if two tables have a one-to-many relationship, which of the following do you typically need to add to the table on the "many" side?
When two tables have a one-to-many relationship, you typically need to add a foreign key to the table on the "many" side to link the records to the corresponding record in the "one" table.
In a one-to-many relationship, the table on the "one" side is usually the primary key table, and the table on the "many" side is usually the foreign key table. The foreign key is used to link the records in the "many" table to the corresponding record in the "one" table. This is done by adding a column to the "many" table that contains the primary key value from the "one" table.
When designing a database, it is important to establish relationships between tables to ensure data integrity and avoid redundant data. In a one-to-many relationship, one record in the primary key table can be associated with many records in the foreign key table. To establish a one-to-many relationship, you need to create a primary key in the "one" table and a foreign key in the "many" table. The foreign key is a column that contains the primary key value from the "one" table. For example, if you have a "customers" table and an "orders" table, the "customers" table would be the primary key table and the "orders" table would be the foreign key table. Each record in the "orders" table would have a foreign key column that contains the customer ID from the "customers" table.
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Light bulbs cost £3.40 each.
Yasmin buys as many as she can with £30.
How much change should she get?
Give your answer in pounds, £.
======================================================
Work Shown:
x = number of light bulbs
3.40x = total cost to buy x light bulbs, cost is in pounds
3.40x = 30
x = 30/(3.40)
x = 8.823529 approximately
Rounding down, we get 8
Note that,
3.40*8 = 27.20 pounds which is under budget3.40*9 = 30.60 pounds which is over budgetTherefore, the highest number of bulbs that can be bought is 8.
The change given will be 30-27.20 = 2.80 pounds
please help me before tomorrow and explain with words please I don't understand :(
factor the trinomial
-2h^2+5h+3
Tekan-Tekan Sdn. Bhd. has order for 200 Model AS-120 calculator for delivery on day 200. The calculator consists of three parts. Components 2 and 3 form subassembly 1 . Sub-assembly 1 and component 4 form the final assembly. Following are the work centers and times of each operation. Table Q3(a) shows routine file of the operation. Assuming: - Only one machine is assigned to each operation - The factory works on 8-hour shift, 5 days a week - All parts move in one lot of 200. (a) Illustrate the backward schedule based on the information given above. (12 marks) (b) Identify when component 3 must be started to meet the delivery date. (2 marks)
Component 3 must be started on day 197 to meet the delivery date of day 200.
To illustrate the backward schedule, we need to start from the delivery date (day 200) and work our way backward, taking into account the lead times and dependencies of each operation.
(a) Backward schedule:
Operation | Work Center | Time (hours) | Start Day
--------------------------------------------------------
Final Assembly | Work Center 1 | 1 | 200
Sub-assembly 1 | Work Center 2 | 2 | 199
Component 4 | Work Center 3 | 3 | 197
Component 2 | Work Center 4 | 4 | 196
Component 3 | Work Center 5 | 3 | ????
(b) To identify when component 3 must be started to meet the delivery date, we need to consider its dependencies and lead times.
From the backward schedule, we see that component 3 is required for sub-assembly 1, which is scheduled to start on day 199. The time required for sub-assembly 1 is 2 hours, which means it should be completed by the end of day 199.
Since component 3 is needed for sub-assembly 1, we can conclude that component 3 must be started at least 2 hours before the start of sub-assembly 1. Therefore, component 3 should be started on day 199 - 2 = 197 to ensure it is completed and ready for sub-assembly 1.
Hence, component 3 must be started on day 197 to meet the delivery date of day 200.
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Given h(x) = 5x + 2, find h(-6).
A zoo charges a rental fee plus $2 per hour for strollers. The total cost of 5 is $13. Assume the relationship is linear. Find and intercept the rate of change and initial value
The y-intercept is 3.
The rate of change is 2 and the initial value 5.
What is a linear equation?Equations whose variables have a power of one are called linear equations. One example with one variable is where ax+b = 0, where a and b are real values and x is the variable.
