I need help with this question.
Please Help Me!!! (15 points)
Answer:
Step-by-step explanation:
y = 5x + 1
Table for input-output values is,
x 0 1 2 3
y 1 6 11 16
Now we can plot these points to get the graph.
y = x + 2
Table for the Input-output values,
x 0 1 2 3
y 2 3 4 5
We can get the graph as attached.
What’s the answer to x/2-12= -14
Answer:
x = -4
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
x /2 −12=−14
1 /2 x+−12=−14
1/ 2 x−12=−14
Step 2: Add 12 to both sides.
1 /2 x−12+12=−14+12
1 /2 x=−2
Step 3: Multiply both sides by 2.
2*( 1 2 x)=(2)*(−2)
x = −4
Answer:
-1
Step-by-step explanation:
step 1: X/2-12=-14
step2 : X/2=-14+12
step3 : X/2=-2
step4 : X=-2/2
step5 : X=-1
Replacement glass for energy-efficient windows costs $5.00 per square foot. About how much will you pay for replacement glass for a regular hexagonal window with a radius of 2 feet?
A. $10.39
B. $27.78
C. $45.98
D. $51.96
Answer:
Cost = $51.96
Step-by-step explanation:
The radius of a regular hexagonal window, r = 2 feet
The area of a hexagonal shaped figure is given by :
\(A=\dfrac{3\sqrt3}{2}r^2\)
Put r = 2 feet in above formula
\(A=\dfrac{3\sqrt3}{2}\times (2)^2\\\\A=10.392\ \text{unit}^2\)
Replacement glass for energy-efficient windows costs $5.00 per square foot. It means, the total cost will be :
\(A=10.392\times 5\\\\A=\$51.96\)
So, the required cost will be $51.96. Hence, the correct option is (d).
Find the volume of a hemisphere that has a diameter of 26 inches. Leave your answer in notatioType 'pi' to represent Pi
The formula for finding the volume a hemisphere is given by
\(V_{\text{hemisphere}}=\frac{2}{3}\pi r^3\)Given the diameter of 26inches, the radius would be
\(\begin{gathered} \text{radius,r}=\text{diameter,d}\frac{diameter,d}{2}=\frac{26inches}{2} \\ r=13\text{inches} \end{gathered}\)Substituting for r in the volume of a hemisphere will give
\(\begin{gathered} V_{\text{hemisphere}}=\frac{2}{3}\times\pi\times13^3 \\ =\frac{2}{3}\times2197\pi\text{ cubic inches} \\ =1464.67\pi\text{ cubic inches} \end{gathered}\)Hence, the volume of the hemisphere is 1464pi cubic inches
A square has a side length of 7 cm. A rectangle has a length of y/8-3cm and a width of 4 cm. The square has the same perimeter as the rectangle. Work out the value of y.
if the square has the same perimeter as the rectangle then the value of y is 92.
How to find the value of y?The perimeter of a square is equal to the sum of all four sides, so a square with a side of 7 cm has a perimeter of 4 * 7 cm = 28 cm.
The perimeter of the rectangle is equal to twice the sum of the length and width. So for a rectangle of length y/8-3cm and width 4cm, the perimeter is 2 * (y/8-3+4) cm = (y/4-3+8) cm = y/4 . +5 cm.
Since squares and rectangles have the same perimeter, the two perimeter formulas can be equal.
28cm = y/4+5cm
You can solve for y by isolating it on one side of the equation.
years/4+5 = 28
y/4 = 23
y=92
So the value of y is 92.
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Determine the measure of the third angle in a triangle when the other two angles total 165 degrees.
Answer:
15
Step-by-step explanation:
180-15
Hello!
the sum of the angles in the triangle = 180°
so the 3rd angle = 180° - 165° = 15°
The answer is 15°What is the solution to this system of equations? 4x + 5y = 7
3x – 2y =-12
The solution is
(-2, 3)
(3.-1)
(18. -9)
(13,-9)
Answer:
(-2, 3)
Step-by-step explanation:
4x + 5y = 7
3x - 2y = -12
Let's solve this by elimination. We want to eliminate one variable at a time. This means we need to multiply the equations to create a common multiple to cancel out a variable.
