Answers
The sales tax is $1.2 and the total cost of the item is $21.2 .
In the question,
it is given that ,
the selling price of the item is $20.
the rate of sales tax is = 6^ ,
so the sales tax can be calculated using the formula
sales tax = 6% of selling price
So , sales tax = 6% of 20
= 0.06 * 20
= 1.2
so , the sales tax is $1.2
the total cost of the item will be = selling price + sales tax
= 20 + 1.2
= 21.2
Therefore , The sales tax is $1.2 and the total cost of the item is $21.2 .
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Related Questions
A flagpole casts a shadow 18m long when the athlete of the sun is 54°. What is the height of the flagpole.
Answers
If flagpole casts a shadow 18m long when the angle of elevation of the sun is 54° then the height of the flagpole will be 24.8 m .
In the question ,
it is given that ,
the length of the shadow of the flag pole = 18m
the angle of "elevation" of the sun = 54°
let the height of the flagpole be = "x" ,
The flagpole and the shadow form a right triangle ,
So , tan(54°) = (height of flag pole)/(shadow of flagpole)
Substituting the values from above ,
we get ,
tan(54°) = x/18
on cross multiplication ,
x = 18 × tan(54°)
x = 18 × 1.3763
x = 24.7734
x ≈ 24.8
Therefore , If flagpole casts a shadow 18m long when the angle of elevation of the sun is 54° then the height of the flagpole will be 24.8 m .
The given question is incomplete , the complete question is
A flagpole casts a shadow 18m long when the angle of elevation of the sun is 54°. What is the height of the flagpole ?
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find the missing side of the right triangle.
Answers
Answer:
8
Step-by-step explanation:
a^2 + b^2 = c^2
4^2 + (4√3)^2 = c^2
16 + 48 = c^2
64 = c^2
√64 = c
8 = c
The Florida Fish and Wildlife Conservation Commission is conducting a study on wildlife patterns and behaviors in a specific area of the Florida Everglades. A stationary camera is placed where the area being observed can be filmed and recorded for 96 hours. Researchers found that the footage revealed that the Cape Sable Seaside Sparrows were observed in the area once every 6 hours and the Florida Leafwing Butterfly was observed in the area once every 9 hours.
How many hours of footage would the observers need to review to see the Cape Sable seaside sparrow and the Florida leafwing butterfly in the area at the same time?
Number of Hours:
Answers
Answer:
18 hours of footage.
Step-by-step explanation:
This is a LCM problem. The least common multiple of 6 and 9 is 18. The minimum amount of hours needed to see the sparrow and butterfly at the same time is 18.
Write the standard form of the line that passes through the given points using the steps below. Include your work for each step in your final answer. Type your answer in the box provided to submit your solution.
(6, 1) and (5, 4)
a) Using variables, write out the formula for the standard form of the equation.
b) Determine the slope of the line.
c) Write the point-slope form of the line.
d) Using the properties of algebra, rearrange the equation into the standard form.
Answers
a) The general equation is:
y = m*(x - h) + k
b) The slope is -3
c) the point-slope form is: y = -3*(x - 6) + 1
d) The standard form is: y + 3x = 19
How to get the equation for the line?We will write a linear equation that relates two variables x and y, and the slope-point form is given by:
y = m*(x - h) + k
Where m is the slope, and (h, k) is a point on the line.
Particularly, if a line passes through two points (a, b) and (c, d), then the slope of that line is:
m = (d - b)/(c - a)
In this case, the line passes through (6, 1) and (5, 4), then the slope is:
m = (4 - 1)/(5 - 6) = 3/-1 = -3
Now we can use one of the given points to write the line in the point-slope form, I will use (6, 1) to get:
y = -3*(x - 6) + 1
Now we want to write this in standard form.
Expanding the right side we get:
y = -3x + 18 + 1
y = -3x + 19
Adding 3x in both sides we get:
y + 3x = 19
This is the standard form.
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Open-Ended Write an equation for the line in slope-intercept form. Use pencil and paper. Which part of writing
the equation is the most difficult? The easiest? Explain.
(Use integers or fractions for any numbers in the equation.)
