Answer:
the answer is either x= 4 , or it is 9[tex]x^{2} \\[/tex] - [tex]x[/tex] - 10
Step-by-step explanation:
Sorry dude, I'm confused a little bit on what to do, but i think one of these is right.
lmk if you get it right, and which one you used
can you substitute 2x+3y=4 and y=2
Answer: Yes. The answer is -1.
Step-by-step explanation:
2x+3y=4, y=2
Would look like this: 2x+3(2)=4.
1. Multiply 3 x 2 = 6
2) 2x + 6 =4
3) Subtract 6 from both sides
4) Will look like this: 2x = -2
5) -2 / 2 = -1
Answer: -1
Equation: 2x+3(2)=4.
Answer:
x= -1
Step-by-step explanation:
2x + 3y = 4
2x + 3(2) = 4
2x + 6 = 4
2x = 4 - 6
2x = -2
x = -2/2
x = -1
The cost for a hotel rental for 4 nights is $520. How much is the
hotel for 1 night?
$2080 per night
$516 per night
$104 per night
$130 per night
The cost of the hotel for 1 night is $130 using the ratio concept.
What is meant by ratio and proportion?If b is not equal to 0, an ordered pair of real numbers a and b, represented as a / b, is a ratio. An equation that balances two ratios is called a proportion. For illustration, the ratio may be expressed as follows: 1: 3 in the case of 1 male and 3 girls. The formula a: b or a/b can be used to compare any two values.
However, the percentage formula is represented as a:b::c:d or a:b=cd.
There are three types of proportion. They are:
1) Direct Proportion.
2) Inverse Proportion.
3) Compound Proportion.
4) Continued Proportion
Given,
Cost for four rental nights = $520
The cost for one rental night is given by
x = 520/4
x = $130 per night
Therefore, the cost of the hotel for 1 night is $130.
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Could anybody solve this for me?
The equation for S, in terms of t, is S = 18 - 2t
What is a linear equation?
A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The initial value is 18 inches,
The rate of change is -1.5 inches per hour,
t is the number of hours.
S = 18 - 2t
Number of Hours after the Depth of Snow on Hudson's Lawn
Storm (Inches)
0 18
1 16
2 14
3 12
Therefore, the equation for S, in terms of t is S = 18 - 2t.
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HELP ASPPP SHOW UR WORK PLEASE
Answer:
Step-by-step explanation:
y + 8= 2(x-1)
y+8=2x-2
y=2x-10
Slope equals 2
Package a contains 3 birthday cards and 2 thank-you notes and costs $9. 60. Package b contains 8 birthday cards and 6 thank-you notes and costs $26. 60. If x represents the cost of a birthday card and y represents the cost of a thank-you note, how much does each birthday card cost? $1. 33 $1. 50 $2. 20 $3. 10.
Based on the mentioned information, each birthday card costs $2.2.
Forming the equation based on the mentioned variables. The equation will be formed as -
Cost of birthday cards × number of cards + cost of thank-you notes × number of notes = total cost
Equation for package a
3x + 2y = 9.60 : Equation 1
Equation for package b
8x + 6y = 26.60 : Equation 2
Multiplying equation 1 with 3
9x + 6y = 28.8 : Equation 4
Now subtracting equation 2 from equation 4
9x + 6y = 28.8
-8x (-)+ 6y = (-) 26.60
The result will be :
x = 2.2
Thus, the cost of birthday card is $2.2
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A family buys a studio apartment for 150,000. They pay a down payment of $22,500. a)Their down payment is what percent of the purchase price? b) What percent of the purchase price would a $7500 down payment be?
please help!!!
Their down payment of $22,500 is 15% of the purchase price.
A $7500 down payment is 5% of the purchase price.
What is the percentage?A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.
Given, A family buys a studio apartment for 150,000.
They pay a down payment of $22,500.
∴ Their down payment is (22500/150000)×100% of the purchase price which is,
= 15% of the purchase price.
Let x be the percentage of $7500 downpayment in a purchase of 150000.
∴ (x/100)×150000 = 7500.