Given:
A zoo charges a rental fee plus $2 per hour for strollers.
The total cost of 5 is $13.
Assume the relationship is linear.
Let x be the number of hours.
And y be the total cost.
So,
y = 2x + m, where m is the rental fee.
Here, x = 5 and y = 13
So,
13 = 10 + m, where m is the rental fee.
m = 3
So, the equation is y = 2x + 3.
When x = 1,
y = 5.
Here, 3 is the y-intercept and 2 is the rate of change.
Hence, 3 is the y-intercept and 2 is the rate of change.
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What is 7/8 pound divided by 1/4 pound?
Answer:
3.5 pounds
Step-by-step explanation:
7/8 / 1/4 =7/8*4=7/2=3.5
f(n) = n^3– 2n
g(n)= 2n + 2
Find (f •g)(n)
Answer:
\(\boxed{(f~.~g)(x) = 2n^4 + 2n^3 - 4n^2 -4n}\)
.
Step-by-step explanation:
We know that
\(f(n) = n^3 - 2n\)
\(g(n) = 2n + 2\)
.
So
\((f~.~g)(x) = f(n)~.~g(n)\)
\((f~.~g)(x) = (n^3-2n)(2n + 2)\)
\((f~.~g)(x) = n^3(2n + 2) - 2n(2n + 2)\)
\((f~.~g)(x) = 2n^4 + 2n^3 - 4n^2 -4n\)
Answer:
2jj2j wnqj qkwk abaia aow w wka a9w wjw a8uaaia sks sis s8siwobsisi shkahza a
Step-by-step explanation:
bs ak la ya s dyua youa au ab fusn aigska
Find the slope of the line that passes through (99, -12) and (98, 57). How do I do this step by step
Answer:
-69. Nice!
Step-by-step explanation:
The slope of a line between two points is defined as the ration between the vertical distance and the horizontal distance - note that it doesn't matter if you go from the first to the second point, or the opposite, signs will end up fixed anyways. Let's get calculating!
\(\Delta y = -12 -57 = -69 \\ \Delta x = 99 - 98 = 1\)
Your slope is \(m = {\Delta y \over \Delta x}={-69 \over 1 } = -69\)
Simplify this please
(21)(x^6)(y^5) / (14)(x^2)(y^9)
Step 1: Coefficients
---This is just like simplifying fractions!
21 / 14 = 3 / 2
Step 2: Variables with exponents
---Remember to subtract exponents because this is division!
x^6 / x^2 = x^4 / 1
y^5 / y^9 = 1 / y^4
Answer: (3)(x^4) / (2)(y^4)
Hope this helps!! :)
Evaluate the expression for x=-5,y=-7, and z=9
Answer:
Is 11
Step-by-step explanation:
x+(-y)+z —> -5 +(+7)+9 = -5+7+9 = 11
I’ll give Brainliest!
What is the solution to this system of equations?
A. (-1,3)
B. (3,-1)
C. (6,-2)
D. (-2, 6)
Answer:
(-2,6) 〆(・∀・@)
Step-by-step explanation:
The Two Lines intercept.
A taxi service charges $2 for the first mile and then $1. 20 for every mile after that. The farthest the taxi will
travel is 25 miles.
If a represents the number of miles traveled, and y represents the total cost of the taxi ride, what is the most
appropriate domain for the situation?
The appropriate domain for the number of miles travelled by the taxi is found as: [0, 25]
Explain about the linear equation?In a two-variable linear equation, x and y have a linear connection, meaning that the value of any one of the variables, y, relies upon that value of the other, x.
Cost for first mile of taxi service = $2.00
Additional cost = $1.20 per mile.
