Answer:
translate to eng
Step-by-step explanation:
Please help!! Ignore the X on A!
Answer:
AC= 3.2
Step-by-step explanation:
two trianglesare similar
so AC : BC = DF : EF
AC : 4 = 3:2.4
4×3.2 = AC×4
12.8=4×AC >>>> (÷4) both sides
3.2= AC
Express the function graphed on the axes below as a piecewise function.104-10-8-6-4-2246810-6
Step 1
Find the equation of both lines using
[tex]\frac{y_2-y_1}{x_2-x_1}=\text{ }\frac{y-y_1}{x-x_1}[/tex]Where,
[tex]\begin{gathered} y_1=-9 \\ y_2=\text{ -2} \\ x_1=\text{ -6} \\ x_2=1 \end{gathered}[/tex]Hence,
[tex]\frac{-2-(-9)}{1-(-6)}=\frac{y-(-9)}{x-(-6)}[/tex][tex]\begin{gathered} \frac{7}{7}=\frac{y+9}{x+6} \\ y+9\text{ = x+6} \\ y\text{ = x+6-9} \\ y\text{ = x-}3 \end{gathered}[/tex]For the second line we will have
[tex]\begin{gathered} \frac{-4-(-8)}{1-5}=\text{ }\frac{y-(-8)_{}}{x-5} \\ \frac{4}{-4}=\frac{y+8}{x-5} \\ -1(x-5)\text{ = y+8} \\ -x+5\text{ = y+8} \\ y\text{ =- x+5-8} \\ y\text{ = -x-3} \end{gathered}[/tex]Step 2
Hence expressed the graphed solution as a piecewise function
[tex]f(x)=\begin{cases}x-3,-6\leq x<1 \\ \square \\ -x-3,-1Write the equation for the vertical line and horizontal line that passes through each point. V(5, -2) AndT(10, -3)
Given
V(5, -2)
T(10, -3)
Procedure
For V:
The equation of the horizontal straight line corresponds to y = -2.
The equation of the vertical straight line corresponds to x = 5
For T:
The equation of the horizontal straight line corresponds to y = -3.
The equation of the vertical straight line corresponds to x = 10
) What is the surface area in square In
8 in
10 in
12 in
10 in
10 in
Answer:
Surface area is the total area of the faces of a three-dimensional shape.
A square can not have a surface area since it's two dimensional. If you meant the area of a square then the formula is:
A = a²
a = length of side
8 in = 64 in
10 = 100 in
12 = 144 in
Please help
3. In the formula A = lw, find A when I is
5 inches and w is 25 inches.
Answer:
125 inches squared
Step-by-step explanation:
A=lw
A=(5)(25)
A=125
Simplify14. (5-2)(4 + 31)20 - 81 - 612b. 26 + 7i20 + 4i
At first, we multiply 5 by 4
[tex]5\times4=20[/tex]Then multiply 5 by 3i
[tex]5\times3i=15i[/tex]Then multiply -2i by 4
[tex]-2i\times4=-8i[/tex]Then multiply -2i by 3i
[tex]-2i\times3i=-6i^2[/tex]Since i^2 = -1, then we will multiply -6 by -1
[tex]-2i\times3i=-6i^2=-6\times-1=6[/tex]Now, we will add the terms
[tex]20+15i-8i+6[/tex]Then we will add the like terms
[tex]20+15i-8i+6=(20+6)+(15i-8i)=26+7i[/tex]So the answer is b
help quick 30 points
Answer:
y = -5x + 6
Step-by-step explanation:
Looking at the graph it looks that the slope of the line is -5
and the y intercept is (0, 6)
So the slope intercept form is y = -5x + 6
this should be correct hope this helps
What is the equation of a line that is parallel to −2x+3y=−6 and passes through the point (−2, 0)?
Enter your answer in the box.
Answer:
[tex]y=\frac{2}{3}x +\frac{4}{3}[/tex]
Step-by-step explanation:
[tex]-2x+3y=-6\\3y=2x-6\\y=\frac{2}{3}x-2\\ \\\\Then\\y-0=\frac{2}{3}(x-(-2)\\ y-0=\frac{2}{3}x+\frac{4}{3} \\Therefore, the answer is y=\frac{2}{3}x+\frac{4}{3}[/tex]
Debra earns $12.45 per hour and worked 26 34 hours last week. What is her gross pay?
