The required value of the coefficient of x is given as 12.
A simplified value of the coefficient of x is to be determined.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
here,
In order to simplify the given expression add the like terms first,
8x-3+4x + 3 = 180
x + 4x - 3 + 3 = 180
12x = 180
Thus, the needed coefficient of x value is provided as 12.
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A store is offering a 30% discount on all jeans. If the regular price of a pair of jeans is $49. 99, what is the sale price of the jeans? responses.
When a store is offering a 30% discount on all jeans. If the regular price of a pair of jeans is $49.99, then the sale price of the jeans after discount will be $34.99 per pair.
The computation of the discounted price or the actual sales price of the jeans after applying the given discount can be calculated using the generalized formula, and putting the values of the provided information, as below,
Sale Price = Regular Price – Discount Rate
Sale Price = 49.99 – 30%
Sale Price = 49.99–14.97
Sale Price = $34.99
Therefore, the actual sales price of the pair of jeans will be $34.99.
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50 POINTS! PLEASE HELP?
please answer it like the example
The mapping diagram above does not represent a function since for each number in Set A (the input) where there are multiple mappings from Set B (the output).
What is a function?In Mathematics, a function simply refers to a mathematical expression which is typically used for defining and representing the relationship that exists between two or more variables such as an ordered pair.
This ultimately implies that, a function is typically used in mathematics for uniquely mapping an input variable (Set A) to an output variable (Set B).
Based on the mapping diagram shown above, we can reasonably infer and logically deduce that the inputs (4, 3), (-2, 3), (8, 6), and (4, 7) are ordered pairs which does not represent a function because they indicate multiple mappings in Set B (the output).
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a medical researcher surveyed a large group
The probability that the person selected will be someone whose response is never and who is a woman is 0.0636 = 6.36%.
A probability of an occurrence in the context of a problem is calculated by dividing the desired outcomes in the problem by the entire number of outcomes in the problem.
In the context of this problem, these outcomes are given as follows:
Desired outcomes: people whose response is never and who are women.
Total outcomes: all participants.
Hence, as all participants represent the desired outcomes, the probability that the person selected will be someone whose response is never and who is a woman is the relative frequency of people who are women and who respond never, which is: 0.0636 = 6.36%.
Missing question:
(Refer to the image for the complete question)
One person surveyed will be selected at random:
What is the probability that the person selected will be someone whose response is never and who is a woman?
What is the probability that the person selected will be someone whose response is never 0r who is a woman?
What is the probability that the person selected will be someone whose response is never given and that the person is a woman?
For the people surveyed are the events of being a person whose response is never and being woman independent?
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M is the Midpoint of AB. Find. the coordinates of A given. M(-6 -3/2) and B(- 1, 3)
(I type the three Wrong)
Answer: (-11,0) (Please make sure this answer is correct, as I am not a master...)
Step-by-step explanation:
We can solve this a super simple way.
The midpoint is (-6,-3/2) and the coordinate B is (-1,3)
We notice that we change y by positive 5 and we change our x by negative 3/2, from M to B. So to get to A from M, we change y by -5 and change our x by positive 3/2...
So we have:
(-6-5,-3/2+3/2)
(-11,0)
So the coordinate of A is:
(-11,0) (Please make sure this answer is correct, as I am not a master...)
What is 25+(−15)−(−10)?
When two numbers have the same sign, the result will be the number with the larger absolute value. 25 + (-15) - (-10) = 30
To calculate 25 + (-15) - (-10), we must first look at the order of operations. We start with the parentheses, so we need to calculate -15 and -10 first. When two numbers have the same sign, the result will be the number with the larger absolute value. In this case, -15 and -10 both have negative signs, so the result will be -15.
Next, we move on to the addition and subtraction signs. We add 25 and -15 to get 10. Then we subtract -10 from 10, and the result is 30. So, 25 + (-15) - (-10) = 30.
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elizabeth's family went to nyc for their vacation. at the gift shop on liberty island, valerie bought three t-shirts and four keychains for $134, and jennifer bought four t-shirts and five key chains for $175. find the price of each item.
Using the elimination method, the price of one t-shirt is $30 and one key-chain is $11.
In the given question, Elizabeth's family went to NYC for their vacation.
At the gift shop on Liberty Island, Valerie bought three t-shirts and four key chains for $134, and Jennifer bought four t-shirts and five key chains for $175.
We have to find the price of each item.
Let the price of one t-shirt = $x
Let the price of one Key chain = $y
According to question
Price of three t-shirts and four key chains = $134
So the equation is
3x + 4y = $134……………….(1)
Also,
Price of four-shirts and five Key chains = $175
So the equation is
4x+5y = $175……………………..(2)
Now solving the equation using the elimination method.