Peak distance = 25 miles.
a = number of miles traveled by taxi.
y = total cost of the taxi ride
The linear equation forms:
y = $1.20a + $2.00
When a = 0; y = $2.00
a = 25 ; y = $1.20*25 + $2.00 = 32
Thus, the appropriate domain for the number of miles travelled by the taxi is found as: [0, 25]
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Almost all medical schools in the united states require students to take the medical college admission test (mcat). The total score of the four sections on the test ranges from 472 to 528. In spring of 2019, the mean score was 500. 9, with a standard deviation of 10. 6.
What is the question for this so I can answer it?
3 years ago, the ratio of Tina's age to Carl's age was 2:7
Tina is now 15 years old and Carl is now x years old.
Find the value of x
Answer: x = 45
Step-by-step explanation:
Given information
Tina's age (now) = 15 years old
Carl's age (now) = x years old
Ratio of age (3 years ago) = Tina : Carl = 2 : 7
Set equation according to the given information
(15 - 3) / (x - 3) = 2 / 7
Cross multiply
7 (15 - 3) = 2 (x - 3)
Simplify by subtraction in the parentheses
7 (12) = 2 (x - 3)
Simplify by multiplication
84 = 2 (x - 3)
Divide 2 on both sides
84 / 2 = 2 (x - 3) / 2
42 = x - 3
Add 3 on both sides
42 + 3 = x - 3 + 3
\(\boxed{x=45}\)
Hope this helps!! :)
Please let me know if you have any questions
Answer:
x = 45
Step-by-step explanation:
Let the present age of Carl be x.
Given Tina's present age is 15 and 3 years ago, the ratio of Tina's and Carl's ages was 2:7
Then 3 years ago, Tina's age will be
\( \\ 15 - 3 = 12 \: years\)
and, Carl's age will be x - 3
and they are in the ratio 2:7.
therefore,
\( \\ \: \: \: \: \: \: \: \: 12 \ratio(x - 3) = 2 \ratio7\)
\( \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{12}{x - 3} = \frac{2}{7} \)
\( \\ \sf \: by \: cross \: multiplication\)
\( \\ \: \: \: \: \: \: 12 \times 7 = 2(x - 3) \)
\( \\ \: \: \: \: \: \: x - 3 = \frac{84}{2} = 42\)
\( \\ \: \: \: \: \: \: \: \: \: \: \: \: x = 42 + 3\)
\( \\ \: \: \: \: \: \: \: \: \: \: \: \: \therefore \: \: x = 45\)
A clay specimen, 25 mm thick, has been tested in an oedometer apparatus with two way rainage, and it is observed that 50% of the consolidation settlement occurs in 1 hour. A ayer of the same clay is observed to settle 10 mm in 10 years and after many years to settle (total primary consolidation) by 35 mm. Determine the thickness of the clay layer if it drains only from upper surface
The thickness of the clay layer, which drains only from the upper surface, can be determined based on the consolidation settlement observations. With 50% of consolidation settlement occurring in 1 hour for a 25 mm thick specimen, and a total primary consolidation settlement of 35 mm occurring over many years, the thickness of the clay layer is approximately 87.5 mm.
The consolidation settlement of a clay specimen can be used to estimate the thickness of a clay layer that drains only from the upper surface. In this case, the observed settlement data provides valuable information.
Firstly, we know that 50% of the consolidation settlement occurs in 1 hour for a 25 mm thick clay specimen. This is an important parameter for calculating the coefficient of consolidation (Cv) using Terzaghi's theory. From the Cv value, we can estimate the time required for full consolidation settlement.
Secondly, we are given that the same clay settles 10 mm over 10 years and eventually settles a total of 35 mm over a longer period. This long-term settlement is known as the total primary consolidation settlement. By comparing this settlement value with the settlement data from the oedometer test, we can determine the thickness of the clay layer.
To calculate the thickness, we can use the concept of the consolidation settlement ratio. The ratio of the total primary consolidation settlement to the consolidation settlement at 50% completion is equal to the ratio of the total thickness to the thickness at 50% completion. Applying this ratio, we can determine that the thickness of the clay layer, which drains only from the upper surface, is approximately 87.5 mm.