Answers
The equation of the line in slope-intercept form is y = -5x
How to determine the equation of a line into slope-intercept form?From the question, we have the graph that can be used in our computation
On the graph, we have the following points
(0, 0) and (-1, -5)
Start by calculating the slope using
Slope = (y₂ - y₁)/(x₂ - x₁)
Where,
(x, y) = (0, 0) and (1, -5)
So, we have
Slope = (-5 - 0)/(1 - 0)
This gives
Slope = -5
The equation of the line is then calculated as
y= Slope * (x - X) + Y
So, we have
y = -5 * (x - 0) + 0
Evaluate
y = -5x
Hence, the equation is y = -5x
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Find the amount (future value) of ordinary annuity $1000 a year for 10 years at 10%/year compounded annually.
a.
$15,500
b.
$15,937
c.
$16,456
d.
$16,845
Answers
The future value of ordinary annuity $1000 a year for 10 years at 10% year compounded annually is $15937.
The value of a sum of money that will be paid on a specified date in the future is known as its future value. Since each payment is made at the end of a period, the formula for the future value of an ordinary annuity refers to the value on a specified future date of a series of periodic payments.
Given,
R=$1000, n=10, i=10%=10/100=0.1
The formula to calculate the future value is
FV=R[(1+i)^n-1]/i
[tex]FV=R(\frac{(1+i)^{n} -1}{i})[/tex]
[tex]FV=1000(\frac{(1+0.1)^{10} -1}{0.1})[/tex]
[tex]FV=1000(\frac{(1.1)^{10} -1}{0.1})[/tex]
[tex]FV=1000(\frac{1.593742}{0.1})[/tex]
[tex]FV=1000\times15.9374[/tex]
[tex]FV=15937.4[/tex]
Future Value approximately equal to $15937.
Therefore, the future value of the ordinary annuity $100 a year for 10 years at 10% compounded annually is $15937, Option c is the correct answer.
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1 What is the cost to get into a Green Cab?
2 How much does it cost per mile for a Green Cab?
3 What is the equation, in slope-intercept form, that relates the cost compared to the miles traveled for a Green Cab?
Answers
Answer:
1. $5
2. $1 per mile
3.y=x+5
Step-by-step explanation:
1. If you look at the graph you can see that the cost for 0 miles with the Green Cab is $5
2.If you look at the graph, for each mile traveled, the cost is $1
3. Since for each increase 1 increase in x, y increases by the same amount, the slope is 1
y=mx+b is the slope intercept form
m=slope
b=y intercept
since we know the slope is 1 we can put it in
y=1x+b
=y=x+b
to find the y intercept we can look at the graph and see what y equals when x is 0.
the y intercept is (0,5)
we can put that in so the equation in slope intercept form is
y=x+5
A parabola can be drawn given a focus of
(-8, 1) and a directrix of y=-1. What
can be said about the parabola?
The parabola has a vertex at
( , ) has a p-value of ( )
and it
Answers
We can say about the parabola given a focus of (-8, 1) and a directrix of y = -1 is as:
The parabola is a vertical parabola and facing up.The vertex of the parabola is v(-8, 0).p value of the parabola is 1.A parabola refers to the shape that traces the equation of the form ax² + bx + c.
A parabola's directrix is a vertical or horizontal line that never contacts the parabola and is located at p distance from the vertex and 2p distance from the focus.
The parabola created when the directrix is on the y coordinate called a vertical parabola.
If the directrix value is greater than the corresponding focus or vertex, there will be a negative p and the parabola will face downhill.
If the directrix value is less than the corresponding focus or vertex, there will be positive p and the parabola will face up.
From the given definition of the directrix, we can find the value of p;
2p = y coordinate of focus - equation of the directrix
2p = 1 - (-1)
2p = 2
p = 1
Vertex, v(h, k) compared with f(h, k + p), we will get;
k + p = 1
k = 0
Therefore, the vertex is (-8, 0).
Thus, we can say about the parabola given a focus of (-8, 1) and a directrix of y = -1 is as:
The parabola is a vertical parabola and facing down.The vertex of the parabola is v(-8, 0).p value of the parabola is 1.To learn more about directrix of a parabola visit:
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In the given figure, the reflex angle DOB measures 3.5y and AOD measures Y. Find the measures of the non reflex DOB in degrees.
Answers
The measure of non reflex angle DOB in degrees is 140°
Calculating the measure of an angleFrom the given information, we are to determine the measure of the non reflex angle DOB
From the given information,
m reflex ∠ DOB = 3.5y
and
m ∠ AOD = y
First, we will determine the value of y
From Linear pair theorem, we can write that
3.5y + y = 180°
4.5y = 180°
y = 180°/4.5
y = 40°
Also,
y + m ∠ DOB = 180° (Linear pair theorem)
Thus,
40° + m ∠ DOB = 180°
m ∠ DOB = 180° - 40°
m ∠ DOB = 140°
Hence, the measure of ∠ DOB is 140°
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Multiply. 3√2 ⋅ 2√8 ⋅ 3√. 6√ Enter your answer, in simplest radical form, in the box.