Screenshot down below
The number of miles that is covered is 1458 miles.
What is the gas mileage?The term gas mileage refers to the distance that have been covered by the car using a given volume of gas. It is common that the unit that is used to measure the volume of the gas is the US gallon.
We have been told that;
420 miles could be covered by the use of 20 gallons
1 mile can be covered by the use of 1 mile * 20 gallons/ 420 miles
= 0.048 gallons
If 1 mile requires 0.048 gallons
x miles requires 70 gallons
x = 1 mile * 70 gallons/0.048 gallons
x = 1458 miles
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How do I get the other number and it’s bye using writing perfect-square trinomials
25
1) We must start by reminding the binomials. Since this question refers to a perfect square trinomial then we can write:
[tex](a-b)^2=a^2-2ab+b^2[/tex]2) Now we can look at the expression. Let's start by dividing that 10 by 2, since we have to write that -10x as 2 times the product of x and the other term:
[tex]\begin{gathered} -\frac{10}{2}=5 \\ (x-5)^2=x^2-2(5)(x)+5^2=x^2-10x+25 \end{gathered}[/tex]Note that the second term is 5²= 25
3) Hence, the answer is 25
The stock price for JSR was $74.29 in August. In September the stock had increased by 7%, but in October the price fell by 7%. What was the price of JSR stock in October? Round your answer to the nearest cent, if necessary.
In order to find the price increase multiply by 1 and add the 7%,
[tex]\begin{gathered} 74.29\cdot(1+0.07) \\ 74.29\cdot1.07 \\ 79.4903 \end{gathered}[/tex]then, apply the same to subtract the 7%
[tex]\begin{gathered} 79.4903\cdot(1-0.07) \\ 79.4903\cdot(0.93) \\ 73.925\approx73.93 \end{gathered}[/tex]if a baker has 7/3 cups of chocolate, the baker can make a maximum of .... cakes.
She calls for 4/5 cup of chocolate
She had 7/3 cups of chocolate.
[tex]\begin{gathered} \text{The bake can make a ma}\xi mum\text{ of = }\frac{7}{3}\text{ }\frac{.}{.}\text{ }\frac{4}{5} \\ \text{ = }\frac{7}{3}\text{ x }\frac{5}{4} \\ \text{ = }\frac{35}{12} \\ \text{ = 2}\frac{11}{12} \\ \end{gathered}[/tex]Maximum number of cakes a baker can make = 2
What is the value of the expression (−3.69)0?
_____
The value of the expression (-3.69)0 is zero as any number multiplied zero times is zero.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
The value of the expression (-3.69)0 is zero itself.
Anything multiplied by nothing is nothing right.
A numerical value is given which is -3.69 it is multiplied with zero, so a number multiplied zero times is obviously zero.
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IS -9z divided by 2 = 13 closed or open
The statement -9z divided by 2 = 13 is a closed statement
How to determine the type of statement?From the question, the statement of the expression is given as
-9z divided by 2 = 13
When the statement is rewritten as an expression, it becomes
-9z/2 = 13
In the above equation, we can see that we have a variable
The variable is represeneted by z
When a mathematical statement or an expression has a variable
Then such statement is an open statement
Hence, the given expression is open
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The table lists recommended amounts of food to order for 19 party guests. Nathan and Sydney are hosting a graduation party for 40 guests. They know there will also be guests stopping by who may have come from other parties. For ordering purposes, they will count each of these "drop-in" guests as half a guest. How much of each food item should Nathan and Sydney order for a graduation party with 15 drop-in guests?table: fried chicken =28 meats =4 1/3 lasangnia = 10 3/4
For the graduation party, Nathan and Sydney should order pieces of 70 fried chicken , 11 pounds of meats and 36 pounds of lasangnia .
In the question ,
it is given that
there are 15 drop in guests , and drop in guests are counted as half a guest .