Multiply Equation (1) by 5 and Equation (2) by 4, we get
15x+20y = 670....................(3)
16x+20y = 700......................(4)
Subtract equation 4 and 3, we get
x = 30
Now put the value of x in equation 1,
3*30 + 4y = $134
90+4y=$134
Subtract 90 on both side, we get;
4y = 44
Divide by 4 on both side, we get;
y = 11
Hence, the price of one t-shirt is $30 and one key-chain is $11.
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There is a “buy two, get one free” sale on energy bars that regularly cost $1.25 each. How much do four bars cost?
Answer:
5
Step-by-step explanation:
1.24 × 4 = 5
or it can be 1.24 ÷2 =0.265
solving systems by substation
x-4y=15
3x-12y=12
Answer:
There is no solution
Step-by-step explanation:
x - 4y = 15
3x -12y = 12
Times the first equation by -3
-3x +12y = -45
3x - 12y = 12
0 = -33
This is untrue; 0 is not equal to -33
So, there is no solution for this system.
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C'D'
is a translation of
CD
. Write the translation rule.
-
Translation is one of the four types of mathematical transformations that may be applied to a function graph.
(x, y) = (x + a, y + b)
Describe translation.In mathematics, a translation is the up, down, left, or right movement of a form. Because the translated shapes appear to be exactly the same size as the original ones, they are consistent with one another. Just one or more routes have been altered. There is no change in the form because it is just being moved from one location to another.
Rule of TranslationWhen the shape is moved towards the left by k units, then replace x with x - k.
When the shape is moved towards the right by k units, then replace x with x + k.
When the shape is moved up by k units, then replace y with y + k.
When the shape is moved down by k units, then replace y with y - k.
Example: What are the new coordinates when the translation (x, y) → (x - 2, y + 3) is applied to the point (2, 5).
Solution:
The coordinates of old point (preimage) are (x, y) = (2, 5). Now, applying the given translation to this point,
x - 2 = 2 - 2 = 0
y + 3 = 5 + 3 = 8
Thus, the coordinates of the translated point (image) are (0, 8).
This was the example of translation.
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3
6
1
2
8
7
Press "Deal" to receive your cards.
Drag cards from your hand to the red and blue areas.
GOAL: Create two groups of cards with the SAME SUM
using as many cards as possible.
Submit
Answer:
I'm sorry I don't know
Step-by-step explanation:
........
The monthly income of a man is Rs. 53000. He deposits 20% of his yearly income in the Civil investment Fund and 10% in Charity. If Rs.300000 is his yearly income exempted and 1% social security charge and 15% tax is imposed yearly, how much tax should he pay?
Answer:
Monthly income of a Man is ₹53000
Total salary earned in an year = 53000 × 12
= 636000
20% in civil investment fund.
So, 636000 × 20 ÷ 100 = 127200.
10% in charity.
So, 636000 × 10 ÷ 100
= 63600.
1% is social security tax on first 300000 = 3000.
300000 × 15 ÷ 100 = 45000.
Total tax he should pay = Amount remained is 390840
Step-by-step explanation:
#46. Find the slope?
Answer:
Step-by-step explanation:
The answer as I believe is H.
I just used the rise/run method, so you’ll go six up and 5 to the left ( the answer is negative because you’re moving to the left).
Hope this helps
a laptop computer is purchased for . each year, its value is of its value the year before. after how many years will the laptop computer be worth or less? (use the calculator provided if necessary.)
After 7 years the laptop computer will be worth $200 or less.
Given:
A laptop computer is purchased for $1400 .
Each year, its value is 75% of its value the year before.
After how many years will the laptop computer be worth $200 or less = ?
1400(0.75)t≤ 200
0.75t ≤ 1/7
ln(0.75t) ≤ ln(1/7)
tln(0.75) ≤ ln(1/7)
t ≥ ln(1/7)/ln(0.75)
t ≥ 6.76
The natural log of a number between 0 and 1 is negative, and dividing by a negative switches the sign.
So, after 7 years, the laptop computer will be worth $200 or less.
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In the expansion of (2a + 4b), which of the following are possible variable terms? Explain your reasoning.
a²b³; a8; a5b³; ab8; a³b5; a7b; a6b5; b8
The possible variable terms for the given expression are a⁸, a⁵b³, a³b⁵, a⁷b, and b⁸.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The given expression is (2a+4b)⁸.