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Help me Asap!!!!!!!!
-3x +5 (x+3)=23
−3x+5(x+3)=23
−3x+5(x+3)=23
−3x+(5)(x)+(5)(3)=23
−3x+5x+15=23
(−3x+5x)+(15)=23
2x+15=23
2x+15−15=23−15
2x=8
2 2
x=4
Answer:
x=4
Step-by-step explanation:
Please show how you got that answer.
Answer:
8x^2 + 8y^2 - y^3
Step-by-step explanation:
3x + 3y + 5x + 5y - y^3- (combine like terms)
8x^2 + 8y^2 - y^3
Martin climbs 3 meters in the first 10 minutes How many meters does Martin climb in 60 minutes? Hint: Either multiply 3 by 6 or set up this proportion and solve for x 3/10 = x/60
The distance Martin climbs in 60 minutes is 18 meters
Calculating Distance climbedFrom the question, we are to determine how many meters Martin can climb in 60 minutes
Let the distance he climbs in 60 minutes be x
From the given information,
Martin climbs 3 meters in the first 10 minutes
If Martin climbs 3 meters in 10 minutes
Then,
Martin will climb x meters in 60 minutes
Thus,
x × 10 = 3 × 60
Solve for x
10x = 180
x = 180/10
x = 18
Hence, the distance is 18 meters
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Becoming a fine artist can happen overnight.
True
False
Answer:
Step-by-step explanation:
True. But there is a very high chance of not happening
What is the volume of a rectangular prism with the dimensions: base 3 1/4
cm, height 2 1/2
cm, and length 4 1/2
cm?
Answer:
V=whl=3.25·2.5·4.5=36.5625 cm
Step-by-step explanation:
Formula: V=whl
Width and base are interchangeable words so all you do is plug the base into (w).
Turn the fractions into decimals and multiply.
3 1/4 = 3.25
2 1/2 = 2.5
4 1/2 = 4.5
3.25*2.5*4.5 = V
V = 36.5625 cm
What is 22,442 divide by 12
Answer: 1870.2
Step-by-step explanation:
Hope this helps!
Answer:
22442 ÷ 12 = 1870.16666.....
A ball is dropped from a height of 600 feet. The function describing the height of the ball at t seconds after it dropped is \(f(t)=-16t^2+600\).
a) Find the average velocity of the object during the first 3 seconds.
b) Verify that at some time during the first 3 seconds the instantaneous velocity equals the average velocity. Find that time.
The average velocity: _ ft/sec
The instantaneous velocity equals to the average velocity at t = _ sec
The average velocity of the object after during the first three seconds is: 48m/s
The time at which the instantaneous velocity equals the average velocity within the first three seconds is 1.5 seconds.
What is instantaneous and average velocities?Instantaneous velocity is the speed of an object at a particular point in time.
Average velocity is the velocity of an object after covering a certain distance for a period of time
Analysis:
Given
initial height = 600 feet
Height with respect to time = f(t) = -16\(t^{2}\) + 600
a) Height at t = 0 = 600 feet
Height at t = 3 seconds = f(3) = -16\((3)^{2}\) + 600 = 456 feet
Distance travelled = 600 - 456 = 144 feet
Average velocity = distance travelled/time taken = 144/3 = 48 feet/seconds
b) instantaneous velocity at time t = \(\frac{df(t)}{dt}\) = \(\frac{d(-16t^{2} + 600) }{dt}\) = -32t
when instantaneous velocity equal average velocity
-32t = -48
t = 1.5 seconds
In conclusion, the Average velocity after 3 seconds is 48 feet per seconds and the time taken for the average velocity to equal the instantaneous velocity is 1.5 seconds.
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consider a symmetric matrix a. if the vector v is in the image of a and w is in the kernel of a, is v necessarily orthogonal to w?
Yes, the vector v is necessarily orthogonal to w if v is in the image of the symmetric matrix A and w is in the kernel of A.
