Answer:
t=7.7 s
Step-by-step explanation:
h=ut+1/2gt²
-76=113t+1/2(-32)t²
-76=113t-16t²
16t²-113t-76=0
[tex]t=\frac{113\pm\sqrt{(-113)^2-4 \times 16 \times(-76)} }{2 \times 16} \\t=\frac{113 \pm\sqrt{12769+4864} }{32} \\t=\frac{113 \pm\sqrt{17633} }{32} \\t=\frac{113+\sqrt{17633} }{32} \approx 7.68~s \approx7.7 s\\or\\t=\frac{113-\sqrt{17633} }{32} \approx~-0.62 ~s \approx-0.6~s[/tex]
negative~sign~rejected.
1. Linda says the two expressions (12x+16) - 6x and -4(x + 2) are equivalent
Is she correct Explain how you know by showing your work.
The probability of drawing three kings in a row from a standard deck of cards when the drawn card is not returned to the deck each time is..................
The probability of drawing three kings in a row from a standard deck of cards when the drawn card is not returned to the deck each time is 0.000055
The multiplication rule of probability can be used to determine the likelihood of drawing three kings consecutively from a standard deck of cards when the drawn card is not put back into the deck each time.
Since there are four kings in a deck of 52 cards, the likelihood of drawing a king from a standard 52-card deck is 4/52 or 1/13.
There are still 51 cards in the deck after the first king is drawn, and three of them are kings. Therefore, there is a 3/51 chance of drawing another king.
There are 50 cards left in the deck after drawing the second king, and two of them are kings. The likelihood of drawing a third king is therefore 2/50 or 1/25.
Therefore, the probability of drawing three kings in a row from a standard deck of cards when the drawn card is not returned to the deck each time is:
(1/13) x (3/51) x (1/25) = 3/54,600 or approximately 0.000055.
Hence, 0.000055 is the probability of drawing three kings in a row from a standard deck of cards when the drawn card is not returned to the deck each time.
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To effectuate such a transfer, the owner must follow certain legal procedures.
1. Execution
2. Delivery
3. Acceptance
4. Recording
- Transfer in real property is not always voluntary.
- May be without the knowledge of the owner
Or even in some cases, against his/her will
Transferring ownership of real property (land and buildings) can happen in a variety of ways, and it is not necessarily consensual.
A transfer can occur, for example, through eminent domain, in which the government takes private property for public use and compensates the owner for its worth. Transfers can also occur through foreclosure, which occurs when a borrower fails on a loan and the lender takes control of the property.
Regardless of the conditions, the legal steps for transferring ownership usually include execution, delivery, acceptance, and recording. The signing of a legal instrument that transfers ownership is referred to as execution. The transfer of custody or control of the property to the new owner is referred to as delivery. The new owner's agreement to accept the transfer is referred to as acceptance.
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Baker School's hockey games are 60 minutes long. Nico played for 30 minutes of the last game. What percent of the game time did Nico play?
Pick the model that represents the problem.
Dude he played for 1/2 of the game half of 60 is 30.
50%.
I'm I missing something?
As seen in the accompanying diagram, a person cantravel from New York City to Buffalo by goingnorth 170 miles to Albany and then west 280 milesto Buffalo.Buffalo280 milesAlbany170 milesNew York CityIf an engineer wants to design a highway to connectNew York City directly to Buffalo, at what angle, x,would she need to build the highway? Find theangle to the nearest degree. To the nearest mile,how many miles would be saved by travelingdirectly from New York City to Buffalo rather thanby traveling first to Albany and then to Buffalo?
By using trigonometry, we find that Traveling directly from New York City to Buffalo would save approximately 50 miles.
To find the angle at which the engineer should build the highway, we can use trigonometry. Let's call the distance between New York City and Buffalo "d". Then, the distance traveled if going through Albany would be 170 + 280 = 450 miles.
We can use the cosine function to find the angle x:
cos(x) = adjacent/hypotenuse = d/450
x = cos^(-1)(d/450)
To find the value of x, we need to know the value of d. If we assume that the distance between New York City and Buffalo is approximately 400 miles, then:
x = cos^(-1)(400/450) = 23.6 degrees (rounded to the nearest tenth)
Therefore, the engineer would need to build the highway at an angle of approximately 23.6 degrees.
To find how many miles would be saved by traveling directly from New York City to Buffalo rather than going through Albany, we can subtract the distances:
450 - d = 450 - 400 = 50 miles (rounded to the nearest mile)
Therefore, traveling directly would save approximately 50 miles.
