number of eggs in the basket.
When eggs are removed 2, 3, 4, 5, or 6 at a time, one egg is left over at the end which means (N-1) is divisible by 2, 3, 4, 5, or 6, i.e. (N-1) is the least common multiple of 2, 3, 4, 5, and 6.
Since LCM (2, 3, 4, 5, 6) = 60
So, (N-1) should be a multiple of 60, then only (N-1) will be divisible by 2, 3, 4, 5, and 6. Therefore N is of the form 60k+1 (where k is an integer).
Since no egg is left over when they are removed 7 at a time, N should be a multiple of 7. Smallest multiple of 7 that is of the form 60k+1 (where k is an integer) is 301.
Hence the smallest number of eggs that could have been in the basket = 301.
To learn more about LCM visit : https://brainly.com/question/16054958
#SPJ11
Find the width of a cuboid given that it has a length of 7 cm, height of 10 cm and volume of 490 cm3
The width of a cuboid is 7 cm
In geometry, a cuboid is a solid shape or a three-dimensional shape. A convex polyhedron that is bounded by six rectangular faces with eight vertices and twelve edges is called a cuboid. A cuboid is also called a rectangular prism. A cuboid with six square faces is called a cube. An example of a cuboid in real life is a rectangular box.
volume = l * b * h = 490
7 * b *10 = 490
b = 7 cm
In Maths, we can observe other shapes which are exactly the same as cuboid, they are rectangular cuboid, rectangular box, right rectangular prism, right cuboid, rectangular parallelepiped, and rectangular hexahedron
know more about cuboid click here;
https://brainly.com/question/29568631
#SPJ4
A marble is dropped into a beaker
containing 100 mL of water. As the
marble becomes submerged, 10 mL
of water flowed out of the beaker,
What is the volume of the marble?
Voume of marble is 10mL because when you submerged the marble in water equal volume of water flowed out.
Find the values of my and n
m = 60 and n = 24
. . . .
. . . .
. . . .
The town plaza in a certain town is a The town plaza in a certain town is a parallelogram. The town's planning committee has decided to build a fountain at the center of the plaza. This sketch shows the corner points when placed on a coordinate grid. A = (0, 4); B = (6, 1); C = (4, -3); D = (-2, 0) Which coordinates show where the fountain will be located?parallelogram. The town's planning committee has decided to build a fountain at the center of the plaza. This sketch shows the corner points when placed on a coordinate grid. A = (0, 4); B = (6, 1); C = (4, -3); D = (-2, 0) Which coordinates show where the fountain will be located?
The coordinates where the fountain will be located is (2, 1/2)
Calculating the coordinates where the fountain will be located?From the question, we have the following parameters that can be used in our computation:
The center town forms a parallelogram with the vertices
A = (0, 4); B = (6, 1); C = (4, -3); D = (-2, 0)
The corner points when placed on a coordinate grid can be calculated using
Mid-point = 1/2(x1 + y1, x2 + y2)
So, we have
Center = 1/2 * (0 + 4, 4 - 3) or
Center = 1/2 * (6 - 2, 1 + 0)
Evaluate
Center = (2, 1/2) or Center = (2, 1/2)
Hence, the coordinates where the fountain will be located is (2, 1/2)
Read more about midpoint at
https://brainly.com/question/28462165
#SPJ1
Misha’s hamster weighed 0.845 kilograms. About how much does it weigh, rounded to the nearest hundredth?
0.85 kilograms
0.8 kilograms
1 kilograms
0.84 kilograms
Answer: 0.85 kilograms
Step-by-step explanation:
A rental car company charges $20 per day to rent a car and $0.10 for every mile driven. Addison wants to rent a car, knowing that: . She plans to drive 100 miles. She has at most $80 to spend. Write and solve an inequality which can be used to determine x, the number of days Addison can afford to rent while staying within her budget.
Answer:
80\(\leq\)20x+0.1(100)
Step-by-step explanation:
x for the number of days you are trying to find.
$20 to rent the car per day.