So , the number of half guests = 15/2 = 7.5
number of guests for the party = 40 guests
So , total number of guests = 40+7.5 = 47.5
From the table , we can see that
19 party guests need 28 pieces of fried chicken .
So , 1 party guests will need 28/19 pieces of fried chicken .
so, 47.5 guests will need [tex]47.5*\frac{28}{19}[/tex] pieces of fried chicken
[tex]47.5*\frac{28}{19}[/tex] = 70
hence , 70 pieces of fried chicken is needed .
From the table , we can see that
19 party guests need [tex]4\frac{1}{3}[/tex] = 13/3 pounds of meats .
so, 1 party guests will need 13/(3*19) pounds of meats .
So, 47.5 guests will need [tex]47.5*\frac{13}{3*19}[/tex] pounds of meats .
[tex]47.5*\frac{13}{3*19}[/tex] = 10.833
≈ 11
hence , 11 pounds of meats is needed .
From the table , we can see that
19 party guests need [tex]10\frac{3}{4}[/tex] = 43/3 pounds of lasangnia .
So , 1 party guests will need 43/(3*19) pounds of lasangnia .
So, 47.5 guests will need [tex]47.5*\frac{43}{3*19}[/tex] pounds of lasangnia .
[tex]47.5*\frac{43}{3*19}[/tex] = 35.8333
≈ 36
hence , 36 pounds of lasangnia is needed .
Therefore , For the graduation party Nathan and Sydney should order 70 pieces of fried chicken , 11 pounds of meats and 36 pounds of lasangnia .
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what is the angle between west and north west
Answer:
the angle between west and Northwest is 90°
has being supplementry angles
hope it helps
Answer:
45°
Step-by-step explanation:
the angle between north and west is 90°
northwest is situated centrally between north and west at an angle of 45°
Jayden was out at a restaurant for dinner when the bill came. His dinner came to $29. After adding in a tip, before tax, he paid $34.22. Find the percent tip
The percent tip when Jayden's dinner bill is $29 is 18%.
According to the question,
We have the following information:
Bill of Jayden's dinner = $29
After adding the tip, Jayden paid $34.22.
Now, we will find the percent tip.
First, we will find the amount added to the bill.
$(34.22-29)
$5.22
Now, let's take the percent tip to be x%.
x% of 29 = 5.22
29x/100 = 5.22
29x = 522
x = 522/29 (29 was in multiplication on the left hand side. So, it is in the division on the right hand side.)
x = 18%
Hence, the percent tip on Jayden's dinner is 18%.
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What is the lowest common multiple of 19 & 9
Solution:
LCM of 9 and 19 is the smallest number among all common multiples of 9 and 19.
The first few multiples of 9 and 19 are (9, 18, 27, 36, 45, 54, . . . ) and (19, 38, 57, 76, 95, . . . ) respectively.
There are 3 commonly used methods to find LCM of 9 and 19 - by listing multiples, by division method, and by prime factorization.
To calculate the LCM of 9 and 19 by the division method, we will divide the numbers(9, 19) by their prime factors (preferably common). The product of these divisors gives the LCM of 9 and 19.
In this case, we get:
Then, the LCM would be:
[tex]3\text{ x 3 x 19 = }171[/tex]so that, the correct answer is:
[tex]171[/tex]Which brand of granola typically weighs more?
Brand A bags typically weigh more because the median of brand A is higher than that of brand B.
Brand B bags typically weigh more than brand A bags because there is a high outlier at 52.5.
Brand A bags typically weigh more than brand B bags because there are no outliers in the distribution.
Brand B bags typically weigh more because the range of weights is higher than that of brand A.
Brand A bags typically weigh more because the median of brand A is higher than that of brand B and is denoted as option A.
What is Median?This is referred to as the middle value which separates the higher half from the lower half of a data or distribution. This is calculated by first ordering the numbers which could be from the lowest to highest or vice versa.
A data sample which has a higher figure as the median means that it has higher values present in the data distribution. This term provides an insight on certain properties of the values of the data which are given.
In this scenario, the median of brand A is higher than that of brand B which means that it has more weight and is therefore the reason why option A was chosen as the correct choice.