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a) Write - 2x² - 12x - 8 in the form a (x + b)² + c, where a, b
and c are numbers.
What are the values of a, b and c?
b) Hence, write down the coordinates of the turning point of the
curve y = -2x² - 12x - 8.
On solving the question we can say that Therefore, the coordinates of equation the turning point are: (3/2, -35/2)
What is equation?In mathematics, an equation is a statement that two expressions are equal. The equation consists of her two sides divided by an algebraic equation (=). For example, the argument "2x + 3 = 9" asserts that the statement "2x + 3" equals the value "9". The goal of solving an equation is to find the values of the variables to make the equation true. Simple or complex equations, regular or nonlinear, and equations involving one or more factors are all possible. For example, the expression "x2 + 2x - 3 = 0" squares the variable x. Lines are used in many areas of mathematics, including algebra, calculus, and geometry.
[tex]a) -2(x² + 6x) - 8-2(x² + 6x + 9 - 9) - 8-2[(x + 3)² - 9] - 8-2(x + 3)² + 10[/tex]
Therefore, the expression -2x² - 12x - 8 can be written in the form [tex]a(x + b)² + c[/tex] as:
a = -2, b = -3, c = 10
b) The turning point of curve [tex]y = -2x² - 12x - 8[/tex] is at the apex of the parabola. The vertex coordinates are (-b/a, f(-b/a)). where f(x) is the function that defines the curve. In this case:
a = -2, b = -3
Therefore, the x-coordinate of the turning point is:
[tex]-x = -b/a = -(-3)/(-2) = 3/2y=-2(3/2)212(3/2)-8y=-2(9/4)-18-8y=-9/2-26y=-35/2[/tex]
Therefore, the coordinates of the turning point are:
(3/2, -35/2)
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b) Graph the probability distribution using a histogram and describe its shape
c) Find the probability that a randomly selected student is less than 20 years old.
d) Find the probability that a randomly selected student's age is more than 18 years
old but no more than 21 years old.
LOOK AT SCREENSHOT FOR FULL QUESTION
The peak of the histogram appears at age 19, and its shape is approximately symmetric. This indicates that the students' ages are evenly distributed, with a mean age of around 19.
What is probability?Probability is a gauge of how likely an occurrence is to take place. It is expressed as a number between 0 and 1, with 0 designating an impossibility and 1 designating a certainty for the occurrence.
For instance, if you flip an impartial coin, you could get either heads or tails. Because there is an equal possibility that the coin will land on its head or tails, the probability of getting heads on a single toss is [tex]0.5[/tex] , or 50%.
Given
c) To determine the likelihood that a pupil chosen at random is under 20 years old, we must add the probabilities of the top two bars in the histogram. Following are the results: P(age 20) = P(age = 17) + P(age = 18) [tex]= 0.05 + 0.15 = 0.2[/tex]
The likelihood that a pupil chosen at random is under [tex]20[/tex] years old is therefore [tex]0.2, or 20%[/tex] .
d) We must add the probabilities of the bars between the ages of 19 and 21, inclusive, in order to determine the likelihood that an arbitrarily chosen student is older than 18 but not older than 21. P(18 age 21) equals P(age = 19) + P(age = 20) + P(age = 21) [tex]= 0.35 + 0.25 + 0.1 = 0.7[/tex] .
Therefore, [tex]0.7, or 70%[/tex] , of an arbitrarily chosen student having an age that is greater than 18 but not greater than [tex]21[/tex] .
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what is the answer?
?
No, there is not enough information
Yes, because of the intermediate value theorem
Because g(x) is continuous on the interval, we can see that the correct option is the last one (counting from the top)
Does the value c exists in the given interval?Here we have the function g(x), and we know that it is continuous on the interval [1, 6], and that:
g(1) = 18
g(6) = 11
If it is continuous, then g(x) covers all the values between 18 and 11 in the given interval, this means that there must exist a value c in the given interval such that when we evaluat g(x) in that value c, we get the outcome 12, and we know this by the intermediate value theorem.
So the correct optionis the last one.
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true/false. when account groups are created, they will determine the valid number interval for each of the groups of general ledger accounts.
The statement " when account groups are created, they will determine the valid number interval for each of the groups of general ledger accounts " is false because it incorrectly states that account groups determine the valid number intervals for each group of general ledger accounts
Account groups in themselves do not determine the valid number intervals for each group of general ledger accounts.
