The histograms below show the ages of dogs at four different shelters. For which set of data is the mean most likely greater than the median?
A bar graph has age on the x-axis and number of dogs on the y-axis. There is 1 dog that is 0 to 1 year of age; 4 dogs that are 2 to 3; 2 dogs that are 4 to 5; 0 dogs that are 6 to 7; 1 dog that is 8 to 9.
A bar graph has age on the x-axis and number of dogs on the y-axis. There are 0 dogs that are 0 to 1 year of age; 3 dogs that are 2 to 3; 4 dogs that are 4 to 5; 3 dogs that are 6 to 7; 0 dogs that are 8 to 9.
A bar graph has age on the x-axis and number of dogs on the y-axis. A bar graph has age on the x-axis and number of dogs on the y-axis. There are 0 dogs that are 0 to 1 year of age; 1 dog that is 2 to 3; 2 dogs that are 4 to 5; 4 dogs that are 6 to 7; 1 dog that is 8 to 9.
A bar graph has age on the x-axis and number of dogs on the y-axis. There are 2 dogs that are 0 to 1 year of age; 1 dog that is 2 to 3; 2 dogs that are 4 to 5; 1 dog that is 6 to 7; 2 dogs that are 8 to 9.
Answers
The set of data for which the mean is most likely greater than the median is the data given by first histogram.
How to identify skewed graph?A skewed distribution is a distribution having bias on one of the two sides (either left or right).
It is like leaning mountain on one side (left or right).
A left skewed graph have elongated tail on the left side of the main mountain like figure. The mountain like figure is after that elongated tail. It is also called negatively skewed graph.
This graph usually has mean < median < mode
A right skewed graph has elongated tail on the right side of the main mountain like figure. The mountain like figure is before that elongated tail. It is also called positively skewed graph. This graph usually has:
Mode < median < mean.
For this case, we can try to find the histogram which is right skewed because for right skewed graphs, the mean of the data is greater than the median.
For being right skewed, the histogram needs to be elongated on the right. The elongation on right means the perpendicular axis of the graph (the frequency) has lower and lower values in the right end of the graph.
So, the histogram, which has all values having approx lower frequencies on the right side than any other part of the histogram, has got its mean > median.
We're given these histograms:
Histogram 1:Age Frequency
0 - 1 years 1
2 - 3 years 4
4 - 5 years 2
6 - 7 years 0
8 - 9 years 1
Histogram 2:Age Frequency
0 - 1 years 0
2 - 3 years 3
4 - 5 years 4
6 - 7 years 3
8 - 9 years 0
Histogram 3:Age Frequency
0 - 1 years 0
2 - 3 years 1
4 - 5 years 2
6 - 7 years 4
8 - 9 years 1
Histogram 4:Age Frequency
0 - 1 years 2
2 - 3 years 1
4 - 5 years 4
6 - 7 years 1
8 - 9 years 2
The second and fourth histograms are symmetric, because of symmetric values on its either side of the mid value for 4-5 years old dogs' frequencies. Thus, they're not skewed.
The third histogram is negatively skewed because of high values on right side (the last values in the table belongs to bigger ages, and on the axis for age of dogs, by sign convention, the bigger ages will be on right to the smaller age values) than the smaller values, and smaller values are forming tail on left side. Thus, its negatively skewed distribution.
The first histogram has positively skewed distribution, since at the end, it has very small values and there is mountain like structure on the left side.
Thus, for this histogram, the median < mean is most likely to be happening. (we still use the word 'likely' since the data is not large enough to apply these approximations of mean and median and mode, as it works better for large data sets).
Thus, the set of data for which the mean is most likely greater than the median is the data given by first histogram.
The graph of the first histogram is attached below.
