Help! Which choice is the most efficient first step to solve this set of equations?
Answer:
Substitute 3x - 5 for y in the second equation.
Step-by-step explanation:
Generally, to solve the system of linear equations of x and y, the first step would be trying to eliminate x (or y).
Then turn the system into the equation of only y (or x).
Next, try to solve for y (or x).
Then substitute the solved y (or x) into the original system to work out x (or y).
**********
3 options (1 addition, 2 subtractions) do not eliminate x or y (x and y still exist after manipulation).
=> Remaining option relating substitution would be a reasonable choice.
Bob went out to dinner and paid a 15% tip on a $20 meal? How much is the total bill?
Answer:
23
Step-by-step explanation:
15% of 20 = 3 then add the 3 to the 20 to get 23
23Answer:
Step-by-step explanation:
15/100*20 = 3
20+3 = 23
Olivia is jogging at a speed of 1.6 meters per second. What is her speed in kilometers per hour?
Answer:
.6 se
Step-by-step explanation:
Answer:
5.76
Step-by-step explanation:
a p e x
given a multi-value attribute with a variable number of values, for which we need to process independently the values, it is recommended to consider a new dependent entiy to represent the values
Yes, when dealing with a multi-value attribute with a variable number of values that need to be processed independently.
Yes, when dealing with a multi-value attribute with a variable number of values that need to be processed independently, it is recommended to consider creating a new dependent entity to represent the values. This can help to simplify the design and make it easier to manage and maintain. The new entity can be linked to the original entity through a relationship, allowing each value to be processed independently while still maintaining the integrity of the data. Overall, this approach can improve the efficiency and effectiveness of the system, making it easier to work with and providing better results for the end user.
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it is fair to say that the ucr is: group of answer choices a mutually exclusive measure not a truly reliable measure an exhaustive measure all of the above
The UCR (Uniform Crime Reporting) is B. not a truly reliable measure.
The UCR is a program established by the FBI in 1930 to collect and analyze crime statistics from law enforcement agencies across the United States. Although it provides useful data and insights into crime trends, it is not without its limitations. One significant issue with the UCR is that it relies on voluntary reporting from law enforcement agencies, meaning that some areas may not provide complete or accurate data. This can lead to an underrepresentation of certain crimes or inconsistencies in reporting across jurisdictions.
Another limitation is that the UCR only includes reported crimes, excluding any unreported criminal activity. This means that the data does not necessarily provide a comprehensive picture of all crimes occurring in a given area. Additionally, the UCR uses a hierarchy rule, meaning that if multiple crimes are committed during a single incident, only the most severe crime is counted. This can result in an undercounting of less severe but still significant crimes.
In summary, although the UCR provides valuable information on crime trends and patterns, it is not a truly reliable measure due to its reliance on voluntary reporting, exclusion of unreported crimes, and hierarchy rule. Therefore, the correct option is B.
The question was incomplete, Find the full content below:
it is fair to say that the ucr is: group of answer choices
A. A mutually exclusive measure
B. Not a truly reliable measure
C. An exhaustive measure
D. All of the above
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Fill in the missing number.
70% of blank equals 14
Answer:
20
Step-by-step explanation:
14/0.7
Answer:
Step-by-step explanation:
Your question: 70 percent of what number equals 14?
Step 1: Multiply both sides by 100 to get 7,000 and 1,400.
Step 2: Divide both sides by 70 to get 100 and 20.
Step 3: Put it into fraction form. \(\frac{20}{100}\).
Step 4: Since in percentages, you typically only go up to 100, we can remove the 100 to leave us with just 20.
Step 5: We have our answer. 70% of 20 is 14.
Hope this helps! :D
how to find the initial value of an exponential function
a = y2 / (b^x2) ,To find the initial value of an exponential function, you can use the formula y = a * b^x, where y represents the final value, a represents the initial value, b represents the base, and x represents the exponent.
To solve for the initial value (a), you need to have at least two points on the exponential function. Let's say you have the point (x1, y1) and (x2, y2).
Step 1: Substitute the values of x1, y1, x2, and y2 into the formula y = a * b^x.
Step 2: Since the goal is to find the initial value (a), we can set up two equations using the given points.
For the first point (x1, y1):
y1 = a * b^x1
For the second point (x2, y2):
y2 = a * b^x2
Step 3: Divide the second equation by the first equation to eliminate the base (b):
y2/y1 = (a * b^x2) / (a * b^x1)
Step 4: Simplify the equation:
y2/y1 = b^(x2 - x1)
Step 5: Take the logarithm of both sides of the equation to isolate the exponent (x2 - x1):
log(y2/y1) = (x2 - x1) * log(b)
Step 6: Solve for (x2 - x1):
(x2 - x1) = log(y2/y1) / log(b)
Step 7: Substitute the value of (x2 - x1) into either of the original equations to solve for a:
a = y1 / (b^x1)
or
a = y2 / (b^x2)
Remember to use the same base (b) in all calculations. This will help you find the initial value (a) of the exponential function.