Rather, the number intervals for each group of general ledger accounts are defined by the chart of accounts, which is a structured list of all the accounts used by an organization to define its financial reporting.
Account groups, on the other hand, are used to group together accounts with similar characteristics or usage, and to assign authorizations for access and maintenance of the accounts.
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School administrators asked a group of students and teachers which of two
school logo ideas, logo A or logo B, they prefer. This table shows the results.
Students
Teachers
Total
Logo A
14
14
28
Logo B
86
11
97
Total
100
25
125
Are being a student and preferring logo B independent events? Why or why
not?
A. Yes, they are independent, because P(student) = 0.8 and
P(student logo B) = 0.89.
B. No, they are not independent, because P(student) = 0.8 and
P(student logo B) 0.78.
C. No, they are not independent, because P(student) = 0.8 and
P(student logo B) * 0.89.
D. Yes, they are independent, because P(student) = 0.8 and
P(student logo B) 0.78...
B, No, they are not independent events because the probability of a student preferring logo B (0.78) is different from the overall probability of preferring logo B (0.89), which includes both students and teachers.
How to find independent events?To determine whether being a student and preferring logo B are independent events, we need to compare the probability of a student preferring logo B (P(student logo B)) with the overall probability of preferring logo B (P(logo B)).
P(student logo B) = 0.78 (from the table)
P(logo B) = (86 + 11) / 125 = 0.89
If the two probabilities are equal, then the events are independent. However, in this case, P(student logo B) is not equal to P(logo B), indicating that being a student and preferring logo B are dependent events. Therefore, being a student and preferring logo B are dependent events.
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Represent each number line by an inequality.
Answer:
Step-by-step explanation:
The inequality in the first equation is x > 8.
The inequality for the second graph is x ≤ -4 since it's a dot.
In a certain region of space the electric potential is given by V=+Ax2y−Bxy2, where A = 5.00 V/m3 and B = 8.00 V/m3.1) Calculate the magnitude of the electric field at the point in the region that has cordinates x = 1.10 m, y = 0.400 m, and z = 0.2)Calculate the direction angle of the electric field at the point in the region that has cordinates x = 1.10 m, y = 0.400 m, and z = 0.( measured counterclockwise from the positive x axis in the xy plane)
The direction angle of the electric field at the point (x = 1.10 m, y = 0.400 m, z = 0) is approximately 74.5 degrees clockwise from the positive x-axis in the xy plane.
To calculate the electric field at the point (x = 1.10 m, y = 0.400 m, z = 0), we need to take the negative gradient of the electric potential V:
E = -∇V
where ∇ is the del operator, which is given by:
∇ = i(∂/∂x) + j(∂/∂y) + k(∂/∂z)
and i, j, k are the unit vectors in the x, y, and z directions, respectively.
To calculate the magnitude of the electric field at the point, we first need to find the partial derivatives of V with respect to x and y:
∂V/∂x = 2Axy - By^2
∂V/∂y = Ax^2 - 2Bxy
Substituting the values of A, B, x, and y, we get:
∂V/∂x = 2(5.00 V/m^3)(1.10 m)(0.400 m) - (8.00 V/m^3)(0.400 m)^2 = 0.44 V/m
∂V/∂y = (5.00 V/m^3)(1.10 m)^2 - 2(8.00 V/m^3)(1.10 m)(0.400 m) = -1.64 V/m
Next, we can calculate the magnitude of the electric field:
E = -∇V = -i(∂V/∂x) - j(∂V/∂y) - k(∂V/∂z)
= -i(0.44 V/m) + j(1.64 V/m) + 0k
= (0.44 i - 1.64 j) V/m
The magnitude of the electric field is given by:
|E| = sqrt((0.44 V/m)^2 + (-1.64 V/m)^2) = 1.70 V/m
Therefore, the magnitude of the electric field at the point (x = 1.10 m, y = 0.400 m, z = 0) is 1.70 V/m.
To calculate the direction angle of the electric field, we need to find the angle that the electric field vector makes with the positive x-axis in the xy plane.
The angle can be found using the arctan function:
θ = arctan(Ey/Ex)
Substituting the values of Ex and Ey, we get:
θ = arctan(-1.64 V/m / 0.44 V/m) = -1.30 radians
The negative sign indicates that the direction angle is measured counter clockwise from the negative x-axis, which is equivalent to measuring clockwise from the positive x-axis.