$0.1 for every mile driven and she wants to drive 100 miles so $0.1(100).
she cannot spend over 80 so the sign should be equal to $80 or less than.
what is 500000 x 500000
Answer:
500000 x 500000 =250000000000
Step-by-step explanation:
Hope it help and have a great day
Answer: It's 250000000000
Hope this helps have a awesome night/day❤️✨Step-by-step explanation:
mrs lopez types at a constant rate the constant of proportionality for the relationship between the number of words she types w, and the number of minutes she types m,is 38 write an equation to show this relationship
The equation that shows the relationship is w = 38m.
Writing an equation to show this relationshipIf Mrs. Lopez types at a constant rate, then the number of words she types is directly proportional to the amount of time she types. We can express this relationship using the formula:
w = km
where w is the number of words typed, m is the number of minutes spent typing, and k is the constant of proportionality.
We are given that k = 38, so we can substitute this value into the formula to get:
w = 38m
Therefore, the equation that shows the relationship between the number of words Mrs. Lopez types and the number of minutes she types is w = 38m.
Read more about proportional relationship at
https://brainly.com/question/28651666
#SPJ1
What is the volume of a cylinder, in cubic centimeters, with a height of 2 centimeters
and a base diameter of 20 centimeters? Round to the nearest tenths place
Answer:
V ≈ 628.3 cm³Step-by-step explanation:
Volume of cylinder: V = π×r² × h
diameter = 20 cm ⇒ r = 10 cm
h = 2 cm
Volume:
V = π×(10)²×2 = 200π cm³ = 628.318.... cm³ ≈ 628.3 cm³
If the figure shown on the grid below is dilated by a scale factor of 4 with the center of dilation at (4, 6), what is the coordinate of point O after the dilation?
The coordinate of point O after the dilation (16, 24).
What is Scale factor?A scale factor is a numerical value that can be used to alter the size of any geometric figure or object in relation to its original size. It is used to find the missing length, area, or volume of an enlarged or reduced figure as well as to draw the enlarged or reduced shape of any given figure. It should be remembered that the scale factor only affects how big a figure is, not how it looks.
Given:
We have center of dilation at (4, 6)
Scale factor = 4
after applying the scale the coordinate will be
= 4(4, 6)
= (4 x 4, 6 x 4)
= (16, 24)
Learn more about scale factor here:
https://brainly.com/question/29144135
#SPJ1
Translate the equation
3 times the sum of 4 times a number and two is equal to 15 times the number
Answer:
x = 2
Step-by-step explanation:
3(4x + 2) = 15x
12x + 6 = 15x
6 = 15x - 12x
6 = 3x
x = 6/3
it is desired to estimate the mean tensile strength for roof hangers. it is known that the standard deviation of measurements of tensile strength is 0.25. (units are newton per square meter.) as it is very important for safety, the 99% confidence interval needs to have a margin smaller than 0.06. what is the minimum required sample size?
The minimum required sample size is 47 as it is very important for safety, the 99% confidence interval needs to have a margin smaller than 0.06.
To estimate the mean tensile strength for roof hangers with a 99% confidence interval margin of 0.06, we can use the formula:
Margin of error = z* (standard deviation / sqrt(sample size))
where z is the z-score for the desired confidence level, which for a 99% confidence interval is 2.576.
Plugging in the given values, we get:
0.06 = 2.576 * (0.25 / sqrt(sample size))
Solving for the sample size, we get:
sample size = (2.576 * 0.25 / 0.06)^2
sample size = 89.59
Rounding up to the nearest whole number, the minimum required sample size is 90.
Therefore, we need to take a sample of at least 90 roof hangers to estimate the mean tensile strength with a 99% confidence interval margin of 0.06.
To estimate the mean tensile strength for roof hangers with a 99% confidence interval and a margin of error smaller than 0.06, you'll need to determine the minimum required sample size.
For a 99% confidence level, the Z-score (critical value) is approximately 2.576.
The known standard deviation is 0.25. The desired margin of error is less than 0.06. Use the formula:
Margin of Error = Z-score * (Standard Deviation / sqrt(Sample Size))
Rearrange the formula to find the sample size:
Sample Size = (Z-score * Standard Deviation / Margin of Error)^2
Sample Size = (2.576 * 0.25 / 0.06)^2
Sample Size ≈ 46.24
Since you cannot have a fraction of a sample, round up to the nearest whole number. The minimum required sample size is 47.