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help please :)))))))))))))))))))
Answer:
21600cm^3
Step-by-step explanation:
7200cm^3÷30cm=24cm
24cm×30cm×40cm
=21600cm^3
Lisa reads 1/2 of a 200 page book
in 4 days. How many days
would it take Lisa to read a 600
page book?
Answer: 24 days
Step-by-step explanation:
Takes her 4 days to read 1/2 of a 200 page book, or 100 pages.
4 days = 100 pages
X days = 600 pages
24 days = 600 pages
HELP!!! ITS DUE TODAY
Answer:
Well one thing that created a demand was the fact that more and more people were getting farms and also slaves were dying. It was mainly the colonization of the new world
Step-by-step explanation:
The history is the Portugese came to africa and started kidnapping them and taking them to portugal. they were looked at as a novelty so more and more people started to get them and also bring them to america with them
6-(5x-9) with the power of 2 for x=1
Answer:
C
Step-by-step explanation:
C
How to solve 26+6 using compensation strategy
The compensation strategy is a mental math strategy to solve easier the operations.
We have 26 +6
The first step is make one of the addends more friendly.
So its more easier to determinate if 26 becomes in 30
and. So we add 4 units then we subtarct 4 units to the other number.
26+4 = 30
6-4 = 2
30 +2 = 32
Then 26+6 = 32
4 2/3 ÷ 2 1/3 ? what is the quotient?
Answer: 42/21 or 2
Step-by-step explanation:
you first convert them to improper fractions, which is 14/3 and 7/3. Then, you multiply the reciprocal and get 14/3x3/7, and get 42/21. Simplify, and you get 2.
Question 6 Next, you select the basic statistics that can help your team better understand the ratings system in your data. Assume the first part of your code is: trimmed_flavors_df %>% You want to use the summarize() and mean() functions to find the mean rating for your data. Add the code chunk that lets you find the mean value for the variable Rating.
Based on the ratings system and the summarize() and mean() functions, the code chunk to add is summarize(mean(Rating)) and the mean rating is 3.185933.
How do you find the mean rating?To find the mean rating, the complete code should be trimmed_flavors_df %>% summarize(mean(Rating)).
This code would allow you to see the mean rating of your data by combining the summarize() and mean() functions such that you can display summary statistics.
Because of the "mean()" function, the statistic that will be displayed is the mean rating which in this case would be 3.185933.
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Find point G on AB such that the ratio of AG to GB is 3:2.
Using proportions, the coordinates of point G are given as follows:
(1.8, 1.6).
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.
The points A and B are given as follows:
A(-3, 4) and B(5,0).
For this problem, we have that the ratio of AG to GB is 3:2, hence:
AG = 3/5AB
G - A = 3/5(B - A).
The x-coordinate of G is found as follows:
x + 3 = 3/5(5 + 3)
x + 3 = 4.8
x = 1.8.
The y-coordinate of G is found as follows:
y - 4 = 3/5(0 - 4)
y - 4 = -2.4
y = 1.6.
Hence the coordinates of point G are given as follows:
(1.8, 1.6).
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please help with this !!!!
Answer:
0
Step-by-step explanation:
this is just to confuse us.
"t" is used instead of "x" (probably because the formula has something to do with "time"). but it does not matter.
and 3 different functional definitions have been given based on the value of the argument "t".
we need the functional value for t=2.
is 2 = 8 ? no. therefore the first definition does not apply.
is 2 = 10 ? no. therefore the second definition does not apply either.
is 2 unequal to 8 or 10 ? yes, 2 is 2 and not 8 and not 10.
so, the third definition applies :
f(2) = 2² - 3×2 + 2 = 4 - 6 + 2 = 0
Pls help me w thissssss
In this problem, we need to use multiplication and subtraction method to solve it.
_________________________________
x(y) means to multiply x with y
_________________________________
Note that {a = 7} and {b = 6}
First, we need to multiply 4 with {a = 7}, we get:
4(7) = 28
Then, we need to subtract {b = 6} from 28, we get:
28 – 6 = 22
Finally, this simplifies as:
4(7) – 6 = 22
Hope this helps :)
For those who want some points, what is the best game ever created?
Answer:
it has to be among us, i love that game
Step-by-step explanation:
Answer:
The best game ever created is either call of duty or Halo
A rectangle is 6 centimeters long and 4 centimeters wide. What is the area of the rectangle?
Answer:
\( \huge{\boxed{\mathfrak{Answer\hookleftarrow}}}\)
Length = 6 cm
Width = 4 cm
Area = ?
Area of a rectangle = length (l) × width (w)
Area = 6 × 4
Area = 24 cm²
→ The area of the rectangle is 24 cm².