Converting to degrees, we get:
θ = -1.30 radians * (180 degrees / pi radians) = -74.5 degrees
Therefore, the direction angle is approximately 74.5 degrees clockwise in the xy plane.
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Find the volume of the composite solid. Round your answer to the nearest tenth.
Answer:
5188.8 [cm³].
Step-by-step explanation:
1) V=V[1]+V[2], where V[1] - the volume of the cube with length of its side 10 [cm], V[2] - the volume of the sphere with radius 10 [cm].
[tex]2) \ V=10^3+\frac{4}{3} \pi*10^3=5.188790*1000=5188.8 \ [cm^3][/tex]
Prove the following using a direct proof:
The sum of the squares of 4 consecutive integers is an even integer
It ahs been proved by mathematical induction that the sum of the squares of 4 consecutive integers is an even integer.
How to solve Mathematical Induction?To prove that the sum of the squares of 4 consecutive integers is an even integer.
Let x, (x + 1), (x + 2), (x + 3) be the four consecutive integers.
The sum of the squares of these integers are:
S = x² + (x + 1)² + (x + 2)² + (x + 3)²
Expanding this gives us:
S = 4x² + 12x + 14
Simplifying this gives:
S = 2(2x² + 6x + 7)
The number 2x² + 6x + 7 is either even number or odd number.
However, since it is multiplied by 2x² + 6x + 7, the sum will always be an even number.
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5. Jeni put a cake in the
oven at 2:30. If the
cake takes 1 hours
to bake, at what time
should it be taken
out of the oven? What the answer
Answer:
3:30
Step-by-step explanation:
We know
Jeni put a cake in the oven at 2:30. The cake takes 1 hour to bake.
What time should it be taken out of the oven?
We take
2:30 + 1 = 3:30
So, it should be taken out of the oven at 3:30
Show your complete solution
4. 5x-13=12
Answer: x = 5
Step-by-step explanation:
To solve for x, we can first add 13 to both sides to isolate the variable term:
5x - 13 + 13 = 12 + 13
Simplifying the left side and evaluating the right side:
5x = 25
Then, divide both sides by 5 to isolate x:
5x/5 = 25/5
Simplifying:
x = 5
Therefore, the solution to the equation 5x - 13 = 12 is x = 5.
To solve for x in the equation 5x-13=12, we want to isolate the variable x on one side of the equation. We can do this by adding 13 to both sides of the equation:
5x-13+13 = 12+13
Simplifying, we get:
5x = 25
Finally, we can solve for x by dividing both sides of the equation by 5:
5x/5 = 25/5
Simplifying, we get:
x = 5
Therefore, the solution to the equation 5x-13=12 is x = 5.
solve this proportion: 5/a = 3/4
Answer:
[tex]a = \frac{20}{3}[/tex]
Step-by-step explanation:
A town doubles its size every 81 years. If the population is currently 15,085, what will the
population be in 405 years?
Submit
people
The population will be 482,720 in 405 years using exponential model that doubles its size every 81 years.
What is exponential growth?A form of growth known as exponential growth occurs when a quantity's rate of expansion is proportionate to its present value. In other words, the amount increases with time at a faster pace. Several natural and artificial processes, including population expansion, compound interest, and the spread of contagious illnesses, exhibit exponential growth.
The population increases using the exponential model given as:
[tex]P(t) = P_0 * 2^{(t/x)}[/tex]
Substituting the values P₀ = 15,085 and x = 81.
[tex]P(405) = 15,085 * 2^{(405/81)}\\P(405) = 15,085 * 2^5\\P(405) = 15,085 * 32\\P(405) = 482,720[/tex]
Hence, the population will be 482,720 in 405 years using exponential model, that doubles its size every 81 years.
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find two positive numbers that satisfy the given requirements. the sum of the first and twice the secind is 100 and the product is a maximum
Answer: The two positive numbers that satisfy the given requirements are 25 and 50.