Answers
Answer:
the answer i think it is 432
You work a basic week of 40 hours and your basic rate is $19.50 per hour. What is your basic wage for the week and showing working for this question.
Answers
If you work $19.50 per hour and you work 40 hours a week, you need to multiply 19.50 by 40 to get your answer
19.50 x 40 = $ 780 a week.
I hope this helps!
Make A the subject of the formula
Answers
Hope it helps Tsha!
Evaluate The Triple Integral. Triple Integral 7x2 DV, Where T Is The Solid Tetrahedron With Verticies (0, 0, 0), (1, 0, 0), (0, 1, 0), And (0, 0, 1)
Answers
By evaluating The Triple Integral. Triple Integral 7x2 DV, Where T Is The Solid Tetrahedron With Verticies (0, 0, 0), (1, 0, 0), (0, 1, 0), And (0, 0, 1) the value calculated is 7/60.
Given:
= ∫∫∫7[tex]x^{2}[/tex] dV
T(x,y,z) : 0≤x≤1; 0≤y≤1-x; 0≤z≤1-x-y]
apply limits and solving we get:
= 7/2([tex](x^{3} /3+x^{5} /5-x^{4}/2)[/tex]
= 7/2(1/3+1/5-1/2)
= 7/2(1*5+1*3/15 - 1/2)
= 7/2(8/15 - 1/2)
= 7/2(16 - 15/30)
= 7/2*1/30
= 7/60
Therefore after evaluating the value of triple integral is 7/60.
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7.78, 7.8, 6.969, 7.7081 order these numbers from least to greatest
Answers
(r, 3), (5, 9), m=2 what is the answer
Answers
The value of the unknown variable in the ordered pair is 8
How to determine the value of the unknown variable in the ordered pair?From the question, we have the following ordered pairs that can be used in our computation:
(r, 3), (5, 9)
Also, we have
m = 2
The meaning of the above notations are
Ordered pairs (x, y) = (r, 3), (5, 9)
Slope, m = 2
The slope of points is calculated using the following slope equation
Slope, m = (y₂ - y₁)/(x₂ - x₁)
Where
(x, y) = (r, 3), (5, 9) and m = 2
Substitute the known values in the above equation, so, we have the following representation
(9 - 3)/(r - 5) = 2
Evaluate the difference
This gives
6/(r - 5) = 2
Divide both sides by 2
So, we have
3/(r - 5) = 1
Cross multiply
r - 5 = 3
So, we have
r = 3 + 5
Evaluate the sum
r = 8
Hence, the value of r is 8
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Possible question
What is the value of r using the following points and slope
(r, 3), (5, 9), m=2
POPULATION The projected population in thousands for a city over the next several years can be estimated by the
function P(x)=x³ + 2x² - 8x + 520, where x is the number of years since 2005. Use synthetic substitution to estimate
the population for 2015.
O 1,640,000
O 1,320,000
O 590,000
O 36,240,000
Answers
The population for 2015 is 1,640,000 ,so option A is correct.
Given:
The projected population in thousands for a city over the next several years can be estimated by the function P(x)=x³ + 2x² - 8x + 520.
where x is the number of years since 2005.
x = 2015 - 2005
x = 10
P(x) = x³ + 2x² - 8x + 520.
= [tex]10^{3} +2(10^{2} )-8*10+520[/tex]
= 1000 + 2*100 - 80 + 520
= 1520 + 200 - 80
= 1720 - 80
= 1640.
Given the projected population in thousands so = 1640 * 1000
= 1640000.
Therefore The population for 2015 is 1,640,000 ,so option A is correct.
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there is a line that includes the point (2,10) and has a slope of 8. what is its equation in slope intercept form?
Answers
[tex](\stackrel{x_1}{2}~,~\stackrel{y_1}{10})\hspace{10em} \stackrel{slope}{m} ~=~ 8 \\\\\\ \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}{10}=\stackrel{m}{ 8}(x-\stackrel{x_1}{2}) \\\\\\ y-10=8x-16\implies {\Large \begin{array}{llll} y=8x-6 \end{array}}[/tex]
In a circle, an angle measuring 9.3 radians intercepts an arc of length 19.1. Find the
radius of the circle to the nearest 10th.
