y = − 1 /8x - 19/4
i think
Identify the range of the function y=-3x+6 when the domain is {-1,2,4}
A. {-6,0,9}
B. {-9}
C. {3,-12,-18}
D. {-3,12}
E. {-6,9}
Answer:
A. {-6,0,9} but in order of domain it's {9,0,-6}
Step-by-step explanation:
There's two ways of finding the range;
Way #1: The traditional method
In the traditional method you substitute x for all the numbers in the domain When substituting you replace x and solve it like a regular equation (so for example for -3(-1) + 6 = 9 so y=9 when x equals to 2 or f(-1)= 9) to find yAfter substituting your y-values or the range (in order from least to greatest in domain or x-values) is {9,0,-6}Way #2: The graphing calculator method
Using a graphing calculator you use the table function Turn on the calculator press the button "Y=" place the function -3x+6 Hit "2nd" then "Graph" to get the tableLook at your x-functions to find your domain and next to these domains are your y-values those y-values that correlate to your domain are the ranges which are {9,0,-6}when 10 candles are sold, the store makes a profit of $7. when 15 candles are sold, the store makes a profit of $12. when 20 candles are sold, the store makes a profit of $17. write an equation to describe the relationship between the profit, y, and the number of candles sold, x.
The equation which describe the relationship between the profit, y, and the number of candles sold, x is x - y = 3.
Given that:-
When 10 candles are sold, the store makes a profit of $7.
When 15 candles are sold, the store makes a profit of $12.
When 20 candles are sold, the store makes a profit of $17.
We have to write an equation which describe the relationship between the profit, y, and the number of candles sold, x.
As we can observe from the given data,
number of candles sold - 3 = profit (in $)
Hence, we can write,
x - 3 = y
x - y = 3.
Where,
x represents the number of candles sold and,
y represents the profit
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shane made a scale drawing of a hotel. a room in the hotel, which is 18 feet wide in real life, is 51 inches wide in the drawing. what is the scale of the drawing?
The scale of the drawing is 6 feet = 17 inches
Scaling is the process of increasing or reducing the size of a figure by a factor k.
In the given statement is:
Shane made a scale drawing of a hotel. a room in the hotel, which is 18 feet wide in real life, is 51 inches wide in the drawing.
A figure which is 18 feet wide in real life, is 51 inches wide in the drawing, hence the scale is:
Now, According to the question is
18 feet = 51 inches
Divide both sides by 3:
6 feet = 17 inches
Therefore, the scale of the drawing is 6 feet = 17 inches
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WORTH 20 POINTS!!!!!!!!! PLEASE HELP SCREENSHOTS ATTACHED DO ALL OF THEM PLEASE
1. The value of x is 14°
2. The value of x is 23°
3. The value of x is 22.5°
Calculating anglesFrom the question, we are to determine the value of x in the given diagrams.
1.
∠ CBA = 180° - 6x (Linear pair theorem)
and
m ∠BAC + m ∠CBA = m ∠FCB (Exterior angle theorem)
Thus,
2x + 180° - 6x = 124°
180° - 4x = 124°
180° - 124° = 4x
56° = 4x
x = 56/4
x = 14°
Hence, the value of x is 14°
2.
m ∠ABE = 4x (Alternate angles theorem)
m ∠ABD + m ∠ABE + m ∠EBF = 180° (Sum of angles on a straight line)
x + 4x + 65° = 180°
x + 4x = 180° - 65°
5x = 115°
x = 115°/5
x = 23°
Hence, the value of x is 23°
3.
m ∠EAB = 2x (Vertical angles theorem)
m ∠AEB = 180° - 4x (Linear pair theorem)
m ∠ABE = 180° - 6x (Linear pair theorem)
m ∠EAB + m ∠AEB + m ∠ABE = 180° (Sum of angles in a triangle)
Thus,
2x + 180° - 4x + 180° - 6x = 180°
180° + 180° - 180° = 6x + 4x -2x
180° = 8x
x = 180°/8
x = 22.5°
Hence, the value of x is 22.5°
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a container with 3 1/2 gallons of weed killer can spray 2 1/4 lawns. how many gallons would it take to spray 2 lawns
To spray on 2 lawns is required [tex]3\frac{1}{9}[/tex] gallons.