Step-by-step explanation:
Let's call the two positive numbers x and y. We want to maximize their product while satisfying the condition that "the sum of the first and twice the second is 100", or mathematically:
x + 2y = 100
We can use algebra to solve for one of the variables in terms of the other:
x = 100 - 2y
Now we want to maximize the product xy:
xy = x(100 - 2y) = 100x - 2xy
Substituting x = 100 - 2y:
xy = (100 - 2y)y = 100y - 2y^2
To find the maximum value of this expression, we can take the derivative with respect to y and set it equal to zero:
d(xy)/dy = 100 - 4y = 0
Solving for y gives:
y = 25
Substituting y = 25 into the equation x + 2y = 100, we get:
x + 2(25) = 100
x = 50
Therefore, the two positive numbers that satisfy the given requirements are x = 50 and y = 25, and their product is:
xy = 50(25) = 1250
Ciara throws four fair six-sided dice. The faces of each dice are labelled with the numbers 1, 2, 3, 4, 5, 6 Work out the probability that at least one of the dice lands on an even number.
The likelihood that one or more of the dice will land on an even number is 1296.
How does probability work?The likelihood of an event is quantified by its probability, which is a number. It is stated as a number between 0 and 1, or in percentage form, as a range between 0% and 100%. The likelihood of an event increasing with probability of occurrence.
According to the given information:Four 6-sided dice are rolled what is the probability that at least two dice show least 2 die the same.
For 2 of the same: 5×5×642) =900
For 3 of the same: 5×643) =120
For 4 of the same: 644) =6
Combined: 900+120+6=1026
Total possibilities: 64=1296
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The probability that at least one of the dice lands on an even number is 15/16 or approximately 0.938.
What is probability?
Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, where 0 means the event is impossible and 1 means the event is certain to happen. The probability of an event can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes.
We can solve this problem by finding the probability that all four dice land on odd numbers and then subtracting this probability from 1 to get the probability that at least one of the dice lands on an even number.
The probability that one dice lands on an odd number is 3/6 = 1/2, and the probability that all four dice land on odd numbers is:
(1/2) × (1/2) × (1/2) × (1/2) = 1/16
Therefore, the probability that at least one of the dice lands on an even number is:
1 - 1/16 = 15/16
So the probability that at least one of the dice lands on an even number is 15/16 or approximately 0.938.
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The question is in the picture.
The composite function is obtained applying the inner function as the input to the outer function.
The functions for this problem are defined as follows:
Inner function: T(t) = 6t + 1.2.Outer function: N(T) = 20T² - 128t + 77.Hence the composite function is obtained replacing the two instances of T on the function N(t) by the definition of T(t), hence:
N(T(t)) = 20(6t + 1.2)² - 128(6t + 1.2) + 77
N(T(t)) = 720t² + 288t + 28.8 - 768t - 204.6.
N(T(t)) = 720t² - 480t - 175.8.
For a population of 18413 bacteria, we have that N(T(t)) = 18413, hence:
720t² - 480t - 175.8 = 18413
720t² - 480t - 18588.8 = 0.
The coefficients of the quadratic function are given as follows:
a = 720, b = 480, c = -18.588.8.
Using a quadratic function calculator, the positive solution is given as follows:
t = 4.76 hours.
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The image shows a representation of mountains of various heights, numbered 1, 2, and 3. The plain is labeled number 4. 2 4 At which point is air pressure lowest? O 1 02 3
The pressure is lowest at the point 1 on the mountain.
What is the relation between pressure and height?The total weight of the air over a unit area at any elevation may be thought of as the pressure at any elevation in the atmosphere. A particular surface has fewer air molecules above it at higher elevations than it does at lower elevations. This suggests that as one climbs higher, air pressure falls. The majority of the molecules in the atmosphere are confined close to the earth's surface by the force of gravity, therefore air pressure first drops quickly before becoming more slowly as it rises.
From the figure we see that, point 1 on the mountain is the highest point.
We know that, the as height increases the pressure becomes low.
Hence, the pressure is lowest at the point 1 on the mountain.
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The complete question is:
For each of the following parts, let T be the linear transformation defined in the corresponding part of Exercise 5 of Section 2.2. Use Theorem 2.14 to compute the following vectors: (a) (T(A)Ja, where A = (_ (b) [T(f(x))]a, where f(x) = 4 - 6x + 3x2. 1 3 (c) (T(A)], where A = C ) (d) [T(F(x))]y, where f(x) = 6 - 2 + 2x²
let T be the linear transformation, then (T(A)a = (7, 11) where T defined by T(x) = Ax and a = (-1, 2), and A = (1 4 -1 6). [T(f(x))]a = (1, 3) where T defined by T(f(x)) = f(1) + f'(1)x, f(x) = 4-6x+3x^2 and a = (1, 3). (T(A))y = (5 5). [T(f(x))]y = (-1 -4 0).