Let's work with y.
5y and -2y: For these values to cancel out, we need to multiply each term to create a common multiple.
2(4x + 5y = 7)
5(3x - 2y = -12)
Multiply.
8x + 10y = 14
15x - 10y = -60
Eliminate.
23x = -46
Divide both sides by 23.
x = -2
Now that we know x, let's plug it back into one of equations to find y.
4x + 5y = 7
4(-2) + 5y = 7
Multiply.
-8 + 5y = 7
Add.
5y = 15
Divide.
y = 3
Now we know x and y; let's plug both back into the equation we have not checked yet.
3x - 2y = -12
3(-2) - 2(3) = -12
Multiply.
-6 - 6 = -12
Subtract.
-12 = -12
Your solution is correct.
(-2, 3)
Hope this helps!
A firm makes circular drink mats , of radius 4.5cm , that are 3mm thick. they want to produce a rectangular box to hold a pile of 12 mats. what are the minium dimensions of the box.
The minimum dimensions of the rectangular box is 90mm by 90mm by 36mm when converted to millimeter
Dimensions of a rectangular boxThere are three dimensions of a rectangular box which are the length, width, and height . The three measurements are multiplied together using Length × Width × Height in the same units.
The radius of the circular mat = 4.5cm and 45{converted to millimeter}
the total length of the mat = 2 × 45mm {2radius = diameter}
the total length of the mat = 90mm
Since the length of the circular mat is the same around the mat, hence the rectangular box has two dimensions of length of 90mm and width of 90mm
The total thickness of the 12 mats will determine the height of the rectangular box so;
the thickness of a mat is given as 3mm
total thickness of 12 mats = 3mm × 12
total thickness of 12 mats = 36mm
Therefore, the rectangular box will have a minimum dimension of length 90mm by width 90mm by height 36mm
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4. Stanley quilts a square rug that has an area of 400 square inches. What is the length of each side of the
rug?
A. 14 inches
B. 16 inches
C. 18 inches
D. 20 inches
Answer:
D. 20 inches
Step-by-step explanation:
Area = length * width
20 * 20 = 400 square inches
20 inches
Help me please fast it’s due 8pm!
Answer:
addition property of equality
Step-by-step explanation:
you are adding 1 to the other side!
If your base pay is 10000 your commission rate is 40% you sell 15 cars and you earn 40000 how much does each car cost
Answer: $4,000
Step-by-step explanation:
If the total earnings were $40,000 and the base pay was $10,000, then the commission earned would be $40,000 - $10,000 = $30,000.
Since the commission rate is 40%, we can set up the equation:
40% x Total Sales = Commission Earned
We know that the commission earned is $30,000, and we also know that 15 cars were sold. Therefore, we can solve for the average price of each car:
40% x Total Sales = Commission Earned
40% x (15 x Price per Car) = $30,000
6 x Price per Car = $30,000
Price per Car = $5,000
However, this is just the average price per car. Since the commission is based on the total sales, we need to calculate the actual commission earned on each car:
Commission per Car = 40% x Price per Car
Commission per Car = 40% x $5,000
Commission per Car = $2,000
Therefore, the total earnings of $40,000 divided by the number of cars sold (15) gives the amount earned per car:
Amount earned per Car = Total Earnings / Number of Cars Sold
Amount earned per Car = $40,000 / 15
Amount earned per Car = $4,000
Which are correct representations of the inequality –3(2x – 5) < 5(2 – x)? Select two options. x < 5 –6x – 5 < 10 – x –6x + 15 < 10 – 5x A number line from negative 3 to 3 in increments of 1. An open circle is at 5 and a bold line starts at 5 and is pointing to the right. A number line from negative 3 to 3 in increments of 1. An open circle is at negative 5 and a bold line starts at negative 5 and is pointing to the left.