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A triangle has side lengths of 10 inches, 11 inches, and 12 inches. What kind of triangle is it?
Answer:
Acute scalene triangle.
More Information:
Sides: a = 10 b = 11 c = 12
Area: T = 51.521
Perimeter: p = 33
Semiperimeter: s = 16.5
Angle ∠ A = α = 51.318° = 51°19'4″ = 0.896 rad
Angle ∠ B = β = 59.17° = 59°10'10″ = 1.033 rad
Angle ∠ C = γ = 69.513° = 69°30'46″ = 1.213 rad
Height: ha = 10.304
Height: hb = 9.367
Height: hc = 8.587
Median: ma = 10.368
Median: mb = 9.579
Median: mc = 8.631
Inradius: r = 3.122
Circumradius: R = 6.405
Vertex coordinates: A[12; 0] B[0; 0] C[5.125; 8.587]
Centroid: CG[5.708; 2.862]
Coordinates of the circumscribed circle: U[6; 2.242]
Coordinates of the inscribed circle: I[5.5; 3.122]
Exterior (or external, outer) angles of the triangle:
∠ A' = α' = 128.682° = 128°40'56″ = 0.896 rad
∠ B' = β' = 120.83° = 120°49'50″ = 1.033 rad
∠ C' = γ' = 110.487° = 110°29'14″ = 1.213 rad
How to Solve:
The calculation of the triangle has two phases. The first phase calculates all three sides of the triangle from the input parameters. The first phase is different for the different triangles query entered. The second phase calculates other triangle characteristics, such as angles, area, perimeter, heights, the center of gravity, circle radii, etc. Some input data also results in two to three correct triangle solutions (e.g., if the specified triangle area and two sides - typically resulting in both acute and obtuse) triangle).
1. Input data entered: sides a, b, and c.
a=10
b=11
c=12
We know the lengths of all three sides of the triangle, so the triangle is uniquely specified. Next, we calculate another of its characteristics - the same procedure for calculating the triangle from the known three sides SSS.
a=10
b=11
c=12
2. The triangle perimeter is the sum of the lengths of its three sides
3. Semiperimeter of the triangle
The semiperimeter of the triangle is half its perimeter. The semiperimeter frequently appears in formulas for triangles to be given a separate name. By the triangle inequality, the longest side length of a triangle is less than the semiperimeter.
4. The triangle area using Heron's formula
Heron's formula gives the area of a triangle when the length of all three sides is known. There is no need to calculate angles or other distances in the triangle first. Heron's formula works equally well in all cases and types of triangles.
5. Calculate the heights of the triangle from its area.
There are many ways to find the height of the triangle. The easiest way is from the area and base length. The triangle area is half of the product of the base's length and height. Every side of the triangle can be a base; there are three bases and three heights (altitudes). Triangle height is the perpendicular line segment from a vertex to a line containing the base.
6. Calculation of the inner angles of the triangle using a Law of Cosines
The Law of Cosines is useful for finding a triangle's angles when we know all three sides. The cosine rule, also known as the Law of Cosines, relates all three sides of a triangle with an angle of a triangle. The Law of Cosines extrapolates the Pythagorean theorem for any triangle. Pythagorean theorem works only in a right triangle. Pythagorean theorem is a special case of the Law of Cosines and can be derived from it because the cosine of 90° is 0. It is best to find the angle opposite the longest side first. With the Law of Cosines, there is also no problem with obtuse angles as with the Law of Sines because the cosine function is negative for obtuse angles, zero for right, and positive for acute angles. We also use inverse cosine called arccosine to determine the angle from the cosine value.
7. Inradius
An incircle of a triangle is a tangent circle to each side. An incircle center is called an incenter and has a radius named inradius. All triangles have an incenter, and it always lies inside the triangle. The incenter is the intersection of the three-angle bisectors. The product of the inradius and semiperimeter (half the perimeter) of a triangle is its area.
8. Circumradius
The circumcircle of a triangle is a circle that passes through all of the triangle's vertices, and the circumradius of a triangle is the radius of the triangle's circumcircle. The circumcenter (center of the circumcircle) is the point where the perpendicular bisectors of a triangle intersect.