Mixed fraction A fraction represented with its quotient and remainder is a mixed fraction. For example, 2 1/3 is a mixed fraction, where 2 is the quotient, 1 is the remainder. So, a mixed fraction is a combination of a whole number and a proper fraction.
Given ;
A container with [tex]3\frac{1}{2}[/tex] gallons of weed killer can spray = [tex]2\frac{1}{4}[/tex] lawans
∵ in [tex]\frac{9}{4}[/tex] lawn the week killer can spray = [tex]\frac{7}{2}[/tex]gallons
∴ in 1 lawn the weed killer is used = [tex]\frac{7}{2}[/tex] × [tex]\frac{4}{9}[/tex] gallon
∴ in 2 lawns the weed killer can spray =[tex]\frac{7}{2}[/tex] × [tex]\frac{4}{9}[/tex]× 2 =[tex]\frac{28}{9}[/tex] gallon =[tex]3\frac{1}{9}[/tex]gallons
[tex]3\frac{1}{9}[/tex] gallons require to spray 2 lawns.
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what is the fraction of 2/4
Answer: 1/2
Step-by-step explanation: 2/4 = 0.5
1/2 = 0.5
10 divided by a 100 is equals to what
Answer:
10/100= 0.1
100/10= 10
Step-by-step explanation:
HELLLPPPPP
45 POINTS!!!!!!
Calculate the percent increase or decrease between the starting and ending quantities below. Round your answer to one decimal place. (There’s 5 questions to answer)
1- Start:3 end: 10
2- start:9 end:20
3-start:100 end: 85
4- start: 45 end:20
5-start: 30 end: 60
1 - there will be increase of 233.33 % , 2 - there will be increase of 122.22 % , 3 - there will be decrease of 15 % , 4 - there will be decrease of 55.56 % , 5 - there will be increase of 100%
WHAT IS PERCENTAGE ?% is a relative number that is used to represent hundredths of any quantity. Since one percent (1%) equals one tenth of something, 100 percent denotes the entire amount, and 200 percent denotes twice the amount mentioned percentage.
CALCULATION1 - Start : 3 end : 10
formula for finding percentage increase is = [tex]\frac{end - start }{start } * 100[/tex]
so substituting value in the formula ;
that is equal to = [tex]\frac{10-3}{3} * 100[/tex]
= [tex]\frac{7}{3} * 100[/tex]
= 233.33% increase
2 - Start : 9 End : 20
directly substituting the values in the above mentioned formula
= [tex]\frac{20-9}{9} * 100[/tex]
= [tex]\frac{11}{9} * 100[/tex]
= 122.22% increase
3 - Start : 100 end : 85
plugging in the values = [tex]\frac{85-100}{100}*100[/tex]
= [tex]\frac{-15}{100} * 100[/tex]
= -15% i.e. decrease of 15%
4 - Start : 45 end : 20
putting in the values = [tex]\frac{20-45}{45} * 100[/tex]
= [tex]\frac{-25}{45}*100[/tex]
= -55.56% i.e. decrease of 55.56 %
5 - Start : 30 end : 60
putting in the values = [tex]\frac{60-30}{30}* 100[/tex]
= [tex]\frac{30}{30} * 100[/tex]
= 100% increase
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hi does anyone know whats this?? Or this?? Thank you for helping.
Answer:
1) [tex]\frac{51}{2}[/tex] 2) [tex]\frac{55}{12}[/tex]
Step-by-step explanation:
Answer: I simplify the answer for u my friened 25.5
Determine the values of y in the equation y2 = 121.
y = ±60.5
y = ±11
y = 60.5
y = 11
Answer:
y = ± 11
Step-by-step explanation:
y² = 121 ( take square root of both sides )
[tex]\sqrt{y^2}[/tex] = ± [tex]\sqrt{121}[/tex]
y = ± 11
a2- 3x -10 please solve this what will be the factor of it
The factors of the equation is (x - 5) (x + 2).
Given the equation is x²-3x-10
we are asked to factorize the equation.