1500x = 7500.
x = 75/15.
x = 5%
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pleace is my testing
The value of [tex]\sqrt{13}[/tex] is between 3 and 4 on the number line.
What is a number line?A horizontal line with evenly spaced numerical increments is referred to as a number line. How the number on the line can be answered depends on the numbers present. The use of the number is determined by the question that it corresponds to, such as when graphing a point.
[tex]\sqrt{13}[/tex] = 3.60
The value 3.6 is going to be between 3 and 4 because it is seen to be more than 3 while the value is also seen to be less than 4.
Hence the solution to the problem is the locations are 3 and 4.
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A cutomer want to re-carpet a living room and hallway. You charge $5. 99 per quare yard to remove old carpet and $4. 50 per quare yard to intall the new carpet. The carpet and pad they elected are $16. 99 and $3. 00 per quare yard, repectively. The living room i 1712 by 20 feet and the hall i 4 by 12 feet. About how much hould you charge for thi job?
The total charge for this job is $12131.04.
Charge per square yard to remove old carpet = $5.99
Charge per square yard to install the new carpet = $4.50
Charge for carpet and pad they selected per square yard = $16.99 and $3.00
Dimension of the living room = 17 1/2 by 20 feet
⇒ 35/2 by 20 feet
Dimension of the hall = 4 by 12 feet
The living room and the hall is in the shape of rectangular.
The formula of the area of the rectangle is
A= length x width
the total area of the living room and the hall is
⇒ (35/2) x 20 + (4 x 12)
⇒ 398 square feet.
The total cost is
⇒ 5.99 + 4.50 + 16.99 + 3. 00
⇒30.48
Thus, the total charge for this job is
⇒398 x 30.48
⇒$12131.04
Total cost (TC) in that is the overall economic cost of production and is made of variable cost, which varies in step with the amount of a terrific produced and includes inputs together with exertions and raw materials, plus fixed cost, which is unbiased of the quantity of an amazing produced and includes inputs that cannot be various in the brief term including homes and machinery, which include probably sunk prices.
Total cost in economics includes the full possibility price (blessings received from the next-nice alternative) of every issue of production as part of its constant or variable prices.
The additional total cost of one additional unit of manufacturing is known as marginal cost.
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The length of a rectangle is 5 m longer than its width.
If the perimeter of the rectangle is 70 m, find its length and width.
length: m
width: m
Answer:
length: 20m. width: 15m
Step-by-step explanation:
70/2 = 35
35 35
+5 -5
40 30
40/2 30/2
20 15
Choose the best selection for the quadrilateral with vertices at following points: (0,2), (6,0), (0,-2), (-6,0)
The quadrilateral with the given vertices is a Rhombus , the correct option is (C) .
In the question ,
it is given that ,
the vertices of the quadrilateral are (0,2), (6,0), (0,-2), (-6,0)
let us rename , the coordinates as A(0,2) , B(6,0) , C(0,-2) , D(-6,0) .
the distance between two points (x₁,y₁) and (x₂,y₂) can be calculated using the formula
d = √(x₂ - x₁)² + (y₂ - y₁)²
distance between A(0,2) and B(6,0) is
AB = √(6 - 0)² + (0 - 2)²
AB = √(6² + (-2)²)
AB = √(36+4)
AB = √40
distance between B(6,0) and C(0,-2) is
BC = √(0 - 6)² + (-2 - 0)²
BC = √((-6)² + (-2)²)
BC = √(36+4)
BC = √40
distance between C(0,-2) and D(-6,0) is
CD = √(-6 - 0)² + (0 - 2)²
CD = √((-6)² + (-2)²)
CD = √(36+4)
CD = √40
distance between D(-6,0) and A(0,2) is
DA = √(0 -(-6))² + (2 - 0)²
DA = √(6² + 2²)
DA = √(36+4)
DA = √40
we see that the length of all the sides is √40 ,
all the sides are same in Square and Rhombus ,
But from the graph below, we see that the quadrilateral formed is in the shape of the Rhombus .
Therefore , The quadrilateral with the given vertices is a Rhombus .
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How do I find the right degree angle of a triangle?
Answer: You can find a right degree angle of a triangle when it’s a 90 degrees or if you can see it makes like a square.