Yes, the vector v is necessarily orthogonal to w if v is in the image of the symmetric matrix A and w is in the kernel of A. This is due to the fact that for any symmetric matrix A, the image (column space) and kernel (null space) are orthogonal subspaces. Since v is in the image of A and w is in the kernel of A, their dot product must be zero, indicating orthogonality.
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HEY JUST LETTING EVERYONE KNOW DO NOT CLICK ON LINKS THEY ARE NOT AN ANSWER TO YOUR QUESTION STAY SAFE
Answer:thanks :)
Step-by-step explanation:
Answer:
Thx or the notice and free points
THIS IS TRUE NOT FAKE
WARNING!!!
Step-by-step explanation:
Which 2 numbers have a mean of 10 and a range of 4?
Answer:
12 and 8
Step-by-step explanation:
basic knowledge of math i guess
hope that helps love
Solve 5 (1 + x) = 5x + 5
Step-by-step explanation:
5(1+x)
= 5 + 5x
= 5x + 5
.......
Answer:
(−∞,∞)
Step-by-step explanation:
5(1+x)=5x+5
5*1=5
(5+x)=5x+5
5*x=5x
5+5x=5x+5
5-5=0
5x-5x=0
The graph of the function f ( x ) is shown
The true statements for the given function f(x) are:
The value of g(1) is 3 and the y- intercept of g(x) is at the point (0, 1) .
How to calculate the values of the function?The function g(x) = f( x - 3 )
g (1) = f (1 -3 )
= f (-2 )
= 3
g (-1) = f (-1 -3)
= f (-4)
= - 1
Substituting , x = 0 to find the y intercept of g(x)
g ( 0 ) = f ( 0 - 3)
=f (-3)
=1
The y intercept of g(x) is at the point (0, 1)
Thus, options 1 and 4 are the true statements for the given function.
What are functions?Function is a mathematical phrase, rule, or law that establishes the relationship between an independent variable and a dependent variable.In science, engineering, and the majority of the mathematical disciplines, functions are often utilized.Functions are reportedly the central objects of inquiry in the majority of mathematical disciplines. Although some authors establish a distinction between maps and functions, functions are also referred to as maps or mappings.To learn more about functions, refer:
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12. Two very long parallel wires perpendicular to the xy plane and d = 8m eport. They carry identical currents - 90 A out of the page (*2 direction) The magnitude of the magnetic field generated by these wires at the point (* = 4 m. y 4 m) is a) 1.50x10T b) 2.50x10"T IT T c) 3.50x10'T ALATT
The magnetic field generated by the wires at the point (x=4m, y=4m) carrying identical currents of 90A out of the page is 2.50 x \(10^{-6\) T or 2.50 μT.
Hence option b is correct.
According to the given information,
We can use the Biot-Savart Law to calculate the magnetic field generated by these wires at the given point.
Using the formula, we get:
B = (μ0/4π) I [(sinθ1 + sinθ2) / 2] / d,
Where,
μ0 is the permeability of free space (4π x \(10^{-7}\) T m/A),
I is the current (90 A),
θ1 and θ2 are the angles between the wire and the vector pointing from the wire to the given point,
And d is the distance between the wires (8 m).
To find θ1 and θ2, we can use Trigonometry:
θ1 = sin inverse (y/d)
= sin inverse (4/8) = 30°
θ2 = sin inverse [(y-d)/d]
= sin inverse [(4-8)/8]
= -30°
Substituting these values into the formula, we get:
B = (4π x \(10^{-7}\) T m/A) 90 A [(sin30° + sin(-30°)) / 2] / 8 m
B = 2.50 x \(10^{-6\) T
= 2.50 μT
Therefore, the correct option is (b) 2.50 x \(10^{-6\) T (or 2.50 μT).
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The complete question is attached below:
Which choice is equivalent to the quotient below? √64/√16a) √4/4b) √8/2c) 2d) √2
Answer: option c