Learn more about skewed distribution here:
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Answer:
A. The first graph
Step-by-step explanation:
Got it right on an edge test
Have a nice day :)
Related Questions
The 8th term of a linear sequence is 18 and the 12th term is 26. Find the first term, the common difference and the 20th term
Answers
Answer:
see explanation
Step-by-step explanation:
the sequence is linear, that is arithmetic with nth term
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
given a₈ = 18 and a₁₂ = 26 , then
a₁ + 7d = 18 → (1)
a₁ + 11d = 26 → (2)
subtract (1) from (2) term by term to eliminate a₁
4d = 8 ( divide both sides by 4 )
d = 2
substitute d = 2 into (1) and solve for a₁
a₁ + 7(2) = 18
a₁ + 14 = 18 ( subtract 14 from both sides )
a₁ = 4
then
a₂₀ = 4 + (19 × 2) = 4 + 38 = 42
Ming was planning a trip to western smaoa be fore she was going she did some research and learned that the exchange rate is 6 tala for 2$ how many tala would she get if she exchanged 6$
Answers
Answer:
18 tala
Step-by-step explanation:
The exchange is proportional, so the number of tala Ming receives will be proportional to the number of dollars she exchanges.
x / ($6) = 6 tala / ($2)
__
Multiplying by $6, we have ...
x = (6 tala)($6/$2) = 18 tala
Ming would get 18 tala when exchanging $6.
PLEASE HELP
Find AB,. Round to the nearest tenth.
Answers
Answer:
11.6
Step-by-step explanation:
11.64 without rounding. since the 2nd decimal is below 5, we round down to 0. 11.60, or just 11.6 :) hope this helps!
what is the expression to (4×+3)+(-2×+4)
Answers
Answer:
4x(3-2)
Step-by-step explanation:
since in 2 groups, there are number 4 in common
Apply Distributive Law to achieve this.
The Pyramid of Menkaure is a square pyramid located in Giza. The pyramid has a height of about 215 feet, a slant height of about 274 feet, and a base side length of about 339 feet. After a windstorm, an architect was tasked with inspecting the outer surfaces of the pyramid for damage. How many square feet does the architect need to inspect? Type the correct answer in the box. Use numerals instead of words. The architect will need to inspect square feet
Answers
Answer:
The architect will need to inspect 185,772 square feet.
Step-by-step explanation:
The square feet the architect must inspect represents the lateral surface area of the square pyramid. Since the base of the pyramid is a regular polygon, a square, then the given formula can be used. Let P be the perimeter of the base and l be the slant height of 274 feet.
Find the perimeter of the base by multiplying the length of a side, 339 feet, by the number of sides of the base, 4.
So, the architect will need to inspect 185,772 square feet of the pyram
The total of 109327.5 feet² of the square area the architect needs to inspect.
What is a triangle?A triangle is a 3-sided shape that is occasionally referred to as a triangle. There are three sides and three angles in every triangle, some of which may be the same.
The sum of all three angles inside a triangle will be 180° and the area of a triangle is given as (1/2) × base × height.
There are many types of triangles such that right angle triangle, equilateral triangle, and much more.
A pyramid consists of 3 equal triangles given that the vertical height of a triangle is 215 feet, and the base is 339 feet.
Area of one triangle = (1/2) × base × height.
⇒ (1/2) × 339 × 215
⇒ 36442.5
Since in a pyramid, there are a total 3 triangles so
Total surface area = 3 × surface area of 1 triangle.
Total surface area = 3 × 36442.5 = 109327.5 hence correct answer will be 36442.5.
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Answers
Answer:
Answer:
47
Step-by-step explanation:
a)
a^2 + b^2 = c^2
33^2+33^2=c^2
2178=c^2
c=(nearest is 47)
b)
If you cut the square in half diagonally, it forms two right triangles with angle measures 90-45-45. You can use sin (opposite over hypotenuse) to find the length of the hypotenuse. sin (45) would be 33/(hypotenuse length). From a trig chart, you can find that sin (45) is 1/sqrt(2), meaning that 33/x = 1/sqrt(2). This means that x=33sqrt(2), which is around 47.
Step-by-step explanation:
Explaination:
This is bc -4 plus 4 equals 0
and on a grid if you go 4 to the right you will most definitely get to 0
The ratio of pencils to notebooks at a store is 5 to 3. Fill in the
The ratio of pencils to notebooks at a store is 5 to 3. Fill in the missing values to show the possible number of pencils and
notebooks.