Factorization is the process of identifying two or more expressions whose product is an algebraic expression. It is often referred to as finding the factors of an expression. Finding two or more expressions whose product is the given expression—known as factorization—is the process of breaking down algebraic expressions. A factor is any number that divides the given number by itself without leaving any remainder. It simply implies representing a number as the product of two other integers.
x²-3x-10
x² - 5x + 2x - 10
x(x - 5) + 2(x - 5)
(x - 5) (x + 2)
Thus, the factorization of the given expression x²-3x-10
= (x - 5) (x + 2)
Hence we get the factors as (x - 5) (x + 2)
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Answer:
To factor the quadratic expression a2 - 3x - 10, we need to find two numbers that multiply to give -10 and add to give -3. These numbers are -5 and 2. Therefore, we can write:
a2 - 3x - 10 = (a - 5)(a + 2)
So the factors of the quadratic expression a2 - 3x - 10 are (a - 5) and (a + 2).
Express the number 78.263 using ones, tenths, and thousandths.
The number 78.263 using ones, tenths, and thousandths means
8 = ones2 = tenth3 = thousandthsPlace valueThis is the value of each digits based on its position in a number.
It is divided into whole number part and fractional part.
Whole number part:
Hundred thousandTen thousandThousandHundredTensOnesFractional part:
TenthsHundredthThousandthsTen thousandthsHundred thousandths78.263
3 = thousandths6 = Hundredth2 = tenths. = decimal point8 = Ones7 = tensLearn more about place value:
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Guys i need help
Transform the following rational equation into quadratic equation please help me i need it asap
Answer:
y=
Step-by-step explanation:
NEED HELP ASAP!! PLEASE HELP ME SOLVE THIS AND SHOW YOUR WORK! EXTRA POINTS IF YOU FOLLOW THE INSTRUCTIONS GIVEN.
Hello and Good Morning/Afternoon
Let's take this problem step-by-step:
The sum of all angles in a triangle is equal to 180 degrees:
[tex]\hookrightarrow x + 120 +20 = 180\\\hookrightarrow x + 140 = 180\\\hookrightarrow x =180-140=40[/tex]
∠y and ∠x are on a flat line ⇒ total angle measured between is 180°
[tex]\hookrightarrow x + y = 180\\\hookrightarrow 40 + y = 180\\\hookrightarrow y = 180-40=140[/tex]
Answer: y = 140°
Hope that helps!
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Find a quadratic function that includes the set of values below
(0,8) (2,10) (3,1)
The quadratic function is defined as follows:
- 2 / 3 x² + 7 / 3 x + 8
How to find quadratic function?The quadratic function has the following sets of values below:
(0,8) (2,10) (3,1).
The quadratic function is represented as follows:
f(x) = ax² + bx + c
using (0,8)
8 = a(0)² + b(0) + c
8 = c
Therefore, using (2, 10)(3 , 1).
f(x) = ax² + bx + c
10 = a(2)² + b(2) + 8
10 - 8 = 4a + 2b
2 = 4a + 2b
1 = 2a + b
1 = a(3)² + b(3) + 8
1 = 9a + 3b
Hence, combine the equations,
2a + b = 1
9a + 3b = 1
multiply equation(i) by 3
6a + 3b = 3
9a + 3b = 1
3a = - 2
a = - 2 / 3
Therefore,
9a + 3b = 1
9(- 2 / 3) + 3b = 1
-6 + 3b = 1
3b = 7
b = 7 / 3
Therefore, the quadratic function is defined as follows:
- 2 / 3 x² + 7 / 3 x + 8
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What technique do researchers use to reduce the impact of confounding variables?.
The technique researchers use to reduce the impact of confounding variables is randomization.
What are confounding variables?
Confounding variables are variables that affects or influences both the dependent and independent variable.
Some techniques used to reduce this influence are;
Statistical controlRestriction of valuesRandomizationMatchingThe most effective way of reducing the impact of confounding variables is the conduction of random trials.
Thus, the technique researchers use to reduce the impact of confounding variables is randomization.