An open circle at 5 and a bold line starting at 5 and pointing to the right (>) is the correct representations of the inequality
How to identify the correct representations of the inequality?An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value e.g 5 < 6, x ≥ 2, etc.
Given: the inequality –3(2x – 5) < 5(2 – x)
First, we have to solve for x in the inequality
–3(2x – 5) < 5(2 – x)
Clear the parenthesis:
-6x + 15 < 10 - 5x
Collect like terms:
-6x + 5x < 10 - 15
-x < -5
Divide both sides by -1:
x > 5 ( Note: Dividing both sides by -1 will change the < to > )
This is what will determine our answer
Since our answer is x > 5. An open circle will be at 5 and a bold line starts at 5 and is pointing to the right (>)
Therefore, the correct representations of the inequality is an open circle is at 5 and a bold line starts at 5 and is pointing to the right
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Mr. Smith and Mr. Stein were driving to a business meeting 140 miles from their office. Mr. Smith drove the first
miles, then Mr. Stein drove the rest of the way.
Write an algebraic expression for how many miles Mr. Stein drove
This represents the distance that Mr. Stein drove, given that Mr. Smith drove x miles. The value of x must be between 0 and 140, since Mr. Smith cannot drive more than 140 miles and less than 0 miles.
How to determine the algebraic expression?An algebraic expression is a combination of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. It can be simplified, evaluated, or manipulated using algebraic rules and properties.
Let x be the number of miles Mr. Smith drove. Then, the number of miles Mr. Stein drove is \(140 - x\) , since they drove a total of 140 miles and Mr. Smith already drove x miles.
the algebraic expression for how many miles Mr. Stein drove is:
\(140 - x\)
Therefore, This represents the distance that Mr. Stein drove, given that Mr. Smith drove x miles. The value of x must be between 0 and 140, since Mr. Smith cannot drive more than 140 miles and less than 0 miles.
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Hold on hold on hold on hold on hold on oh my God if seven is an element in the domain of F parentheses X parentheses equals 6X -19 over five what is the corresponding element in the range
The corresponding element in the range of the function F when 7 is in the domain is 4.6.
The expression for the given function F following as:
F(x) = 6(x) - 19 / 5
The corresponding element in the range of the function F is the output of the function when 7 is input into the function.
To find this output, we can substitute 7 for X in the expression for the function F:
F(7) = 6(7) - 19 / 5
F(7) = 42 - 19 / 5
F(7) = 23 / 5
F(7) = 4.6
Thus, when 7 is in the domain, the equivalent element in the range of the function F is 4.6.
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find volume of this figure . round to the nearest hundredth and use 3.14 for pie
ANSWER:
2034.72 cubic units
STEP-BY-STEP EXPLANATION:
The volume of the cylinder is given by the following equation;
\(V=\pi\cdot r^2\cdot h\)The radius is equal to 6 and the height is equal to 18, let's substitute them and calculate the volume of the shown cylinder, like this:
\(\begin{gathered} V=3.14\cdot(6)^2^\cdot(18) \\ \\ V=3.14\cdot36\cdot18 \\ \\ V=2034.72 \end{gathered}\)The volume of cylinder is equal to 2034.72 cubic units
Y’all got on Brainly quick it’s only Wednesday
Answer:
some ppl got summer school
Step-by-step explanation:
The spring sale at a local store advertises one price for all items in a particular department. You buy 5 small pots and q packages of seeds for 3 dollars each. An expression for the total cost of your purchases is 3(5+q). Use the Distributive Property to write an expression equivalent to 3(5+q).
Answer:
3*(5 + q) = 15 + 3*q
Step-by-step explanation:
The distributive property is:
A*(B + C) = A*B + A*C
We know that you buy 5 small pots and q packages of seeds for $3 each.