The expansion is
(2a+4b)⁸=256a⁸+4096a⁷b+2867a⁶b²+114688a⁵b³+286720a⁴b⁴+458752a³b⁵+458752a²b⁶+262144ab⁷+65536b⁸
Hence, in the expansion of (2a+4b)⁸ the possible variable terms are a⁸, a⁵b³, a³b⁵, a⁷b, and b⁸.
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A figure on a coordinate plane is dilated. Point a A(3,9) is dilated to A(1,3). Royce says the dilation can be represented by (1/3x, 1/3y) Ruby says the dilation can be represented by (3x, 3y). Who is correct?
Royce statement is the correct statement that is dilation can be represented by (1/3x, 1/3y).
What is a coordinate plane?
Two number lines combine to generate the two-dimensional surface known as the coordinate plane. The x-axis is a single horizontal number line. The y-axis is the name of the vertical number line that is the other number line. The origin is where the two axes come together. The coordinate plane can be used to graph points, lines, and other things.
Scale Factor is defined as the ratio of the size of the new image to the size of the old image.
The x-coordinate of old point is 3.
The y-coordinate of old point is 9.
The x-coordinate of new point is 1.
The y-coordinate of new point is 3.
The dilation is (x-coordinate of old point)/ (x-coordinate of new point) = 1/3.
The dilation is (y-coordinate of old point)/ (y-coordinate of new point) = 3/9 = 1/3.
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if 80% of the drivers in the community are in the low-risk category this year (10% in medium- risk and 10% in high-risk), what is the probability that a driver chosen at random from the community will be in the low-risk category for the next year? the year after next?
The probability that a driver chosen at random from the community will be in the low-risk category for the next year is 0.8
Probability:
In math, the ratio of the times an event is likely to occur divided by the total possible events is known as probability.
Given,
Here we need to find if 80% of the drivers in the community are in the low-risk category this year, then the probability that a driver chosen at random from the community will be in the low-risk category for the next year.
Here we know that, 80% of the drivers in the community are in the low-risk category this year.
Then as per the definition of probability, the the community will be in the low-risk category for the next year is calculated as,
=> 80/100
=> 0.8
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An art class is making a mural for the
school that has a triangle drawn in the middle. The length of
the bottom of the triangle is x. Another side is 1 more than three
times the length of the bottom of the triangle. The last side is 2 more
than the bottom of the triangle. Write an expression for the
perimeter of the triangle. Then combine like terms.
The expression representing the perimeter of the triangle is (5x+3)
What is an expression?An expression in maths is a sentence with a minimum of two numbers or variables and at least one maths operation.
Given that, The length of the bottom of the triangle is x. Another side is 1 more than three times the length of the bottom of the triangle. The last side is 2 more than the bottom of the triangle.
Let the bottom length of the triangle be x, then, according to question, other two sides will be, (3x+1) and (x+2)
Perimeter = sum of all the side
Perimeter = x+x+2+3x+1
= 5x+3
Hence, The expression for the perimeter of the triangle is (5x+3)
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Someone help please thank you show your work 100 points!!
Answer:
A
Step-by-step explanation:
y=-2 when x=-4 y=-4 when x=-8
what's given: 4. what's given:2
-4k=-2. -8k=-4
-4/4. -2/4. -8/8. -4/8
k=0.5. k =0.5
0.5(2) =1. 0.5(2)=1
Answer:
(a) no; (b) no; (c) yesy=5x; b=1/2a; m = 5nk = 5; x = 9.8Step-by-step explanation:
You want to identify the proportional relations in the given tables and equations, and you want to find and use the constant of variation given that y=35 when x=7.
Proportional relationA proportional relation is one that has an equation of the form ...
y = kx
One variable is a constant multiple of the other. If the relation cannot be put in this form, it is not a proportional relation.
ApplicationThe value of k in the above equation can be found as ...
k = y/x . . . . . . . divide both sides by x
This is a constant if the relation is proportional.
1a.y/x = -8/-4 = -4/-2 ≠ 18/6 . . . . . not a proportional relation
1b.y/x = -4/-5 ≠ 10/2 . . . . . not a proportional relation
1c.y/x = -12/-3 = 24/6 = 32/8 = 4 . . . . . a proportional relation
2.
You are looking for equations of the form y = kx. The only ones having that form are ...
y = 5xb = 1/2am = 5nThe others represent inverse proportions and a linear (not proportional) relation.
3.As we saw above, the constant of variation is ...
k = y/x = 35/7
k = 5
Then the value of x can be found from ...
49 = 5x
49/5 = x = 9.8
Which of the following expressions represents sin x + sin y= + y2? 0 A dy = 2.2-COSI 2y-cosy dz 0 В. dy 2x+cos3 2y+cos y du o dy de 2y-cos y 2.1-COSI O D dy 2.1-cos2 2y-cosy O E dy d 2r+COST 2y+cos y
- [(2x - cos x) / (2y - cos y)] of the following expressions represents sin x + sin y = x² + y², using the concept of differentiation.