Answers
The radius of the circle to the nearest 10th is 2.0537.
Given:
In a circle, an angle measuring 9.3 radians intercepts an arc of length 19.1.
we know that,
radians = arc / radius
radius = arc/radians
= 19.1/9.3
= 191/10/93/10
= 191/93
≈ 2.0537
Therefore the radius of the circle to the nearest 10th is 2.0537.
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In a two-digit number, the units digit is 5 more than the tens digit. The number itself is three times the sum of its digits. What is this number?
Answers
Answer:
The number is 27.
Step-by-step explanation:
Since the units digit has to be 5 more than the tens digit, there are only four possible two-digit numbers which satisfy this condition. They are 16, 27, 38, and 49.
Next, the digits can be added and multiplied by three to check that the answer is the same two-digit number.
3 (1 + 6) = 21 does not work because 16 isn't the same as 21.
3 (2 + 7) = 27 does work because 3 * 9 is 27.
3 (3 + 8) = 33
3 (4 + 9) = 39
A worker ha 23 % of her weekly pay withheld for taxe, inurance, and a penion plan. If her weekly gro pay i 740 $, find her total withholding and net pay
Answers
Answer:
569.80
Step-by-step explanation:
These marbles are placed in a bag and two
of them are randomly drawn.
What is the probability of drawing two
yellow marbles if the first one is placed back
in the bag before the second draw?
Give your answer as a ratio, reduced to
simplest terms.
?
Hint: Multiply the probability of the 1st Event by the
probability of the 2nd Event to get your answer
Answers
Answer:
There are 10 marbles, 2 are yellow
The probability would be 2:10 but in simplest form 1:5
The probability of picking both the same = 1:5 x 1:5 = 1:25
Step-by-step explanation:
Last year, Dan opened an investment account with $7800. At the end of the year, the amount in the account had increased by 29.5%. How much is this increase
In dollars? How much money was in his account at the end of last year?
Answers
Answer:
10,101
Step-by-step explanation:
Percent (%) means 'out of one hundred'
29.5%= 29.5/100 'out of one hundred'
----------------------------------------------------------------------
How to increase the number 7,800
by 29.5% of it's value?
1.) Calculate the new value of the number increased by the percentage of it's initial value
The new value=
7,800+ The value of the percentage increase=
7,800 + (29.5% x 7,800) =
7,800 + 29.5% x 7,800=
(1 + 29.5%) x 7,800=
(100% + 29.5%) x 7,800=
129.5% x 7,800
129.5 ÷ 100 x 7,800=
129.5 x 7,800 ÷ 100=
1,010,100 ÷ 100=
10,101
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I hope this was helpful!
Write an equation for the line in the slope-intercept form.
slope= 8/9, y-intercept=-4
A) f(x) = 9/8x +9/2
B) f(x) = -8/9x - 4
C) f(x) = 8/9x - 4
D) f(x) = -8/9x + 4
Answers
Answer:
C
Step-by-step explanation:
the equation of a line in slope- intercept form is
f(x) = mx + c ( m is the slope and c the y- intercept )
here m = [tex]\frac{8}{9}[/tex] and c = - 4 , then
f(x) = [tex]\frac{8}{9}[/tex] x - 4 ← equation of line
Determine whether f(x) = 1 − x is linear. If so, give the slope and y-intercept.
A. yes
slope = −1
y-intercept = 1
B. false
C. yes
slope = 1
y-intercept = −1
D. yes
slope = 1
y-intercept = 1
Answers
Answer:
a
Step-by-step explanation:
f(x) = y, so y=1-x. the slope is always infront of the x, so if there is nothing infront of x then it'll be a 1. so in this cas slope is a -1 and the y intercept is 1.
Can someone pleaseeee solve this for me?
Answers
Answer:26
Step-by-step explanation:
0.75(8+e)=2−1.25e slove for E
Answers
The value of 'E' in the algebraic equation is -2
What is algebraic equation?Algebraic equation is a mathematical statement in which two expressions are set equal to each other.
Therefore, let solve for 'E' in the equation 0.75(8+e)=2−1.25e
Use 0.75 to open the bracket
6 + 0.75e = 2 -1.25e
Collect the like terms
0.75e+1.25e = 2-6
2e = -4
Divide both sides by 2
2e/ 2 = -4/2
e =-2
Therefore, the value of 'E' in the equation is -2
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One of the legs of a right triangle measures 3 cm and its hypotenuse measures 16 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.