And we know that the equation that models the cost is:
3*(5 + q)
Now we can simply apply the distributive property to rewrite this expression as:
3*(5 + q) = 3*5 + 3*q = 15 + 3*q
So the equivalent expression is: 15 + 3*q
9. Use the graph of the function f(x) = x³ – 7x² + 10x to
x`
identify its relative maximum and minimum.
da
-4
8
8
2
K
T
2
da
y
8
+w
8
maximum = 4.1, minimum = -8.2
maximum = 0.9, minimum = 3.8
The extremas of the function f(x) = x³ - 7x² + 10x are given as follows:
Relative maximum: (0.88, 4.061).Relative minimum: (3.786, -8.209).What are the relative minimums and the relative maximums of a function?The relative minimums of a function are given by the points in which the function's behavior changes from decreasing to increasing, that is, where the function curves down.The relative maximums of a function, meanwhile, are given by the points in which the function's behavior changes from increasing to decreasing, that is, where the function curves up.More can be learned about extremas of a function at https://brainly.com/question/9839310
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The histogram shows the result of a survey about the number of hours students watch television on the weekend.
How many students participated in the survey?
The number of students who participated in the survey, based on the histogram showing the number of hours students watch television on the weekend, is 125.
What is a histogram?A histogram is a pictorial or graphical representation of categorical data, proportional to the frequency of a variable and whose width is equal to the class interval.
The number of students who watched between 0 - 4 hours = 20
The number of students who watched between 5 - 9 hours = 40
The number of students who watched between 10 - 14 hours = 30
The number of students who watched between 15 - 19 hours = 20
The number of students who watched between 20 - 24 hours = 15
The total number of students who participated = 125
Thus, using the histogram, the total number of students who participated in the survey was 125.
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You are baking chocolate chip cookies. The recipe asks for 3 3/4 cups of flour and you want to make 2 times the original recipe.
A. 1 1/2 cups
B. 30/4 cups
C. 7 2/4 cups
D. 7 1/2 cups
Fill in the table using this function rule y=27-4x
Step 1: Y= 27 - 4x
To find X - intercept / zero, substitute Y = 0
0 = 27 - 4x
Step 2: 0 = 27 - 4x
Move variable to the left-hand side and change it's sign.
4x = 27
Step 3: 4x = 27
divide both sides of the equation by 4
X = 27/4
solution: X = 27/4
Alternate form: X = 6 3/4, X = 6.75
A pair of dice is rolled. What is the probability that both dice will land on 6?
1/6
1/12
1/36
1/18
Answer:
1/36
Step-by-step explanation:
There is a 1/6 probability the first die will be a 6
There is a 1/6 probability the second die will be a 6
There is a (1/6 * 1/6) = 1/36 probability that both will be a 6
Given y = sin(2x - π) + 1, find the (a) derivative, (b) equation of the tangent line at x = π/2, (c) equation of the normal line at x = π/2.
Answer:
(a) \(y'= 2cos(2x - \pi)\)
(b) \(y=2x - \pi + 1\)
(c) \(y=-\frac{x}{2} +\frac{\pi + 4}{4}\)
Step-by-step explanation:
\(y=sin(2x-\pi)+1\)
Part (a)Find the derivative of this function by using the chain rule and the power rule.
We know that the derivative of sinx = cosx. Find the derivative of this entire function first, \(sin(2x-\pi)+1\), then multiply this by the derivative of the inside function, \(2x-\pi\).
\(\frac{d}{dx}(sin(2x-\pi)+1)\)Use the chain rule to find the derivative of sin(2x - π) + 1, which is cos(2x - π), then multiply this by the derivative of (2x - π). The derivative of π is 0, because it is a constant. The derivative of 2x is 2 based on the Power Rule.
\(cos(2x-\pi) \times 2\)Simplify this expression.
\(2cos(2x - \pi)\)This is the derivative of \(y=sin(2x-\pi)+1\); therefore, we can write:
\(y'= 2cos(2x - \pi)\) Part (b)In order to find the equation of the tangent line at \(x=\frac{\pi}{2}\), we will need to find the slope of the tangent line and the x- and y- coordinates (we already know the x- cord).