9. Calculation of medians
A median of a triangle is a line segment joining a vertex to the opposite side's midpoint. Every triangle has three medians, and they all intersect each other at the triangle's centroid. The centroid divides each median into parts in the ratio of 2:1, with the centroid being twice as close to the midpoint of a side as it is to the opposite vertex. We use Apollonius's theorem to calculate the length of a median from the lengths of its side.
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evaluate 7*2*7*5 using properties of numbers. Name the property used in each step.
The simplified expression of 7 * 2 * 7 * 5 is 490
How to evaluate the expression?The expression is given as
7*2*7*5
Rewrite the expression properly
This is done as follows
7 * 2 * 7 * 5
The factors of the expression have different basis
i.e. Basis = 7 , 2 and 5
This means that we cannot apply the law of indices
Solving further, we have the following equation:
7 * 2 * 7 * 5 = 7 * 2 * 7 * 5
Rearrange the factors
So, we have
7 * 2 * 7 * 5 = 7 * 7 * 2 * 5
Evaluate the products of 7 and 7 in the above equation
So, we have
7 * 2 * 7 * 5 = 49 * 10
Finally, we have
7 * 2 * 7 * 5 = 490
Hence, the simplified expression of the expression given as 7 * 2 * 7 * 5 is 490
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The simplified expression of the given 7 x 2 x 7 x 5 will be; 490
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
The expression is given as;
7 x 2 x 7 x 5
Rewrite the expression properly as follows;
7 x 2 x 7 x 5
The factors of the expression have different basis that is;
Basis = 7 , 2 and 5
Thus we can't apply the law of indices
Solving further, we have the equation;
7 x 5 x 7 x 2 = 7 x 2 x 7 x 5
Rearrange the factors;
7 x 2 x 7 x 5 = 7 x 7 x 2 x 5
7 x 2 x 7 x 5 = 49 x 10
Finally, we have the following
7 x 2 x 7 x 5 = 490
Hence, the simplified expression of the given 7 x 2 x 7 x 5 will be; 490
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if a 95% confidence interval for the mean head circumference for adults, based on the results of measuring head circumference for 30 adults, is (21.42, 23.18) inches, what is the margin of error? inches.
The margin of error is 0.88.
What is a margin of error?
In a random survey sample, a margin of error is a statistical measurement that takes into account the discrepancy between actual and anticipated findings.
Here, we have
Lower confidence interval = 21.42
Upper confidence interval = 23.18
Now,
Sample mean(x) = (Lower confidence interval + Upper confidence interval)/2
x = (21.42 + 23.18)/2
x = 44.6/2
Sample mean (x) = 22.3
Now, we find the margin of error,
margin of error = Upper confidence interval - x
= 23.18 - 22.3
= 0.88
Hence, the margin of error is 0.88.
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The margin of error is 0.88.
What is a margin of error?In a random survey sample, a margin of error is a statistical measurement that takes into account the discrepancy between actual and anticipated findings.Here, we have
Lower confidence interval = 21.42Upper confidence interval = 23.18Now, calculate:
Sample mean(x) = (Lower confidence interval + Upper confidence interval)/2
x = (21.42 + 23.18)/2x = 44.6/2Sample mean (x) = 22.3Now, we find the margin of error:
margin of error = Upper confidence interval - x
= 23.18 - 22.3= 0.88Hence, the margin of error is 0.88.
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for every 1-kilometer increase in altitude, the temperature drops 7 degrees Celsius. Find the temperature change from a 5-kilometer altitude increase.
The temperature change from a 5 - kilometer altitude increase is 35 degrees.
It is given in the question that for every 1-kilometer increase in altitude, the temperature drops 7 degrees Celsius.
We have to find the temperature change from a 5-kilometer altitude increase.
As, for 1 km altitude increase, the temperature drops by 7 degrees, hence by using unitary method, we can say that,
For 5 km altitude increase, the temperature will decrease by 7*5 = 35 degrees.