(-4) + (-5) =
I’m confused
what is sum 5x7 equal up
Determine whether or not the vector field is conservative. If it is conservative, find a function f such that
F =∇.f
F(x, y, z) = eyzi + xzeyzj + xyeyzk
The vector field F(x, y, z) = eyzi + xzeyzj + xyeyzk is conservative, and a potential function f is f(x, y, z) = xeyzi + xy²ezj + xyzek + C
How to determine vector field?
To determine if a vector field is conservative, we need to check if its curl is zero. If the curl is zero, it implies that the vector field can be expressed as the gradient of a scalar function.
Taking the curl of F, we have:
curl(F) = (∂F₃/∂y - ∂F₂/∂z)i + (∂F₁/∂z - ∂F₃/∂x)j + (∂F₂/∂x - ∂F₁/∂y)k
Evaluating the partial derivatives, we get:
curl(F) = (z - z) i + (x - x) j + (y - y) k
= 0
Since the curl of F is zero, the vector field F is conservative. We can find a potential function f by integrating each component of F with respect to its respective variable:
f(x, y, z) = ∫eyzi dx = xeyzi + g₁(y, z)
∫xzeyzj dy = xy²ezj + g₂(x, z)
∫xyeyzk dz = xyzek + g₃(x, y)
Here, g₁, g₂, and g₃ are arbitrary functions of the remaining variables. Combining these results, we obtain the potential function:
f(x, y, z) = xeyzi + xy²ezj + xyzek + C
Where C is the constant of integration. Therefore, a potential function f exists for the given vector field F, and it is given by f(x, y, z) = xeyzi + xy²ezj + xyzek + C.
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Koda is making birdhouses for a park the instructions tell him how many of each wooden shape
Koda is making birdhouses for a park and he has instructions that tell him how many of each wooden shape he needs to use. This is important because the instructions are designed to ensure that the birdhouses are structurally sound and safe for birds to live in.
If Koda were to deviate from the instructions and use a different number of wooden shapes, it could compromise the stability of the birdhouse and potentially harm the birds.
Therefore, it is crucial that Koda follows the instructions carefully and uses the specified number of wooden shapes for each birdhouse.
By doing so, he can ensure that the birdhouses are of high quality and provide a safe and comfortable home for the park's feathered inhabitants.
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The center of a normal curve is a. cannot be negative b. always equal to zero c. is the mean of the distribution d. is the standard deviation
The center of a normal curve is the mean of the distribution, making option C the right choice.
A normal distribution—also known as the bell curve or De Moivre distribution—occurs naturally in a variety of circumstances. Bell curve symmetry is present. The data will split in two, falling half to the left and half to the right of the mean.
The characteristics of a normal curve are as follows:
Bell-like symmetrical form.The distribution's mean and median, both of which are situated in their center, are equal. ≈ 68% of the data is within one standard deviation of the mean. ≈ 95% of the data is within two standard deviations of the mean. ≈ 99.7% of the data is within three standard deviations of the mean.Thus, the center of a normal curve is the mean of the distribution, making option C the right choice.
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Which equation below and solution for x does the model represent?
A) 2x + 2x = 85, x=42.50
B) 4 + x = 85, x=21.00
C) x + x + x = 85, x=21.00
D) 4x = 85, x=21.25
Answer:
Option D
Step-by-step explanation:
Cost of 4 shirts all together = $85
Model given in the picture attached will be,
x + x + x + x = 85
4x = 85
\(\frac{4x}{4}=\frac{85}{4}\)
x = 21.25
Therefore, Option D will be the correct option.
What is the equation of a line parallel to 2x−3y=5 that passes through the point (−9,2)?
5. Beverly is serving hamburgers and hot dogs at her
cookout. Hamburger meat costs $3 per pound, and hot
dogs cost $2 per pound. She wants to spend no more than
$30.
a. Write an inequality to describe the situation.
b. Graph the solutions on a coordinate plane.
C. Give two combinations of pounds of hamburger and
hot dogs that Beverly can buy.
Answer:
Hamburger meat
Cost = $2 per poundVolume = x poundsTotal cost = 2xHot dogs
Cost = $3 per poundVolume = y poundsTotal cost = 3yBudget = $30a) Inequality:
2x + 3y ≤ 30b) The graph is attached
c) Combinations are reflected on the graph
A sphere is inscribed inside a cube with edges of 6 cm. In cubic centimeters, what is the volume of the sphere in terms of ?
Solve for x
If you don’t know how to do it don’t answer
What is the sum of the digits in the expansion of (10^36+26/18)
Answer:
=177
Step-by-step explanation:
The sum of the digits in the expansion (10³⁶ + 26/18) will be 18.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The expression is given below.
⇒ (10³⁶ + 26/18)
The sum of the digits in the expansion is given as,
⇒ 1 + 0 + 2 + 6 + 1 + 8
⇒ 18
The sum of the digits in the expansion (10³⁶ + 26/18) will be 18.
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