The steps to finding the equation of the tangent line at a certain are:
Plug into y' to find the slope of the tangent line.Plug into y to find the (x, y) coordinates.Use point-slope to write our equation in slope-intercept form.We know that y' = 2cos(2x - π). Let's plug x = π/2 into this equation for x to find the slope of the tangent line.
\(y'(\frac{\pi}{2} ) = 2cos(2(\frac{\pi}{2})-\pi)\)Simplify inside the parentheses.
\(y'(\frac{\pi}{2} ) = 2cos(\frac{2\pi}{2}-\pi)\) \(y'(\frac{\pi}{2} ) = 2cos(\pi - \pi)\) \(y'(\frac{\pi}{2} ) = 2cos(0)\) \(y'(\frac{\pi}{2} ) = 2\)Now we know that the slope of the tangent line is 2.
Let's plug x = π/2 into the original function, y.
\(y(\frac{\pi}{2})=sin(2(\frac{\pi}{2})-\pi)+1\)Simplify inside the parentheses.
\(y(\frac{\pi}{2})=sin(0)+1\) \(y(\frac{\pi}{2})= 0+1\) \(y(\frac{\pi}{2})=1\)This tells us that the y-value, when x = π/2, equals 1. Our coordinates that we can use are (π/2, 1).
Now we can use point-slope form to write an equation for the tangent line to y at x = π/2.
Point-slope equation:
\(y-y_1=m(x-x_1)\)We have \((x_1, \ y_1)\), which are the x- and y- coordinates, and \(m\), which is the slope of the tangent line.
Substitute these values into the equation:
\(y-(1)=2(x-(\frac{\pi}{2}))\)Distribute 2 inside the parentheses.
\(y-1=2x-\frac{2 \pi}{2}\)Add 1 to both sides of the equation.
\(y=2x-\frac{2\pi}{2} + 1\) \(y=2x - \pi + 1\)This is the equation of the tangent line of \(y=sin(2x-\pi)+1\) at \(x=\frac{\pi}{2}\).
Part (c)In order to find the equation of the normal line at x = π/2, we can use the information that the tangent line is perpendicular to the normal line.
This information is helpful because this means that their slopes are opposite reciprocals.
Let's use the point-slope equation again, but instead of m = 2, m will be the opposite reciprocal of 2 ⇒ -1/2. We will still use the same coordinate points.
\(m=-\frac{1}{2} \ \ \ \ \ \ (\frac{\pi}{2}, \ 1)\) \(y-(1) = -\frac{1}{2}(x - (\frac{\pi}{2} ))\)Distribute -1/2 inside the parentheses.
\(y-1=-\frac{1}{2}x + \frac{\pi}{4}\)Add 1 to both sides of the equation.
\(y=-\frac{1}{2}x + \frac{\pi}{4}+1\) \(y=-\frac{1}{2}x + \frac{\pi}{4} + \frac{4}{4}\) \(y=-\frac{1}{2}x + \frac{\pi+4}{4}\)You can leave it written as this, or write it as:
\(y=-\frac{x}{2} +\frac{\pi + 4}{4}\)This is the equation of the normal line of \(y=sin(2x-\pi)+1\) at \(x=\frac{\pi}{2}\).
Find the volume of a cone with a height of
9in and a diameter of 12in.
Answer:
339.12 in³
Step-by-step explanation:
volume of cone: v = Bh/3 = πr²h/3
v = (3.14 * (12/2)² * 9 )/ 3 = 339.12
2.38 Baggage fees: An airline charges the following baggage fees: $25 for the first bag and $30 for the second. Suppose 54% of passengers have no checked luggage, 30% have only one piece of checked luggage and 16% have two pieces. We suppose a negligible portion of people check more than two bags.
The average baggage-related revenue per passenger is $16.30 per passenger.
Expected valueExpected value formula: x×p(x)
First step
No passenger=0×.54
No passenger=0
Second step
One checked luggage for first bag=.30×$25
One checked luggage for first bag=$7.50
Third step
Two piece for the first and second bag=.16×($25+$30)
Two piece for the first and second bag=.16×$55
Two piece for the first and second bag=$8.80
Last step
Expected value=$7.50+$8.80
Expected value=$16.30
Therefore the average baggage-related revenue per passenger is $16.30 per passenger.