What is differentiation?One method is to determine a function's derivative by differentiation. Finding the instantaneous rate of change of a function depending on one of its variables is a technique known as differentiation in mathematics.
Differentiation refers to the process of calculating a function's derivative. The derivative, when applied to two variables x and y, is the rate at which x changes in relation to y. To calculate the immediate rate of change of quantities, differentiation is used.
sin x + sin y = x² + y²
Differentiating w.r.t x
d/dx (sin x + sin y) = d/dx (x² + y²)
or, cos x + cos y dy/dx = 2x + 2y dy/dx
or, cos y dy/dx - 2y dy/dx = 2x - cos x
or, dy/dx (cos y - 2y) = 2x - cos x
or, dy/dx = (2x - cos x) / (cos y - 2y)
or, dy/dx = - [(2x - cos x) / (2y - cos y)]
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The set C ={x:x<=-3}
Illustrate the set C' using number line.
The number line of the set C ={x : x ≤ -3} is attached
How to illustration the solution to the inequality?From the question, we have the following parameters that can be used in our computation:
Set C ={x:x<=-3}
Rewrite properly
So, we have
Set C ={x : x ≤ -3}
Remove the curly braces from the set notation
So, we have the following representation
x ≤ -3
There are no multiples and factors to divide or multiply
Also, there are no terms to subtract or add
This means that the inequality to represent on the number line is x ≤ -3
See attachment for the number line
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Please help!!! Mathematics uhhhh.
If the bookstore sells 15 pencils, the ratios of pens to pencil written as fraction is 2 / 3.
How to solve for variables in proportional graph?Proportional relationships are relationships between two variables where their ratios are equivalent.
A proportional relationship is one in which two quantities vary directly with each other.
Therefore, proportional relationship can be represented as follows:
y ∝x
y = kx
where
k = constant of proportionalityx = number of pencilsy = number of pensTherefore,
4 = 6k
k = 4 / 6
k = 2 / 3
Therefore, let's find the number of pen sold when the bookstore sells 15 pencils.
y = 15 × 2 / 3
y = 30 / 3
y = 10
Therefore, if the bookstore sell 15 pencils the ratio of pen to pencil is 10 / 15 = 2 / 3
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while virtually all time series exhibit _______ a random component, not all time series exhibit other components.
In contrast to the fact that almost all time series contain a random component, certain time series do not.
A TIME SERIES IS WHAT?
A time series is a group of observations of clearly defined data points produced over time via repeated measurements. A time series would include, for instance, calculating the amount of retail sales for each month of the year. This is due to the well defined and regular measurement of sales income at uniformly spaced intervals. Time series data are not those that are irregularly or once collected.
Three parts can be separated out of a time series observation: the trend (long-term direction), the seasonal (systematic, calendar-related motions), and the irregular (unsystematic, short term fluctuations).
In mathematics, a time series is a collection of data points that have been indexed chronologically.
A time series is typically a sequence that was recorded at a number of evenly spaced points in time.
It is therefore a set of discrete-time data.
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what is the area of florida rounded to the nearest tenth?
what is the area of south carolina rounded to the nearest ten?
what is the area of georgia rounded to the nearest square mile?
ur not the smartest person
65,760,000
in a class of 240 students 150 learn math and 120 learn English. A.how students learn both subjects. B.how many students learn math only. C. how many students learn English only.
Answer:
240 = 150 + 120 + x
240 = 270 + x
x = 30
150 - 30 = 120 learned math only
120 - 30 = 90 english
30 = both subject
Step-by-step explanation:
heart and star pls <3 brainliest will be appreciated <3(っ◔◡◔)っ -{ elyna s }-The number of students who learn math only is 120 and those who learn both subjects are 30.
What is an expression?
The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that in a class of 240 students 150 learn math and 120 learn English.
The number of students learning both subjects will be,
240 = 150 + 120 + x
240 = 270 + x
x = 30
The number of students learning math only,
150 - 30 = 120 learned math only
120 - 30 = 90 English
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10. Olive Street crosses two parallel railroad tracks, as shown below
Railroad tracks
30°
Answer
What is the measure of Z1? [2 pts]
Show your work.
2
degrees
1
-Olive Street
The measure of angle 1 is given as follows:
m < 1 = 150º.
How to obtain the measure of angle 1?From the image given at the end of the answer, we have that two Railroad tracks are transversal to the Olive Street.