Answers
Answer:
1st,15
2nd, 40
3rd, 36
Step-by-step explanation:
1. 5=25
3=? =3*25/5
=15
2. 3=25
5=? 5*25/3
=40
3. 5=60
3=? 3*60/5
=36
Find the missing side lengths. Leave your answers as radicals in simplest form.
Answers
Answer:
B x = 3, y= 3
Step-by-step explanation:
Trigonometric ratios
[tex]\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}[/tex]
where:
[tex]\theta[/tex] is the angleO is the side opposite the angleA is the side adjacent the angleH is the hypotenuse (the side opposite the right angle)Given:
[tex]\theta[/tex] = 45°O = [tex]x[/tex]A = [tex]y[/tex]H = [tex]3\sqrt{2}[/tex][tex]\implies \sin(45^{\circ})=\dfrac{x}{3\sqrt{2}}[/tex]
[tex]\implies x=3\sqrt{2}\sin(45^{\circ})[/tex]
[tex]\implies x=3\sqrt{2} \cdot \dfrac{\sqrt{2}}{2}[/tex]
[tex]\implies x=\dfrac{3\sqrt{2} \sqrt{2}}{2}[/tex]
[tex]\implies x=\dfrac{3 \cdot 2}{2}=3[/tex]
[tex]\implies \cos(45^{\circ})=\dfrac{y}{3\sqrt{2}}[/tex]
[tex]\implies y=3\sqrt{2}\cos(45^{\circ})[/tex]
[tex]\implies y=3\sqrt{2} \cdot \dfrac{\sqrt{2}}{2}[/tex]
[tex]\implies y=\dfrac{3\sqrt{2} \sqrt{2}}{2}[/tex]
[tex]\implies y=\dfrac{3 \cdot 2}{2}=3[/tex]
Find the perimeter of the triangle .
Answers
Answer:
P = 9x + 22
Step-by-step explanation:
Perimeter = sum of all sides
P = (3x + 11) + (3x + 11) + (3x)
P = 9x + 22
I hope this helps! God bless
name the 3d shape formed by each net.
Answers
Answer:
1. Rectangular Prism
2. Cylinder
3. Triangular Pyramid
4. Triangular Prism
5. Cone
6 Rectangular Pyramid
A certain circle can be represented by the following equation. x^2+y^2+16x-14y+49=0x 2 +y 2 +16x−14y+49=0x, squared, plus, y, squared, plus, 16, x, minus, 14, y, plus, 49, equals, 0 What is the center of this circle ? ((left parenthesis ,,comma ))right parenthesis What is the radius of this circle ? units
Answers
Answer:
center = (-8, 7)
radius = 8 units
Step-by-step explanation:
Equation of a circle: [tex](x-h)^2+(y-k)^2=r^2[/tex]
(where (h, k) is the center of the circle and r is the radius)
Rewrite the given equation:
[tex]x^2+y^2+16x-14y+49=0[/tex]
[tex]\implies x^2+16x+y^2-14y+49=0[/tex]
[tex]\implies (x+8)^2-64+(y-7)^2-49+49=0[/tex]
[tex]\implies (x+8)^2+(y-7)^2=64[/tex]
Therefore:
center = (-8, 7)radius: [tex]r^2=64 \implies r=\sqrt{64} =8[/tex]Answer:
The circle is centered at (8,0)
The circle has a radius of 10 units.
Step-by-step explanation:
trust
Which picture shows the inverse, f −1, of the function shown?
Domain: 8, 10, 12. Range: 6, 9, 3. 8 goes to 6; 10 goes to 9; 12 goes to 3.
CLEAR CHECK
Inverse of f. Domain: 8, 10, 12. Range: negative 6, negative 9, negative 3. 8 goes to negative 6; 10 goes to negative 9; 12 goes to negative 3.
Inverse of f. Domain: 6, 9, 3. Range: one-eighth, one-tenth, one-twelfth. 6 goes to one-eighth, 9 goes to one-tenth; 3 goes to one-twelfth.
Inverse of f. Domain: 8, 10, 12. Range: one-sixth, one-ninth, one-third. 8 goes to one-sixth; 10 goes to one-ninth; 12 goes to one-third.
Inverse of f. Domain: 6, 9, 3. Range: 8, 10, 12. 6 goes to 8; 9 goes to 10; 3 goes to 12.