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How many cabinets must he sell to break even?
Answer: He must sell 7 cabinets.
Step-by-step explanation:
So it gives us the equations y= 400x + 1400 and the equations y=600x and to find the break even point we need to set the two equations equal each other to solve for x.
400x + 1400 = 600x
-400x -400x
1400 = 200x
x = 7
Please help explanation if possible
I don't completely know but if every nine years the 2,000 doubles then in 54 years it would have doubled six times so it would look something like this
2,000^6 so I hope that helps at all
Find the slope of the tangent line to the curve defined by 4x2+5xy+y4=370
at the point (−9,−1)
Answer:
The slope of the tangent line to the curve at the given point is -11/7.
Step-by-step explanation:
Differentiation is an algebraic process that finds the gradient (slope) of a curve. At a point, the gradient of a curve is the same as the gradient of the tangent line to the curve at that point.
Given function:
\(4x^2+5xy+y^4=370\)
To differentiate an equation that contains a mixture of x and y terms, use implicit differentiation.
Begin by placing d/dx in front of each term of the equation:
\(\dfrac{\text{d}}{\text{d}x}4x^2+\dfrac{\text{d}}{\text{d}x}5xy+\dfrac{\text{d}}{\text{d}x}y^4=\dfrac{\text{d}}{\text{d}x}370\)
Differentiate the terms in x only (and constant terms):
\(\implies 8x+\dfrac{\text{d}}{\text{d}x}5xy+\dfrac{\text{d}}{\text{d}x}y^4=0\)
Use the chain rule to differentiate terms in y only. In practice, this means differentiate with respect to y, and place dy/dx at the end:
\(\implies 8x+\dfrac{\text{d}}{\text{d}x}5xy+4y^3\dfrac{\text{d}y}{\text{d}x}=0\)
Use the product rule to differentiate terms in both x and y.
\(\boxed{\dfrac{\text{d}}{\text{d}x}u(x)v(y)=u(x)\dfrac{\text{d}}{\text{d}x}v(y)+v(y)\dfrac{\text{d}}{\text{d}x}u(x)}\)
\(\implies 8x+\left(5x\dfrac{\text{d}}{\text{d}x}y+y\dfrac{\text{d}}{\text{d}x}5x\right)+4y^3\dfrac{\text{d}y}{\text{d}x}=0\)
\(\implies 8x+5x\dfrac{\text{d}y}{\text{d}x}+5y+4y^3\dfrac{\text{d}y}{\text{d}x}=0\)
Rearrange the resulting equation in x, y and dy/dx to make dy/dx the subject:
\(\implies 5x\dfrac{\text{d}y}{\text{d}x}+4y^3\dfrac{\text{d}y}{\text{d}x}=-8x-5y\)
\(\implies \dfrac{\text{d}y}{\text{d}x}(5x+4y^3)=-8x-5y\)
\(\implies \dfrac{\text{d}y}{\text{d}x}=\dfrac{-8x-5y}{5x+4y^3}\)
To find the slope of the tangent line at the point (-9, -1), substitute x = -9 and y = -1 into the differentiated equation:
\(\implies \dfrac{\text{d}y}{\text{d}x}=\dfrac{-8(-9)-5(-1)}{5(-9)+4(-1)^3}\)
\(\implies \dfrac{\text{d}y}{\text{d}x}=\dfrac{72+5}{-45-4}\)
\(\implies \dfrac{\text{d}y}{\text{d}x}=-\dfrac{77}{49}\)
\(\implies \dfrac{\text{d}y}{\text{d}x}=-\dfrac{11}{7}\)
Therefore, slope of the tangent line to the curve at the given point is -11/7.
Last week, the price of oranges at the farmers market was $1.75 per pound. This week, the price has decreased by 15%. What is the price of
oranges this week?
Answer:
11.6 (6 is repeating)
Step-by-step explanation:
1.75 divided by 15% of 75