Answers
According to the Pythagoras theorem, the value of the other leg is, 15.7 cm
Pythagoras theorem:
Pythagoras theorem defines that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Given,
One of the legs of a right triangle measures 3 cm and its hypotenuse measures 16 cm.
Here we need to find the measure of the other leg and round off it to nearest tenth.
Though the given question, we know that the value of
Hypotenuse = 16 cm
one leg = 3cm,
Then let us consider the length of the other leg as x.
So, according to the Pythagoras theorem,
It can be calculated as,
=> hypotenuse² = one leg² + other leg²
=> 16² = 3² + x²
=> 256 = 9 + x²
Here we need the value of x, so it can be rewritten as,
=> 247 = x²
=> x = √247
When we take square root for 247, then we get the value of x as,
=> x = 15.716
When we round off it to the nearest tenth then we get the value of another leg as 15.7 cm.
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The graph of a sinusoidal function has a minimum point at (0,2)(0,2)left parenthesis, 0, comma, 2, right parenthesis and then has a maximum point at (3\pi,6)(3π,6)left parenthesis, 3, pi, comma, 6, right parenthesis.
Write the formula of the function, where xxx is entered in radians.
Answers
The (0, 2) and (3•π, 6) minimum and maximum points on the graph of the sinusoidal function indicates that the function is as follows
[tex]y = 2\cdot sin\left(\dfrac{1}{3} \times \left(x - \dfrac{3\times \pi}{2} \right)\right) + 4[/tex]
What is a sinusoidal function?A sinusoidal function is a function based on the trigonometric function of sine.
The points on the graph of the sinusoidal function are;
Minimum point of the function; (3•π, 6)
Maximum point of the function; (0, 2)
The general form of the equation of a sinusoidal function is presented as follows;
The sinusoidal function equation is; y = a×sin(b×(x - h)) + k
The amplitude, a, is half the distance between the maximum and minimum points, therefore;
a = (6 - 2)÷2 = 2
a = 2
From the information in the question, when x = 0, y = 2
Plugging in the values of x = 0, y = 2in the equation, y = a×sin(b×(x - h)) + k, produces;
2 = 2×sin(b×(0 - h)) + k
The point (0, 2) is a minimum point, therefore; sin(b×(0 - h)) = -1
2 = 2×sin(b×(0 - h)) + k = 2×(-1) + k = -2 + k
k = 2 + 2 = 4
At the minimum point the value of sine is -1, which indicates that the value of the argument, (b•(0 - h)) = -π/2
Therefore; -b•h = -π/2
h = π/(2·b)
At the maximum point, (b×(x - h)) = π/2
Therefore; (b×(3×π - π/(2×b))) = π/2
b = 1/3
Therefore;
h = π/(2×b) = 3×π/2
y = 2×sin((1/3)×(x - 3×π/2)) + 4
The function is; y = 2×sin((1/3)×(x - 3×π/2)) + 4
The formula of the function for the graph is therefore; y = 2×sin((1/3)×(x - 3×π/2)) + 4
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Use point-slope form to write the equation of a line that passes through the point (-7,-8) with slope -3/11
Answers
Answer:
y + 8 = -3/11(x+7)
Step-by-step explanation:
What is the point-slope form formula?
y-y1=m(x-x1) -------> y+8=-3/11(x+7)
graph the function f(x) = 1/3x + 1 and the function g(x) = f(6x)
PLEASE HELP!! (add picture of graph, or give formula
Answers
Graph of the given function f(x) = ( 1 / 3 )x + 1 and g ( x ) = f ( 6x ) is attached for the different values of x and y. Graph of both the function f(x) and g(x) intersect at point ( 0, 1 ).
As given in the question,
Given function are as follow:
f(x) = ( 1 / 3 )x + 1
g ( x ) = f ( 6x )
Calculate the function g(x) for f ( 6x ) is given by,
g ( x ) = f ( 6x )
⇒ g ( x ) = ( 1 / 3 )6x + 1
⇒ g ( x ) = 2x + 1
Substitute the value of x to get value of f ( x ) and g ( x ) and put it on graph.
After putting all the values of f(x) and g(x) .
Graph intersect at ( 0, 1 )
Graph is attached.
Therefore, graph of the given function f(x) = ( 1 / 3 )x + 1 and g ( x ) = f (6x ) is attached for the different values of x and y. Graph of both the function f(x) and g(x) intersect at point ( 0, 1 ).
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