Visit here to learn more about Standard Deviation:
brainly.in/question/55758939
#SPJ11
Determine whether the given number is an irrational number or a rational number and place it in its representing category\( \sqrt{120} \)\( \sqrt{36} \)\( \sqrt[7]{16} \)\( \sqrt{48} \)\( \sqrt{81} \)\(\pi\)
An irrational number could not be written as a fraction.
We need to clasify the following numbers in rational or irrational:
\(\begin{gathered} \sqrt[]{120}=\sqrt[]{4\cdot30}=2\cdot\sqrt[]{30}\Rightarrow Is\text{ irrational because }\sqrt[]{30}\text{ is irrational} \\ \sqrt[]{36}=6\Rightarrow Is\text{ rational} \\ \sqrt[7]{16}\Rightarrow\text{ Is irrational} \\ \sqrt[]{48}=\sqrt[]{16\cdot3}=4\cdot\sqrt[]{3}\Rightarrow Is\text{ irrational because }\sqrt[]{3}\text{ is irrational} \\ \sqrt[]{81}=9\Rightarrow Is\text{ rational} \\ \pi\text{ is irrational} \end{gathered}\)
WILL GIVE BRAINLIEST PLS HELP
Table 101 х 30 5080 y 10 18 25 9 from "Table 101" To evaluate the fit of a model, the absolute values of the deviations (differences between the actual data values and values predicted by the model) are added together. Order the models based on the these total deviations. Place the model with the smallest total absolute deviation on top. y = 0.4x - 2 = - y = 0.3x + 2 y = 0.3x + 1
Answer:
We can determine that Option A, y = 0.4x - 2 is the correct answer
Step-by-step explanation:
Step 1: Plug in 30 into the x-value to see if the y-value matches
Equation 1 --> y = 0.4(30) - 2 = 10
Equation 2 --> y = 0.3(30) + 2 = 11 <-- WRONG Y-VALUE
Equation 3 --> y = 0.3(30) + 1 = 10
Step 2: Plug in 50 into the x-value to see if the y-value matches
Equation 1 --> y = 0.4(50) - 2 = 18
Equation 3 --> y = 0.3(50) - 2 = 13 <-- WRONG Y-VALUE
Answer: We can determine that Option A, y = 0.4x - 2 is the correct answer
PLZS ANSWER WILL GIVE BRAINEST
Answer:
x=50
Step-by-step explanation:
67=x+17
67-17=50
x=50
whats the answer to (5² -4) ∙ 2 – 18
Answer:
Solving the equation \((5^2 -4) \cdot 2 -18\) we get 24
Step-by-step explanation:
We need to solve the equation \((5^2 -4) \cdot 2 -18\)
We will solve using DMAS rule i.e first bracket will be solved, then multiplication and at the end subtraction will be done.
First we will solve the bracket
\((5^2 -4) \cdot 2 -18\\=(25-4) \cdot 2-18\\=21 \cdot 2-18\)
Now multiply 21 by 2
\(=42-18\)
Now subtract
\(=24\)
So, solving the equation \((5^2 -4) \cdot 2 -18\) we get 24
Serenity filled up her car with gas before embarking on a road trip across the country. Let � G represent the number of gallons of gas remaining in her gas tank after driving for � t hours. A graph of � G is shown below. Write an equation for � G then state the � y-intercept of the graph and determine its interpretation in the context of the problem.
The equation is: G = -⁵/₄t + 15
The slope of the function represents that ⁵/₄ gallons of gas is consumed to drive the car for one hour.
How to find the linear equation of the graph?The formula for the equation of a line in slope intercept form is:
y = mx + c
where:
m is slope
c is y-intercept
From the graph, we see that:
y-intercept = 15 gallons
Now, the slope is gotten from the formula:
Slope = (y₂ - y₁)/(x₂ - x₁)
Slope = (10 - 5)/(4 - 8)
Slope = -⁵/₄
Thus, equation is:
G = -⁵/₄t + 15
The slope of the function represents that ⁵/₄ gallons of gas is consumed to drive the car for one hour.