Unitary Method
The unitary method is generally a way of finding out the solution of a problem by initially finding out the value of a single unit, and then finding out the essential value by multiplying the single unit value.
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What's the midpoint of line segment (5,10) , and (-3,6)?
Answer:
(1; 8)
Step-by-step explanation:
x = (5 + (-3))/2 = 1
y = (10 + 6) = 8
which one of these options is the best definition of extrapolation? group of answer choices fitting a line to data that is non-linear using a given y-value and a linear regression equation to predict an x-value. using a linear regression equation and any x-value to predict any y-value. using an x-value far from observed x values to predict a y value
Answer: Extrapolation ,from the above can be defined as using a linear regression equation and any x- value to predict any y-value.
Step-by-step explanation:
Extrapolation regression makes use of estimated regression equation to predict a new value y for specific X values not in the range of the sampled data used to estimate our regression equation
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You downloaded a video game to your computer. You have a 60-minute free block of time for the game. It
takes 5 minutes to set up the game and 7 minutes to play each level of the game. Write an inequality to
determine the number of levels you can play in 60 minutes. How many levels can you play for free? Write an Inequality
An inequality to determine the number of levels you can play in 60 minutes is 5 + 7l ≤60
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.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
Here, it is given that :
Time for setting up the game = 5 minutes
Time to play each level = 7 minutes
Let l represent the number of levels played.
So, Time to play l levels = 7l
So, b = 5+7l
Now we are required to Write an inequality to determine the number of levels you can play in 60 minutes.
So, the inequality becomes :
5 + 7l ≤60
Hence an inequality to determine the number of levels you can play in 60 minutes is 5 + 7l ≤60
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21. What are the modes of the following sets of numbers?
a. 3, 13, 6, 8, 10, 5, 6
b. 12, 0, 15, 15, 13, 19, 16, 13, 16, 16
Answer:
6 and 16
Step-by-step explanation:
→ Find the most recurring number in sequence A
6
→ Find the most recurring number in sequence B
16
Given a Figure whose points are A(4, 5), B(2, -1), C(0, 0), D(-4, -1).
What would be the image of that figure if it goes under a reflection across the x-axis, what is the coordinate
of A'?
A. A'(-4,-5)
B. A'(-4, 5)
C. A'(4, 5)
D. A'(4,-5)
Answer:
D
Step-by-step explanation:
(4,5) is 5 units above the x axis. So, D' will be 5 units below the x axis. This would be the point (4 -5)
Answer: The answer is D A (4,05)
(4,5) is 5 units above this x axis. because of that , D' will have 5 units below the x axis for this problem. therefore the point is (4 -5)
8. A jewelry artist is selling necklaces at an art fair. It costs $170 to rent a booth at the fair. The cost of
materials for each necklace is $3.50. The artist is selling the necklaces at $12 each. The inequality
12n> 170 +3.50n represents the situation in which the artist makes a profit.
a. Will the artist make a profit if he sells 15 necklaces? Show how you know.
b. Solve the inequality and explain what the solution means in regards to the jewelry artist.
By solving inequality, we can conclude that the artist will not make a profit if he sells 15 necklaces.
What is inequality?An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made. In mathematics, larger than symbol (>), less than symbol (<), less than or equal to a symbol (<), greater than or equal to a symbol (≥), less than or equal to a symbol (≤), and not equal to a symbol (≠).So, is the artist in profit if he sells 15 necklaces:
The cost to rent a booth is $170.The cost of making a necklace is $3.50.The selling price is $12.Inequality is 12n ≥ 170 +3.50n: (let n = 15)
12n ≤ 170 +3.50n12(15) ≤ 170 +3.50(15)180 ≤ 170 + 52.5180 < 222.5Therefore, by solving inequality, we can conclude that the artist will not make a profit if he sells 15 necklaces.
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The correct question is given below:
A jewelry artist is selling necklaces at an art fair. It costs $170 to rent a booth at the fair. The cost of materials for each necklace is $3.50. The artist is selling the necklaces at $12 each. The inequality 12n> 170 +3.50n represents the situation in which the artist makes a profit. Will the artist make a profit if he sells 15 necklaces? Show how you know.