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The world's supply of helium is finite. There are approximately 35 billion cubic meters of helium on Earth, and every year humans consume about 210 million cubic meters of it. Let stand for the volume (in millions of cubic meters) of helium remaining, and stand for the number of years since 2018. Which of the following linear equations could model the decreasing supply of helium
The equation which correctly models the decreasing supply of helium as described in the task content is; y = 35 - 0.21x.
Which equation correct models the decreasing supply of helium?It follows from the task content that the equation which correctly models the decreasing supply of helium according to the description is to be determined.
Let, y = amount of helium remaining.
Let x = no of years since 2018.
First, one must convert 210 million to billion cubic feets as follows;
210 million = (210/1000) billion.
= 0.21 billion cubic meters per year.
The number above represents the rate of change of the linear model, otherwise termed the slope.
On this note, since the starting deposit of helium in 2018 was; 35 billion.
This insinuates that the y-coordinate of the y-intercept of the required model is; 35.
Hence, the required decreasing Linear model for the supply of helium is;
y = 35 - 0.21x.
The equation above follows from the slope-intercept form of a linear equation.
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Carly has already written 35 pages of a novel. She plans to write 12 additional pages per month until
she is finished. Write and solve a linear equation to find the total number of pages
months.
at 5
Answer:
f(x) = 12x+35
f(5) = 95 pages written at 5 months
Step-by-step explanation:
Step 1: write the slope intercept equation
f(x) = mx+b
f(x) = the value of the equation at month x
m = slope of the linear equation (pages written PER month)
x = the month
b = intercept of the equation (pages already written)
Step 2: relate given information to the variables
m = 12 pages per month
b = 35 pages already written
Step 3: update equation
f(x) = 12x+35
Step 4: solve for x = 5 months
f(5) = 12(5) + 35 = 60 + 35 = 95
Your friend Alex has won a scholarship to study abroad. (Congratulations!) Alex has only 8 weeks to earn enough money to buy a plane ticket, and he wants to work at an amusement park over the summer to achieve this goal.
Tech intership
Schedule- Part Time (20hours/week)
Wage- 11.50/hour
Amusement park attendant
Schedule- full time (40hours/week)
Wage - 9/hour+ 100 bonus
8 weeks to buy airplane ticket $2200
Please help with the table
The formula for calculating Alex's earnings from his employment at the theme park is 8(40 x 9 + 100) = 8(360 + 100) = 8(460) = $3,680.
Given: that the plane ticket costs $2,200 and that y = 11.5x gives the function that represents the potential earnings Alex may make from the tech internship, the inequality that reflects the maximum number of hours Alex can work at the internship follows.
He puts in 20 hours every week at the internship, which translates to 160 hours of work over the course of 8 weeks.
Given that the internship pays $11.5 an hour for 160 hours, her earnings of 11.5 x 160 = $1,840 will not be sufficient to cover the cost of the plane ticket.
A few of the theme park employment that are available in this sector include costume character work, ride technician, admissions attendant, lifeguard, and gaming attendant. Workers at concession stands must be swift to prevent long queues and receive cash for food and drinks.
Hence, Alex's employment at the internship will not generate enough income to pay for the ticket.
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A basketball player plays 1, 481 minutes the first year of his career, 2, 683 minutes the second year of his career, and 3, 316
minutes the third year of his career. How many minutes has he played in three years
a study concluded that following 7 simple health rules can extend a man's life by 11 years on the average and a woman's life by 7 years. these 7 rules are as follows: no smoking, get regular exercise, use alcohol only in moderation, get 7 to 8 hours of sleep, maintain proper weight, eat breakfast, and do not eat between meals. in how many ways can a person adopt 5 of these rules to follow
There are total 35 such ways in which a person can adopt rules.
What are combinations?Combinations are mathematical operations that count the number of potential configurations for a set of elements when the order of the selection is irrelevant. You can choose the components of combos in any order. Permutations and combinations can be mixed up.
According to the question, we are Given,
Total rules = 7
No of rules a person can adopt = 5
using combinations,
= ⁷C₅
= 7! / 5! (7 - 5)!
= 7! / 5! 2!
= 35
So a person can choose it in 35 possible ways.
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Solve this with steps in standard form.