Answers
Answer:
(d) Inverse of f. Domain: 6, 9, 3. Range: 8, 10, 12. 6 goes to 8; 9 goes to 10; 3 goes to 12.
Step-by-step explanation:
Apparently function f is defined by the ordered pairs (8, 6), (10, 9), (12, 3).
The inverse function will be defined by the ordered pairs with the input and output reversed:
(6, 8), (10, 9), (3, 12)
This seems to be described by the last answer choice.
Darlene picked 7 apples. Juan picked 4 times as many as Darlene. How many apples did Juan pick?
What equation represents this situation?
Group of answer choices
7*4=a
7-4=a
a-7=4
a*4=7
Good luck
Answers
Answer:
ok, i think this would be.....a.
Step-by-step explanation: so i know 7x4=28 so 7*4=a makes sense cause a = 28
have a nice day
the equation of a line is shown
6x-3y=5
a dilation c entered at the origin with a scale factor of 6 is applied to this line
A: what is the slope of the line after dilation
B: what is the value of the y-intercept of the line after the dilation
Answers
Answer: See below
Step-by-step explanation:
Let us write the equation of the given line in standard form:
[tex]6 x-3 y=5 \quad \Rightarrow \quad y=2 x-\frac{5}{3}[/tex]
A. The line moves away from the origin by a scale factor of 6, but its inclination still remains the same. Therefore, after any dilation, the slope of that line never changes.
Thus, the slope of the given line after dilation will be the same as the original slope, which is m = 2.
B. The x-intercept of the line before dilation will be given by substituting x = 0 in the given equation as shown below:
[tex]y=2(0)-\frac{5}{3}=-\frac{5}{3}[/tex]
Now, the y-intercept of the line after the dilation will be given by:
[tex]6\left(-\frac{5}{3}\right)=-10[/tex]
A rancher wants to fence in an area of 1000000 square feet in a rectangular field and then divide it in half with a fence down the middle, parallel to one side. What is the shortest length of fence that the rancher can use
Answers
The shortest length of the fence used by the rancher in a rectangular field of 1000000 square feet is 4899 ft.
What is the area of a rectangle?The area of a rectangle is a region enclosed in four corners where two opposite sides are equal. The area of the rectangle is mathematically expressed as:
Area of a rectangle = length(x) × breath(y)
1000000 sq.ft = (x) × (y) ---- (1)
However, to determine the fencing, we have:
Length of fencing = 2x + 2y
since the rectangle has four sides and opposite sides are equalSuppose we use the x-direction to estimate the region where the fencing is located, we have:
Length of fencing = 2x + 2y + x
Length of fencing = 3x + 2y ---- (2)
From equation (1), make (y) the subject of the formula and replace the value of y with equation (2)
The Length of fencing is:
[tex]\mathbf{L = 3x - 2( \dfrac{1000000}{x})}[/tex]
[tex]\mathbf{\dfrac{dL}{dx} = 3 - \dfrac{2000000}{x^2} = 0}[/tex]
[tex]\mathbf{ x^2= \dfrac{2000000}{3} }[/tex]
[tex]\mathbf{ x= \dfrac{1000\sqrt{2}}{\sqrt{3}} }[/tex]
[tex]\mathbf{x = \dfrac{1000 \sqrt{6}}{3}}[/tex]
Now, if we replace the value with equation (1), then y will be:
[tex]\mathbf{y = \dfrac{1000000}{\dfrac{1000 \sqrt{6}}{3}} }\\ \\ \\ \\ \mathbf{y = \dfrac{3000 }{\sqrt{6}}}[/tex]
[tex]\mathbf{x =500\sqrt{6}}[/tex]
Now, the shortest length of the fencing can be computed by using the equation (2):
L = 3x + 2y
[tex]\mathbf{L = 3( \dfrac{1000 \sqrt{6}}{3}) + 2(500 \sqrt{6})}[/tex]
[tex]\mathbf{L =1000 \sqrt{6} + 1000 \sqrt{6}}[/tex]
[tex]\mathbf{L =2000 \sqrt{6} }[/tex]
[tex]\mathbf{L \simeq 4899 \ ft}[/tex]
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Answers
Answer:
C
Step-by-step explanation:
It cannot be D and A and B are the same
Answer:
90 degrees around the origin
Step-by-step explanation:
When you rotate the first time it is 90 degrees
When you rotate two times it is 180 degrees
When you rotate three times it is 270 degrees
Hope it helps:)
Pls and help me with this !!!