Read more about Linear equation graph at: https://brainly.com/question/28732353
#SPJ1
In the year 200020002000, the average American consumed 8.38.38, point, 3 gallons of whole milk per year. This amount has been decreasing by 0.30.30, point, 3 gallons per year. Which inequality can be used to find the number of years, ttt, since 200020002000 when whole milk consumption was greater than 6.06.06, point, 0 gallons per person per year
Answer:
Let's first represent the number of years since 2000 with 't'. The initial milk consumption in the year 2000 was 8.38 gallons per person per year. After that, it decreases by 0.3 gallons per year. Therefore, the number of gallons of milk consumed 't' years after 2000 is given by 8.38 - 0.3t. Now we need to find the number of years since 2000 when milk consumption was greater than 6.06 gallons per person per year.
Let's represent this inequality with 't':8.38 - 0.3t > 6.06
We need to solve this inequality for 't':8.38 - 0.3t > 6.06-0.3t > 6.06 - 8.38-0.3t > -2.32t < (-2.32)/(-0.3)t < 7.73
Therefore, the inequality that can be used to find the number of years, t, since 2000 when whole milk consumption was greater than 6.06 gallons per person per year is t < 7.73.
Linear inequality: https://brainly.com/question/11897796
#SPJ11
paul orders a pizza. chef carl randomly chooses two different toppings to put on the pizza from the following: pepperoni, onion, sausage, mushrooms, and anchovies. if paul will not eat pizza with mushrooms, determine the probability that paul will not eat the pizza chef carl has made.
To determine the probability that Paul will not eat the pizza Chef Carl has made, we need to calculate the probability of Chef Carl selecting mushrooms as one of the toppings.
First, let's calculate the total number of possible combinations of two different toppings that Chef Carl can choose from the given options. Since order does not matter, we can use the combination formula:
C(n, r) = n! / (r! * (n-r)!),
where n is the total number of options and r is the number of choices. In this case, n = 5 (the number of toppings) and r = 2 (the number of choices).
C(5, 2) = 5! / (2! * (5-2)!) = 5! / (2! * 3!) = (5 * 4) / (2 * 1) = 10.
So there are a total of 10 possible combinations of two different toppings that Chef Carl can choose.
Next, we need to calculate the number of combinations that include mushrooms. Since Paul will not eat pizza with mushrooms, we want to exclude this option.
To choose one topping from the remaining four (excluding mushrooms), there are C(4, 1) = 4 possible choices.
Therefore, the probability that Chef Carl selects a combination with mushrooms is 4/10.
Finally, the probability that Paul will not eat the pizza Chef Carl has made is the complement of this probability, which is 1 - 4/10 = 6/10 = 3/5.
So, the probability that Paul will not eat the pizza is 3/5.
learn more about probability here
https://brainly.com/question/31828911
#SPJ11
i need the answer asap lol..
Answer:
144
Step-by-step explanation:
sense you have the line in the triangle you would add that to the 16 (length) and multiply that by the 6 (hight) and that would be the area (144)
3x/2x simplified into racio
Answer:
Simplify the expression.
3x2/2
hope this makes sense lol
Step-by-step explanation:
Answer:
1.5 : 1 (or) 3/2
Step-by-step explanation:
Given expression,
→ 3x/2x
Let's simplify the expression,
→ 3x/2x
→ (3 ÷ 2)(x ÷ x)
→ (1.5)(1)
→ 1.5
Now the required ratio will be,
→ 3 : 2
→ 1.5 : 1
Hence, required ratio is 1.5 : 1.
i need help with this
graph 7=-(x-4)
Answer:
Graph the line using the slope and y-intercept, or two points.