Davis has $20 in his savings account, and he adds $5 every month. Based on this information, which best shows the relationship between the amount of money Davis has in his savings account, y, and the number of months that have passed, x?
The equation which best shows the relationship between Davis' savings, y and the number of months passed, x is; y = 20 + 5x.
What is the relationship between Davis' savings and the number of months that have passed?It follows from the task content that the equation which represents the relationship between Davis' savings and the number of months passed be determined.
According to the task content;
Davis has $20 in his savings account, and he adds $5 every month.
Let the total amount of savings be; y andLet the number of months passed be; x.Therefore, we have;
y = 20 + 5x
This follows from the fact that the amount added after each month is $5.
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Finding Angle Measures When Parallel Lines Are Cut By a Transversal
Please help i keep asking because i need help and i need to bring my math grade up please help this is urgent!!!!!!!!!!!!
Answer: Angles 6,2,3 are the same and are all 112 degrees.
Angles 1,4,5,8 are the same and are all 68 degrees.
Step-by-step explanation:
Angles 6,2,3 are all 112 degrees because of diagonal angle rule.
Angles 1,4,5,8 are 180-112=68 degrees because we can use 180 degree angle rule.
Hope this helped, If you have any questions or clarifications, comment below!
Please rate!
[Legitimately giving away like, 40 points, & mark brainliest.]
1. The point plotted on graph A is located at (__, __). When using the ratio y/x and changing it to a decimal, that means the constant of proportionality is __ and the equation of the line is y=__.
NOTE!: The rest is basically asking the same question, but different graphs. (ex. The point plotted on graph B is located at (___, __). To be more specific)
Question 5:
Since graph ___ has a different constant of proportionality and different equation, it is different than other three graphs.
[I'd appreciate it if someone were to answer quickly...]
The different proportional relationship is given by:
Relationship B.
The justification is:
Since graph B has a different constant of proportionality and different equation, it is different than other three graphs.
What is a proportional relationship?The definition of a proportional equation is given as follows:
y = kx.
Which means that the output variable y is obtained with the multiplication of the constant of proportionality k and the input variable x.
The constant is obtained as the division of y by x of a point (x,y) different of the origin, as follows:
k = y/x.
Hence, for each relationship, the constant is given as follows:
Relationship A: k = 4/0.8 = 5.Relationship B: k = 55/10 = 5.5. -> different due to the different constant.Relationship C: k = 20/4 = 5.Relationship D: k = 50/10 = 5.More can be learned about proportional relationships at https://brainly.com/question/10424180
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The parent function f(x) = W is translated 8 units left.
reflected across the x-axis, and stretched horizontally by a factor of 3.
The graph's curve "moves to the left/right/up/down," "expands or compresses," or "reflects" when a function is transformed. f(x) = 3x+8
What is meant by function?A function is defined as a relationship between a set of inputs that each have one output. A function is a relationship between inputs in which each input is related to exactly one output. Every function has a domain and a codomain, as well as a range.
The graph's curve "moves to the left/right/up/down," "expands or compresses," or "reflects" when a function is transformed. For example, the graph of the function f(x) = x2 + 3 is generated by simply pushing the graph of the function g(x) = x2 up by 3 units.
Therefore,
f(x) = |x|
y = f(x) + C C < 0 moves it down
y = |x| 8 for shifting down 8
y = f(x + C) C > 0 moves it left
y = Cf(x) C > 1 stretches it in the y-direction
y = 3x+8 to stretch it 2 vertically
y = −f(x) Reflects it about x-axis
y = 3x+8
Hence, The graph's curve "moves to the left/right/up/down," "expands or compresses," or "reflects" when a function is transformed. f(x) = 3x+8
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What fraction is tan 90?
Value of tan90 is 1/0 which is undefined
Let AB, BC, AC be the base(adjascent side), side opposite to θ, hypotenuse of a right angled triangle respectively.