Let T be the linear transformation defined by T(x) = A x, where A = 1 4 -1 6, and let a be the vector a = (-1, 2). To compute (T(A)a, we have:
T(A)a = Aa = 1 4 -1 6 * (-1) 2
= (1*-1 + 42) (-1-1 + 6*2)
= (7, 11)
Therefore, (T(A)a = (7, 11).
Let T be the linear transformation defined by T(f(x)) = f(1) + f'(1)x, where f(x) = 4 - 6x + 3x^2, and let a = (1, 3). To compute [T(f(x))]a, we have:
f(1) = 4 - 6 + 3 = 1
f'(x) = -6 + 6x
f'(1) = 0
So, T(f(x)) = f(1) + f'(1)x = 1, and [T(f(x))]a = 1 * (1, 3) = (1, 3).
Therefore, [T(f(x))]a = (1, 3).
Let T be the linear transformation defined by T(x, y) = (2x + y, x + 3y). We are given A = (1 3 2 4) and want to compute (T(A)]y.
First, we need to find the matrix of T with respect to the standard basis of R^2:
[T] = [T(1,0)] [T(0,1)] = [2 1] [1 3] = (2 1)
(1 3)
Now, we can compute (T(A)]y using Theorem 2.14:
(T(A)]y = [T]_y[A]_y = [T]_y[1 2] = (5 5)
Therefore, (T(A)]y = (5 5).
Let T be the linear transformation defined by T(p) = p' - p'', where p' and p'' are the first and second derivatives of p, respectively. We are given f(x) = 6 - x + 2x² and want to compute [T(f(x))]y.
First, we need to find the matrix of T with respect to the standard basis of P2 (the space of polynomials of degree at most 2):
[T] = [T(1)] [T(x)] [T(x²)] = [0 -1 2]
[0 0 -2]
[0 0 0]
Now, we need to find the coordinate vector of f(x) with respect to the standard basis of P2:
[f(x)] = [6 -1 2]
Using Theorem 2.14, we can compute [T(f(x))]y:
[T(f(x))]y = [T]_y[f(x)]_y = [T]_y[6 -1 2] = (-1 -4 0)
Therefore, [T(f(x))]y = (-1 -4 0).
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_____The given question is incomplete, the complete question is given below:
For each of the following parts, let T be the linear transformation defined in the corresponding part of Exercise 5 of Section 2.2. Use Theorem 2.14 to compute the following vectors: (a) (T(A)]a, where A = (1 4 -1 6), (b) [T(f(x))]a, where f(x) = 4 - 6x + 3x^2. 1 3, (c) (T(A))y, where A =(1 3 2 4) (d) [T(F(x))]y, where f(x) = 6 - x + 2x².
Graph the parabola.
y=-2x²
Plot five points on the parabola: the vertex, two points to the left of the vertex, and two points to the right of the vertex. Then click on the graph-a-function
button.
The vertex is found by finding the x-coordinate first:
x = -b / 2a
x = -0 /2(-2) = 0
Plug x=0 back in to find the y-coordinate of the vertex:
y = -2(0)^2 = 0
The vertex is (0,0).
Now pick any two x-values to the left of 0 and any two to the right and calculate the y-values:
x = -1
y = -2(-1)^2 = -2
(-1, -2)
x = -2
y = -2(-2)^2 = -8
(-2, -8)
x = 1
y = -2(1)^2 = -2
(1, -2)
x = 2
y = -2(2)^2 = -8
(2, -8)
Plot those 5 points and you're done.
you have 984 grams of a radioactive kind of krypton. How mich will be left after 6 minutes if its half life is 3 minutes
After 6 minutes, 266 grams of a radioactive form of krypton will still be present.
What is unitary method?"A method to find a single unit value from a multiple unit value and to find a multiple unit value from a single unit value."
We always count the unit or amount value first and then calculate the more or less amount value.
For this reason, this procedure is called a unified procedure.
Many set values are found by multiplying the set value by the number of sets.
A set value is obtained by dividing many set values by the number of sets.
Since, its half-life is 3 minutes.
Hence, The amount of a radioactive kind of krypton after 6 minutes is,
⇒ 984 / 4
⇒ 246 grams
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{12x+6y=12y=x+15
what is x
The value of x in the given equation is 15/23.