8y - 12 =3x
Answer:
3x - 8y = -12
Step-by-step explanation:
Standard form is:
[tex]Ax + By = C[/tex]
-------------------------------------------
[tex]8y - 12 = 3x\\\rule{150}{0.5}\\8y - 8y -12 =3x - 8y\\\\-12 = 3x-8y\\\\\boxed{3x - 8y = -12}[/tex]
--------------------------------------------
A graph is attached. Hope this helps!
Evaluate g(x)=x−13 over the domain {2,4,6,8}. What is the range of g(x)?
The range of the function is {-11, -9, -7, -5}.
The given function is g(x)=x−13.
We need to find the range of g(x).
What is the range and domain of the function?The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x). The range of a function is the set of values that the function assumes. This set is the values that the function shoots out after we plug an x value in.
Now, put x=2,4,6,8 in the given function and find the range of function.
So, g(2)=2−13=-11
g(4)=4−13=-9
g(6)=6−13=-7
g(8)=8−13=-5
Therefore, the range of the function is {-11, -9, -7, -5}.
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Josie took a long multiple-choice, end of the year vocabulary test. The ratio of the number of problems Josie got incorrect to the number of problems she got correct is 2:9. If Josie missed 20 questions, how many did she get correct?
Hence she got 90 correct answer.
How many did she get correct?
Ratio of the number of problems she got incorrect to the number of problems she got correct = 2:9
Number of incorrect answers = 8
Let the number of incorrect answers be 2x
Let the number of correct answers be 9x.
So, According to question, we get that
[tex]2x = 20\\ x =\frac{20}{2} \\ x = 10[/tex]
So, the number of correct answers would be
[tex]9x = 9\times 10\\\\ =90[/tex]
Hence she got 90 correct answer.
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Draw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form.
please help me with this 6x^(2)+4x+3*y + 6y + y^(2)
hi
A = 6x^(2)+4x+3*y + 6y + y^(2)
A= 6x²+y²+4x+9y
Please help me with this question!!
The statement that is true about the segment connecting points B and C is D. The segment has a finite length that can be measured.
What is a segment?It should be noted that ieometry, a line segment is the part of a straight line bounded by two distinct end points, and contains every point on the line that is between its endpoints.
It should be noted that the length of a line segment is given by the Euclidean distance between its endpoints.
Therefore, in this case, the statement that is true about the segment connecting points B and C is that the segment has a finite length that can be measured.
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Figure B is a scaled copy of Figure A.
What is the scale factor from Figure A to Figure B?
(Please help)
The points G and H, 19m apart are on the same side of a tree. The angles of elevation of the top T, of the tree from G and H on the horizontal ground with the foot of the tree are 430 and 38° respectively. (1). Illustrate the information in a diagram. (i). Find, correct to one decimal place, the height of the tree.
Using relations in a right triangle, it is found that
The height of the tree is of 91.6 meters.
The graph for this problem is given at the end of the answer.
What are the relations in a right triangle?The relations in a right triangle are given as follows:
The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.From the diagram graphed, we can build two relations involving the tangent of the angles, as follows:
From the smaller right triangle:
tan(43º) = h/x
0.9325 = h/x
x = (1/0.9325)h.
x = 1.0724h (we want to find h, hence we write x as a function of h).
From the larger right triangle:
tan(38º) = h/(x + 19).
tan(38º) = h/(1.0724h + 19).
0.7813 = h/(1.0724h + 19).
Applying cross multiplication:
h = 0.7813(1.0724h + 19).
h = 0.8379h + 14.8447.
0.1621h = 14.8447
h = 14.8447/0.1621
h = 91.6 meters.
The height of the tree is of 91.6 meters.
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Which expression is equivalent to fraction numerator 9 minus 4 i over denominator negative 3 plus 8 i end fraction?
Expression -4/-9 equals fraction numerator 9 minus 4 in math.
Fraction definition:
In mathematics, a fraction is a unit that represents a part or element of a whole. It represents the appropriate parts of the totality. A fraction is made up of two parts: the numerator and the denominator. The number at the top is the numerator, and the number at the bottom is the denominator.It has two negative numbers, hence the result will be the same because of the rule, which is why it is equivalent (minus times minus is equal to zero)
4/9= -4/-9
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