Now as per sine, cosine and tangent formulas, we have here:
Sine θ = Opposite side/Hypotenuse = BC/ACCos θ = Adjacent side/Hypotenuse = AB/ACTan θ = Opposite side/Adjacent side = BC/ABIt is seen from these formulaes that
Tan θ = sin θ/cos θNow, other formulas for trigonometry ratios are:
Cot θ = 1/tan θ = Adjacent side/ Side opposite = AB/BCSec θ = 1/Cos θ = Hypotenuse / Adjacent side = AC / ABCosec θ = 1/Sin θ = Hypotenuse / Side opposite = AC / BCThe other way of representing trigonometric values formulas are:
Tan θ = sin θ/cos θCot θ = cos θ/sin θSin θ = tan θ/sec θCos θ = sin θ/tan θSec θ = tan θ/sin θCosec θ = sec θ/tan θTherefore, value of tan90 is undefined.
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The fraction value of tan90° after using trigonometric value is 1/0 that is undefined.
What is trigonometric ratio?
There are six trigonometric ratios used in trigonometry: sine, cosine, tangent, secant, and cotangent. The abbreviations for these ratios are sin, cos, tan, sec, cosec(or csc), and cot. Look at the below-displayed right-angled triangle. Any two of the three sides of a right-angled triangle can be compared in terms of their relative angles using trigonometric ratios.
Here the given
=> tan 90°
Tan 90 degrees in radians is written as
=>tan (90° × π/180°)
=> 1/0 = undefined.
Hence the fraction value of tan 90° is 1/0 that is undefined.
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What interpretation can be made from the y-intercept
How can the point on the graph above be interpreted?
What is the output value of this graph when the input value is 4
The interpretation of the y-intercept is that the sales made in Year 2 is 20 million
How to interpret the y-intercept of the graph?
A graph y-axis and x-axis. The y-axis is the vertical axis while x-axis is the horizontal axis. In this case, the y-axis is the Sales and the x-axis is the Year
The y-intercept is the point where the graph touches the y-axis. In this case, the y-intercept is 20. If you trace to the x-axis (Year), the value there is 2. The interpretation is that the sales made in Year 2 is 20 million
The point can be interpreted as the sales made in Year 8 is 40 million
The output value of this graph when the input value is 4 i.e. Year 4. The output value is the sales made in Year 4 which is 30 million (it is approximately halfway between 20 and 40)
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Help my with this problem please 23 points
Answer:
4x² +4x -20
Step-by-step explanation:
You want the difference between 6x² -5x -12 and 2x² -9x +8.
DifferenceThe difference is found by subtraction. This is the same as adding the opposite.
(6x² -5x -12) - (2x² -9x +8)
= 6x² -5x -12 -2x² +9x -8
= (6 -2)x² +(-5 +9)x +(-12 -8)
= 4x² +4x -20
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Is r=5 a solution to the inequality below? r<11
Yes, r=5 is a solution of inequality r<11.
Given the inequality is r<11
Given the value of r is, r=5
Since 5<11
So yes r=5 is the solution of the inequality r<11.
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explain how to change from exponential form to simplified form!!!
(k12 checkpoint 2 part 2 interim)
Answer: When you are simplifying exponential terms raised to another exponent, the way to simplify them is to multiply the exponents together.
Step-by-step explanation:
25pts. URGENT: What is the classification of each system?
Drag the answers into the boxes to match each system.
It is found that the first system of equations is consistently independent, the second one is inconsistent, and the third one is consistently dependent.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
We are given the first system of equations:
4x + y = 8
x + 3y = 8
thus 4/1 ≠ 1/3 = 1 is consistently independent.
The second system of the equation is;
-4x + 6y = 2
2x - 3y = 1
Therefore, -4/2 = -6/3 = 2 is inconsistent.
The third system of equations is;
5x - 2y = 4
5x - 2y = 6
Thus, 5/5 = -2/-2 ≠ 4/6 is consistent dependent.
Thus, It is found that the first system of equations is consistently independent, the second one is inconsistent, and the third one is consistently dependent.
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Given the function defined in the table below, find the average rate of change, in
simplest form, of the function over the interval 4 ≤x≤7.
x
1
4
7
10
f(x)
90
87
84
81
The average rate of change of the function over the range 4≤ x ≤7 using the function defined in the table is -1.