Answers
Answer:
#20 is -20
#21 is -3
#22 is 36
Kavya is surveying how seventh-grade students get to school. In her first-
period class, 10 out of 32 students ride the bus to school. There are 160
students in seventh grade. Based on her survey, how many seventh-grade
students can she predict ride the bus to school?
• A. 40
B. 138
• C. 50
• D. 512
Please help I’ll give brainlist to the first person to answer and the answer is correct please help!! Fast hurry!!!
Answers
160:32=5
10 x 5 =50
There are 50 seventh-grade students who can she predict riding the bus to school.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
The unitary method is a method by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.
We are given that first-period class, 10 out of 32 students ride the bus to school. There are 160 students in seventh grade.
Therefore, we have;
160/32=5
10 x 5 =50
Thus, the answer is 50
Learn more about the unitary method, please visit the link given below;
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8. (3x-5) mZS = 0 MZR = Р T con A (117 Bux+5)* S
Answers
Answer:
95°, 110°
Step-by-step explanation:
Since we're dealing with a cyclic quadrilateral ,
m<T + m<R 180°
7y + 11y = 180°
18y = 180°
y = 10°
Also,
m<S + m<U = 180°
3x+5+3x-5= 180°
6x = 180°
x = 30°
m<S = 3x+5 = 3(30)+5
= 95°
m<R = 11y = 11(10)
= 110°
Given -
m∠R = (11y)°m∠S = (3x + 5)°m∠T = (7y)°m∠U = (3x - 5)°To find -
m∠Rm∠S(nullifying x and y)
Explanation -
As we know this is a cyclic quadrilateral and it's either pair of the opposite angles sum up to 180°.
Therefore,
m∠S + m∠U = 180° ---(1)
m∠R + m∠T = 180° ---(2)
Solution -
Substituting the values of the measure of angles in (1)
➜ m∠S + m∠U = 180°
➜ (3x + 5)° + (3x - 5)° = 180°
➜ 6x = 180°
➜ x = 180/6
➜ x = 30
Therefore, m∠S = (3x + 5)° = {3(30)+5}° = (90+5)°
m∠S = 95°
Substituting the values of the measure of angles in (2)
➜ m∠R + m∠T = 180°
➜ (11y)° + (7y)° = 180°
➜ 18y = 180°
➜ y = 180/18
➜ y = 10
Therefore, m∠R = (11y)° = (11×10)° = 110°
Find an ordered pair that is a solution to the equation.
Answers
Answer:
[tex](x,y) = (4,1)[/tex]
Step-by-step explanation:
[tex]-4+5\cdot 1 = 5-4 =1[/tex]
Answer:
(2, 3/5)
Step-by-step explanation:
Step 1. Rewrite as slope-intercept form, y = mx + b (OPTIONAL)
-x + 5y = 1
5y = x + 1
y = 1/5x + 1/5
Step 2. Pick an x value, then sub for y
x = 2
y = 1/5(2) + 1/5
y = 2/5 + 1/5
y = 3/5
Ordered pair: (2, 3/5)
God bless!
Our sense of smell is responsible for ___ of our overall chocolate tasting experience. Group of answer choices 10% 30% 50% 70%
Answers
Answer:
70%
Step-by-step explanation:
Our sense of smell is responsible for 70% of our overall chocolate tasting experience.
y=7x+5, y=2x+5
Solving systems
Answers
Answer:
x = 0, y = 5
Step-by-step explanation:
y = 7x + 5
=> x = (y-5) / 7
y = 2x + 5 = 2 *(y-5) /7 + 5
=> (y - 5) / 2 = ( y - 5) / 7
=> y =5 since only 0 / 2 = 0 / 7
=> x = (y -5) / 7 = 0 / 7 = 0
helpppppppppppppppppppllssssssssssssssssss
Answers
The graph of a function is a transformation of the graph of its parent function in which the graph is
vertically stretched by a factor of 2;
shifted left 3 units; and
shifted up 2 units.
write an equation for the function.