What is an equation?Two expressions are combined in an equation by an equal symbol ("="). The "left-hand side" and "right-hand side" of the equation are the two expressions on either side of the equals symbol. Typically, we consider an equation's right side to be negative. Since we can balance this by deducting the right-side expression from both sides' expressions, this won't decrease the generality.
in the given equation, 12x+6y=12y=x+15
12x+6y=12y
2x+y=2y
y=2x
now we have,
12y=x+15
12(2x)=x+15
24x=x+15
x=15/23
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Solve for x algebraically, given the domain.
4sin x+2=0, 0≤ x<2π
Answer:
x = [tex]\frac{7\pi }{6}[/tex], [tex]\frac{11\pi }{6}[/tex] or x = 210°, 330°
Step-by-step explanation:
4sin(x) + 2 = 0
4sin(x) = -2
sin(x) = -1/2
x = [tex]\frac{7\pi }{6}[/tex], [tex]\frac{11\pi }{6}[/tex]
Select the correct answer from each drop-down menu.
Quadrilateral PQRS is
B to quadrilateral JKLM because quadrilateral PQRS is the image of quadrilateral JKLM after translating quadrilateral JKLM
6 units down and 6 units to the right, followed by dilation centered at the origin by a scale factor of
Bare congruent and the corresponding
In the two figures, the corresponding
e are proportional but not equal.
R
The two transformations applied to quadrilateral JKLM are rigid transformations, quadrilateral PQRS is congruent to quadrilateral JKLM, and the corresponding sides are proportional but not equal.
What is dilation?The dilation is a transformation in which all points are moved by the same scale factor, but the scale factor is different for each point. In this case, the dilation was centered at the origin and had a scale factor of . This means that all points were moved by the same scale factor of .
Quadrilateral PQRS is the image of quadrilateral JKLM after translating it 6 units down and 6 units to the right, followed by a dilation centered at the origin with a scale factor of . This means that quadrilateral PQRS is congruent to quadrilateral JKLM, and the corresponding sides are proportional but not equal.
In this case, the translation of quadrilateral JKLM was 6 units down and 6 units to the right.
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Is the function represented by the following table linear, quadratic or exponential?
The function represented by the table is linear, as it has a constant rate of change and is represented by a straight line.
What is function in mathematics?Function in mathematics is a relation between two sets, where one set is the input and the other set is the output. Functions are an important tool in mathematics and can be used to describe and model real-world phenomena. Functions take inputs, manipulate them and produce outputs. They can be used to represent relationships between two or more variables, or to represent a complex process. Functions allow us to break down complex problems into smaller, more manageable pieces and to study how changes in one variable affect other variables.
The function represented by the table is linear. It can be determined by the fact that the y-values change by the same amount every time the x-values increase by one unit. In this case, the y-values decrease by 2 each time the x-values increase by one unit. This is an example of a linear function.
Linear functions have the shape of a straight line and are characterized by having a constant rate of change. The constant rate of change is represented by the slope of the line, which in this case is -2. This means that for every one unit increase in the x-values, the y-values decrease by two.
A quadratic function is the opposite of a linear function, as it has a rate of change that is not constant. Quadratic functions are characterized by their parabolic shape and their rate of change increases as x-values increase. Exponential functions are characterized by their curved shape and increase exponentially as x-values increase.
In conclusion, the function represented by the table is linear, as it has a constant rate of change and is represented by a straight line.
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A large pan contains a mixture of oil and water. After 2 litres of water are added to the original contents of the pan, the ratio of oil to water is 1:2. However, when 2 litres of oil are added to the new mixture, the ratio become 2:3. Find the original ratio of oil to water in the pan
The original ratio of oil to water in the pan is 3:5.
What do you mean by ratio?
The term ratio can be defined as the relative size of two quantities expressed as the quotient of one divided by the other. The ratio of a to b is written as a:b or a/b.
Let the original volume of oil and water be x and y respectively.
x / (y+2) = 1 / 2
=> 2x= y+2 ------ (i)
(x+2) / (y+2) = 2 / 3
=> 3x + 6 = 2y + 4
=> 3x = 2y - 2 ------- (ii)
Substituting (i) in (ii)
3x = 2 (2x-2) - 2
3x = 4x- 4 - 2
3x = 4x -6
3x - 4x = -6
-x = -6
Thus, x=6
Substituting value of x in (i)
2(6) = y +2
12 = y + 2
Thus, y = 10
=> Hence, the ratio is 6:10 or 3:5.
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