Given that,
We have to find the Find the average rate of change of the function over the range 4≤ x ≤7 using the function defined in the table below.
x f(x)
1 90
4 87
7 84
10 81
We have to find the slope of the 2 points.
The points are (4,87) and (7,84)
The slope point is rise/run
Rise is y₂-y₁
Run is x₂-x₁
So,
Slope = (84-87)/(7-4)
Slope = (-3)/(3)
Slope = -1
Therefore, The average rate of change of the function over the range 4≤ x ≤7 using the function defined in the table is -1.
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find an equation for the line that passes through the points (-6,-5) and (6,4)
[tex](\stackrel{x_1}{-6}~,~\stackrel{y_1}{-5})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{4}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{4}-\stackrel{y1}{(-5)}}}{\underset{run} {\underset{x_2}{6}-\underset{x_1}{(-6)}}} \implies \cfrac{4 +5}{6 +6} \implies \cfrac{ 9 }{ 12 } \implies \cfrac{3 }{ 4 }[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-5)}=\stackrel{m}{ \cfrac{3 }{ 4 }}(x-\stackrel{x_1}{(-6)}) \implies y +5 = \cfrac{3 }{ 4 } ( x +6) \\\\\\ y+5=\cfrac{3 }{ 4 }x+\cfrac{9}{2}\implies y=\cfrac{3 }{ 4 }x+\cfrac{9}{2}-5\implies {\Large \begin{array}{llll} y=\cfrac{3 }{ 4 }x-\cfrac{1}{2} \end{array}}[/tex]
Answer:
[tex]\displaystyle \boxed{ y=\frac{3}{4}x-\frac{1}{2} }[/tex]
Step-by-step explanation:
First, we will find the slope. This is done by finding the change in y over the change in x.
[tex]\displaystyle \frac{y_{2} -y_{1} }{x_{2} -x_{1} }= \frac{4--5}{6--6} =\frac{4+5}{6+6}=\frac{9}{12}=\frac{3}{4}[/tex]
Next, we will find the equation. We will create a point-slope equation and simplify into slope-intercept form.
y - 4 = [tex]\frac{3}{4}[/tex](x - 6)
y = [tex]\frac{3}{4}[/tex]x - [tex]\frac{9}{2}[/tex] + 4
y = [tex]\frac{3}{4}[/tex]x - [tex]\frac{1}{2}[/tex]
How to isolate Y when y - 3 = 2/5 (x+4) is the problem
Explanation:
To isolate the Y from y - 3 = 2/5 (x+4), you need to add 3 from both sides to move it to the right side of the equation:
y - 3 = 2/5 (x+4)
+3 +3
y = 2/5 (x+4) + 3
Answer:
add 3 to both sides
or move 3 across the equal sign, which will change its sign from - to +
= y = 2x + 8 / 5 +
Explain how you can tell if the data in a table is a function
use the words input and output in your response
please if you don't know this font look it up and copy the and past it they will look it up and see if you copied and pasted it
Answer:
Okay, sorry for answering a few minutes late!
Step-by-step explanation:
So, for data in a table to be a function, the input must only have one output.
Short and sweet answer, hope this helps!
An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 3500 feet and Plane B is at an altitude of 1970 feet. Plane A is gaining altitude
at 40.25 feet per second and Plane B is gaining altitude at 65.75 feet per second.
How many seconds will pass before the planes are at the same altitude
What will their height be when they’re at the same altitude
60 seconds long will it take for the planes to reach the same altitude.
Given that,
Two planes are being monitored by an air traffic controller. Plane A is initially at an altitude of 3500 feet, while Plane B is initially at a height of 1970 feet. The altitude of Plane A is increasing at a rate of 40.25 feet per second, while Plane B is doing so at a rate of 65.75 feet per second.
We have to find how long will it take for the planes to reach the same altitude.
Let us take x as the number of seconds in time.
We get,
3500+40.25x for Plan A.
1970+65.75x for Plan B.
Take,
3500+40.25x=1970+65.75x
3500-1970=65.75x-40.25x
1530=25.5x
x=1530/25.5
x=60
Therefore, 60 seconds long will it take for the planes to reach the same altitude.