Answers
Answer:
f(x) = 2(x+3)+2
Step-by-step explanation:
What is the solution to the system of equation?
Answers
Answer:
(0, -4)
Step-by-step explanation:
The solution to the system is the point that is on both lines. It is where the lines intersect (cross). They intersect at the point (0, -4)
A school has 24 teachers and
600 students
a. Write the ratio of teachers to students. Simplify it to its lowest terms.
b. To keep the same ratio of teachers to students, how many teachers should the school hire if the number of students increase to 800
Please do NOT answer with links!
Answers
Answer: a. 24:600
b. 53
Step-by-step explanation:
First simplify:
24:600
6:150
2:30
1:15
Owen is going on a multi-day hike up a large mountain. He wants to know what clothes he should bring for the higher elevation as he hikes. What clothes should Owen bring?
Answers
Answer:
Owen should wear thick, layered clothing thats will keep him warm
Example:Jackets,sweaters,heavy socks, gloves, benies, Balaclavas...ect
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Heavier Clothes, Since, The higher elevation will have cooler tem
Groceries R Us is selling 8 apples for $2.80.
Food Galore is selling 6 apples for $2.16.
Shop Here is selling 4 apples for $1.42.
Find their unit rates. Which store has the best deal?
Answers
Answer:
Groceries R Us
Step-by-step explanation:
i dont know how to explain lol
The diagram shows a straight line ABCD.
A is the point (−260,480) D is the point (620,−180)
The line cuts the y-axis at B and the x-axis at C.
Answers
Answer:
B (0, 285 ) , C (380, 0 )
Step-by-step explanation:
the first step is to obtain the equation of the line in slope- intercept form
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = A(- 260, 480 ) and (x₂, y₂ ) = D (620, - 180 )
m = [tex]\frac{-180-480}{620-(-260)}[/tex] = [tex]\frac{-660}{620+260}[/tex] = [tex]\frac{-660}{880}[/tex] = - [tex]\frac{66}{88}[/tex] = - 0.75 , then
y = - 0.75x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equatio
using (620, - 180 ) , then
- 180 = - 465 + c ⇒ c = - 180 + 465 = 285
So y- intercept is B (0, 285 )
y = - 0.75x + 285 ← equation of line
to find the x- intercept , let y = 0 in the equation and solve for x
0 = - 0.75 + 285 ( subtract 285 from both sides )
- 285 = - 0.75x ( divide both sides by - 0.75 )
380 = x
x- intercept is C (380, 0 )
Difference:
x values
260 + 620 = 880
y values
480 + 180 = 660
Gradient = change in y/ change in x
Or
gradient = rise/run
= 660/880
= 3/4
= 0.75
We've got a negative slope - gradient must be negative
y = mx + c
y = - 0.75x + c
To find the y-intercept (c), which on the diagram is point B - you substitute one of the coordinates into the equation y = - 0.75x + c.
You use - point A or D - it don't matter which
I'll pick D - (620,−180)
y= -0.75x + c
-180 = - 0.75 x 620 + c
-180 = - 465 + c
+465
285= c
Thus, the equation is:
y = - 0.75x + 285
or
y = - 3/4x + 285
Where point B is (0,285) and C is (380,0)
To find:
B substitute x = 0 into the equation
(y= - 3/4 x 0 + 285)
C substitute y = 0 in the equation
0 = - 3/4x + 285
-285
- 285 = - 0.75x
÷ - 0.75
380 = x
( I converted 3/4 to 0.75 to make things clearer)
Hope this helps!
20 points!!! please help
Do 13, 14, 15, and 16
Answers
Answer:
13. 360 14. 1080 15. x=53 16. x=135
Step-by-step explanation:
Equation: (n-2)*180
For 13. all angles in a a quadrilateral add up to 360
For 14. 8 sides-2=6. 180*6=1080 degrees
For 15. 15+155+137=307. 360-307=53. x=53 degrees
For 16. 6 sides-2=4. 4*180=720. 90*2=180. 720-180=540. 540/4=135.
x=135