Considering that Olive Street is transversal to the parallel lines, we have that the angle 2 forms a linear pair with the angle of 30º.
Linear pairs are supplementary angles, meaning that the sum of their measures is of 180º, hence the measure of angle 2 is given as follows:
m < 2 + 30º = 180º
m < 2 = 180º - 30º
m < 2 = 150º.
Now we have that angles 1 and 2 are alternate interior angles, as they are between the two parallel lines, on the opposite side of the transversal.
Alternate interior angles are congruent, meaning that the measure of angle 1 is given as follows:
m < 1 = 150º.
Missing InformationThe diagram is given by the image shown at the end of the answer.
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if the slope and a point of a line are given, then the equation of the line can be written in point-slope form. truefalse
The slope and a point of a line are given then the equation of a line can be found. So the answer is true.
The equation of a line:
The equation of a line means an equation in x and y whose solution set is a line in the (x,y) plane. The most popular form in algebra is the "slope-intercept" form. y = mx + b. This in effect uses x as a parameter and writes y as a function of x: y = f(x) = mx+b.
Here we have to get to know if the slope and a point on a line are given then we can find the equation of a line or not.
Let us assume m is the slope of a line and (x1, y1) is the point on a line.
By this, we get the equation:
y- y1 = m( x - x1)
Therefore from the slope and a point on a line, we can find the equation of a line.
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a manufactured lot of buggy whips has 20 items, of which 5 are defective. a random sample of 5 items is chosen to be inspected. find the probability that the same contains exactly one defective item
This indicates that the probability is 0.4402% without replacement.
What is Probability?The ratio of good outcomes to all possible outcomes of an event is known as the probability. The number of positive results for an experiment with 'n' outcomes can be represented by the symbol x.
The probability of an event can be calculated using the following formula.
Probability(Event) = Positive Results/Total Results = x/n
In order to better grasp probability, let's look at a straightforward application.
Let's say we need to forecast if it will rain or not. Either "Yes" or "No" is the appropriate response to this query.
There is a chance that it will rain or not. Here, probability can be used. Using probability, one may forecast the results of a coin toss, a roll of the dice, or a card draw.
According to our question-
n = 5
x = 1
p = 5/20 = 0.25
15C4 = 15! / 4! * 11! = 1365
P = (5C1 * 15C4) / 20C5
Replacing:
P = 5 * 1365/15504
P = 0.4402
Hence, This indicates that the probability is 0.4402% without replacement.
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If f(x)= x³ + 7x²-x and g(x)=x²-3, what is the degree of g(f(x))?
•2
•3
•6
•8
g(x) = x^2 - 3
f(x) = x^3+7x^2-x
Start with the g(x) function. Replace every x with f(x)
g(x) = x^2 - 3
g(f(x)) = ( f(x) )^2 - 3
Then replace the f(x) on the right side with x^3+7x^2-x
g(f(x)) = (x^3+7x^2-x)^2 - 3
The highest term inside the parenthesis is x^3. Squaring this leads to (x^3)^2 = x^(3*2) = x^6
So the highest exponent found in g(f(x)) is 6, meaning the degree of is 6
the mean of a set of numbers is 120. if one number is increased by 300, the mean increases to 135. how many numbers are in the set?
There are 20 numbers in the set.
Given,
Set of numbers is 120
one number is increased by 300
and, mean increases to 135.
To find the how many numbers are in the set?
Now, According to the question:
Let the number of numbers be 'n'
Then, (sum of numbers)/n = 120
or, old sum = 120n
if one number is increased by 300, the new sum = (old sum + 300)
Then, (new sum)/ n= 135
or new sum = 135n = old sum + 300 = 120n + 300
The equation will be:
135n = 120n + 300
15n = 300
n = 20
Hence, There are 20 numbers in the set.
In the question:
The mean of a set of numbers is 120. if one number is increased by 300, the mean increases to 135.
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2. Swee took 3 hours to drive from Nilai to Ipoh at an average speed of 84km/h. In the return journey, he took 30 minutes more than the travelling time from Nilai to Ipoh. Calculate the average speed, km/h, of Swee return journey.
Concept: Proportion, to find the km/h return journer
3 hours to 84 km/hr = 3.5 hours to x km/hr
(since its inverse proportion, multiply the 1st to 2nd and 3rd to 4th)
Inverse proportion: as the other quantities increase, the other one decreases
Solution:3 : 84 = 3.5 : x
3(84) = 3.5x
252 = 3.5x (divide 3.5 both sides)
x = 72
Therefore, Swee took 72 km/hr thats why he took 3 and 30 minutes travelling time.Step-by-step explanation:
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