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if evan does a job in 11 hours and with the help of himari they can do it together in 6 hours, how long would it take himari to do it alone?
Using World problem : work and time,
Himari will take 13 hour and 12 minutes to complete the job alone.
We have given that
Time taken by Even to do a job = 11 hours
let "x hours" be the time taken by humari to do this job alone .
Even'rate to do a job = 1/11 per hour
Himari and Even work together and do the job in 6 hours .
rate at which both are working together and do the job = 1/6 per hour.
Himari' rate to do job = 1/x hours per day
Now , using the formula "together work "
Even'rate + Himari'rate = rate of together work
=> 1/11 + 1/x = 1/6
we solve the above equation and find out the value of x
multiple both sides with 66x we get,
=> 6x + 66 = 11x
=> 5x = 66
=> x = 66/5 = 13 hours and 12 minute
Hence, Himari will take 13 hour and 12 minutes to do job alone .
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Which equations represent circles that have a diameter of 12 units and a center that lies on the y-axis? Select two options. x2 + (y – 3)2 = 36 x2 + (y – 5)2 = 6 (x – 4)² + y² = 36 (x + 6)² + y² = 144 x2 + (y + 8)2 = 36
x² + (y – 3)² = 36 and x² + (y + 8)² = 36 are equations that represent circles having a diameter of 12 units and a center that lies on the y-axis
How to find the equations of circles?Given : x² + (y – 3)² = 36, x² + (y – 5)²= 6, (x – 4)² + y² = 36, (x + 6)² + y² = 144 and x² + (y + 8)² = 36
and x² + (y + 8)² = 36
The standard form of the equation of a circle is
(x-a)² + (y-b)² = r²
where (a, b) is the center and r is the radius
Let's compare the given equations with the standard equation:
x² + (y – 3)² = 36 can be written as:
(x-0)² + (y – 3)² = 6²
This has a center (0, 3), radius r = 6 and diameter = 12 units
x² + (y – 5)²= 6 can be written as:
(x-0)² + (y – 5)² = (√6)²
This has a center (0, 5), radius r = √6 and diameter = 2√6 units
(x – 4)² + y² = 36 can be written as:
(x-4)² + (y – 0)² = 6²
This has a center (4, 0), radius r = 6 and diameter = 12 units
(x + 6)² + y² = 144 can be written as:
(x+6)² + (y – 0)² = 12²
This has a center (6, 0), radius r = 12 and diameter = 24 units
x² + (y + 8)² = 36 can be written as:
(x+0)² + (y + 8)² = 6²
This has a center (0, -8), radius r = 6 and diameter = 12 units
Therefore, the equations that represent circles that have a diameter of 12 units and a center that lies on the y-axis are x² + (y – 3)² = 36 and x² + (y + 8)² = 36
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Timberlee buys 4 shirts for $31 and Riley buys 7 shirts for $54.25. What is the constant of proportionality? Express your answer in decimal form.
4 shirts ∝ 31
4 = 31k
7 shirts ∝ 54.25
7 = 54.25k
Where k is the constant of proportionality
The constant of proportionality is k = 0.13.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
We have,
Timberlee buys 4 shirts for $31 and Riley buys 7 shirts for $54.25.
In proportionality terms, we can write as,
4 shirts ∝ 31 _____(1)
7 shirts ∝ 54.25 _____(2)
(1) can be written as,
4 shirts = 31K
7 shirts = 54.24k
Where k is the constant of proportionality.
Now,
The value of k.
From (1)
4 = 31k
k = 4/31
k = 0.13
From (2)
7 = 54.24k
k = 7/54.24
k = 0.13
Thus,
The constant of proportionality is k = 0.13.
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Geometry Question help?
Measure of all angles must equal 180 degrees.
Therefore,
(4x+20) + (2x+34) + x = 180
6x + 54 + x = 180
7x + 54 = 180
7x = 126
x = 18
4(18)+20 = 92
Angle A = 92
2(18)+34 = 60
Angle C = 60 degrees
Unknown angle is 18 degrees because the "x" represents the third angle.