Slope: Undefined
y-intercept: No y-intercept
x y
-3 0
-3 1
Step-by-step explanation:
Below is a picture of the graph. PLEASE MARK BRAINlIST
5 cups equals how many pints and cups
Answer:
5 cups is 2.5 pts
Step-by-step explanation:
cups pts
5.00 2.5
5.01 2.505
5.02 2.51
5.03 2.515
Which is bigger 8 kg or 850 grams
Which is bigger 1 kg or 1000 grams
Which is bigger 3 liters or 3500 milliliters
Which is bigger 5 liters or 520 milliliters
PLZ ANSWER ALL 3 WILL GIVE 15 PIONTS
Find the solution of x,y,z:
3x+y+2z=5
2x+3y+3z=3
x-2y-z=2
Answer:
Infinitely many solutions
Step-by-step explanation:
Step by Step Solution
More Icon
System of Linear Equations entered :
[1] 3x + y + 2z = 5
[2] 2x + 3y + 3z = 3
[3] x - 2y - z = 2
Solve by Substitution :
// Solve equation [3] for the variable x
[3] x = 2y + z + 2
// Plug this in for variable x in equation [1]
[1] 3•(2y+z +2) + y + 2z = 5
[1] 7y + 5z = -1
// Plug this in for variable x in equation [2]
[2] 2•(2y+z +2) + 3y + 3z = 3
[2] 7y + 5z = -1
// Solve equation [2] for the variable z
[2] 5z = -7y - 1
[2] z = -7y/5 - 1/5
// Plug this in for variable z in equation [1]
[1] 7y + 5•(-7y/5-1/5) = -1
[1] 0 = 0 => Infinitely many
The volume of a cylindrical tin can with a top and a bottom is to be 16Ï€ cubic inches. If a minimum amount of tin is to be used to construct the can, what must be the height, in inches, of the can?
A 2 cube root of 2
B 2 sqrt of 2
C 2 cube root of 4
D 4
E 8
To minimize the amount of tin used, the height of the can must be 4 inches (option D).
The volume of a cylindrical tin can is given by the formula V = πr²h, where V is the volume, r is the radius, and h is the height. To minimize the amount of tin used, we need to minimize the surface area, which is given by the formula A = 2πrh + 2πr².
Given the volume is 16π cubic inches, we have:
16π = πr²h
Now, we can find the relationship between r and h:
h = 16/r²
Now, substitute this into the surface area formula:
A = 2πr(16/r²) + 2πr²
A = 32π/r + 2πr²
To minimize the surface area, we can take the derivative with respect to r and set it to 0:
dA/dr = -32π/r² + 4πr
0 = -32π/r² + 4πr
Solving for r:
r³ = 8
r = 2 (since r > 0)
Now, substituting r back into the relationship between r and h:
h = 16/(2²)
h = 16/4
h = 4
Therefore, the height of the can must be 4 inches (option D) to minimize the amount of tin used.
Learn more about minimizing surface area here: https://brainly.com/question/29897121
#SPJ11
Help ASAP
1. What is the volume of the cylinder shown above, rounded to the nearest hundredths?
2. What is the volume of the cylinder shown above if the radius is doubled, rounded to the nearest hundredths?
3. What is the volume of the cylinder shown above if the height is cut in half, rounded to the nearest hundredths?
Answer:
1) 169.7
2) 678.6
3) 84.9
Hope it helped!!!
EXERCISES
1
The number of goals for the 13 players on a soccer team are
4, 9, 0, 1,1, 2, 0, 0, 2, 8, 8, 3, 1. Find the median, lower quartile, and
upper quartile. Then make a box plot for the data.
Answer:
Step-by-step explanation:
4, 9, 0, 1,1, 2, 0, 0, 2, 8, 8, 3, 1.
Arrange in ascending order:
0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 8, 8, 9.
The median = middle value = 2.
Lower quartile = 0.5
Upper quartile = 6.
in the counting letters examples, the dictionary used to keep track of letter frequencies uses the count as the key. true false
Answer:
False
Step-by-step explanation:
The answer is False
The given statement is false, as the letters are used as keys in the dictionary.
The dictionary used in counting letters examples to keep track of letter frequencies uses the letters as the key and the count as the value. This means that for each letter encountered in a string, the value corresponding to the key (letter) in the dictionary is incremented by 1.
For example, if the string is "hello", the dictionary would initially be empty, and for each letter encountered in the string, the value for the corresponding key in the dictionary would be incremented by 1, resulting in a dictionary like {"h": 1, "e": 1, "l": 2, "o": 1}.
Therefore, the correct answer is false, as the letters are used as keys in the dictionary.
To learn more about dictionary here:
brainly.com/question/547574#
#SPJ11