Answer:
8) - 8z^3 - 3z^2 - 2z + 13
9) g^3 - 3g^2 + 3g + 6
10) (14n + 21) - (8n + 7) = 6n + 14
1.
A 50 foot rope is stretched tight from the roof of a building to a spot 20 feet from the base of the
building. How tall is the building? Round your answer to TWO decimal places.
The required height of the building is approximately 45.82 feet.
Given that, a 50-foot rope is stretched from a building's top to a point 20 feet from the building's base.
We can use the Pythagorean theorem to solve the question.
Let h be the height of the building.
Pythagoras's theorem states that in a right-angled triangle, "the square of one side is equal to the sum of the squares of the other two sides".
Then, we have:
h² + 20² = 50²
Simplifying and solving for h, we get:
h² = 50² - 20²
h² = 2500 - 400
h² = 2100
h = √(2100)
h ≈ 45.82
Therefore, the height of the building is approximately 45.82 feet.
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more equation things
For the given linear equation y = (1/4)*x + 5/4.
(1, 1.5) is a solution.(12, 4) is not a solution.The x-intercept is (-16/5, 0).Are these points solutions of the linear equation?Here we have the linear equation:
y = (1/4)*x + 5/4.
to check if (1, 1.5) is a solution we need to evaluate this in x = 1 and see if we get 1.5.
y = (1/4)*1 + 5/4
y = 6/4 = 3/2 = 1.5
Then (1, 1.5) is a solution.
For the second point we evaluate in x = 12.
y = (1/4)*12 + 5/4
y = 3 + 5/4 = 4.25
So (12, 4) is not a solution.
Finally, to find the x-intercept, we evaluate in y = 0.
0 = (1/4)*x + 5/4
-4/5 = (1/4)*x
4*(-4/5) = x
-16/5 = x
The x-intercept is (-16/5, 0).
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By using the trapezoidal rule with 5 ordinates, approximate [sin(x²+1) dx to 4 decimal places.
Using the trapezoidal rule with 5 ordinates, we approximate the integral [sin(x²+1) dx] over the interval [0,1] to be 0.5047 to 4 decimal places.
To approximate the integral [sin(x²+1) dx] using the trapezoidal rule with 5 ordinates, we can use the following formula:
∫[a,b]f(x)dx ≈ [(b-a)/2n][f(a) + 2f(a+h) + 2f(a+2h) + 2f(a+3h) + 2f(a+4h) + f(b)]
where n is the number of ordinates (in this case, n = 5), h = (b-a)/n is the interval width, and f(x) = sin(x²+1).
First, we need to find the interval [a,b] over which we want to integrate. Since no interval is given in the problem statement, we'll assume that we want to integrate over the interval [0,1].
Therefore, a = 0 and b = 1.
Next, we need to find h:
h = (b-a)/n = (1-0)/5 = 0.2
Now, we can apply the trapezoidal rule formula:
∫[0,1]sin(x²+1)dx ≈ [(1-0)/(2*5)][sin(0²+1) + 2sin(0.2²+1) + 2sin(0.4²+1) + 2sin(0.6²+1) + 2sin(0.8²+1) + sin(1²+1)]
≈ (1/10)[sin(1) + 2sin(0.05²+1) + 2sin(0.15²+1) + 2sin(0.35²+1) + 2sin(0.65²+1) + sin(2)]
≈ (1/10)[0.8415 + 2sin(1.0025) + 2sin(1.0225) + 2sin(1.1225) + 2sin(1.4225) + 1.5794]
≈ 0.5047
Therefore, using the trapezoidal rule with 5 ordinates, we approximate the integral [sin(x²+1) dx] over the interval [0,1] to be 0.5047 to 4 decimal places.
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Need help asap, please and thank you
If the population in the year 2007 is 111.3 million, then the population in the year 2044 will be 148.37 million.
In order to find the population in the year 2044, we use the population growth formula; which is : P = P₀ × (1 + r)ⁿ;
where P = future population, P₀ = initial population, r = annual growth rate, and n = number of years;
Substituting the values,
We get;
⇒ P = (111.3 million) × (1 + 0.0078)²⁰⁴⁴⁻²⁰⁰⁷;
Simplifying this expression,
We get;
⇒ P = (111.3 million) × (1.0078)³⁷;
⇒ P ≈ 148.37 million;
Therefore, the population in the year 2044 is estimated to be approximately 148.37 million.
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what is the resultant displacement of 6m north 8m east and 10m north west?
The resultant displacement is approximately 13.071m north and 8m east.
To find the resultant displacement, we need to combine the given displacements in a vector-like manner.
Let's break down the displacements into their components and then add them up.
The first displacement is 6m north.
Since it is purely in the north direction, its components would be 6m in the north direction (along the y-axis) and 0m in the east direction (along the x-axis).
The second displacement is 8m east.
As it is purely in the east direction, its components would be 0m in the north direction and 8m in the east direction.
The third displacement is 10m northwest.
To find its components, we can split it into two perpendicular directions: north and west.
The northwest direction can be thought of as the combination of north and west, each with a magnitude of 10m.
Since they are perpendicular, we can use the Pythagorean theorem to find the components.
The north component would be 10m multiplied by the cosine of 45 degrees (45 degrees because northwest is halfway between north and west).
Similarly, the west component would be 10m multiplied by the sine of 45 degrees.
Calculating the components:
North component = 10m [tex]\times[/tex] cos(45°) = 10m [tex]\times[/tex] 0.7071 ≈ 7.071m
West component = 10m [tex]\times[/tex] sin(45°) = 10m [tex]\times[/tex] 0.7071 ≈ 7.071m
Now, let's add up the components:
North component: 6m (from the first displacement) + 7.071m (from the third displacement) = 13.071m north
East component: 8m (from the second displacement).
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i need the answer for this asap Please!
The system of inequalities for the graph is
a) y < 3x - 4
b) y = x + 3
Given data ,
Let the inequality equations be represented as A and B
where
Let the first point be P ( 0 , 3 )
Let the second point be Q ( -3 , 0 )
Now , the slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )
m = ( 3 - 0 ) / ( 0 + 3 )
m = 1
Now , equation of line is y - y₁ = m ( x - x₁ )
y - 0 = 1 ( x + 3 )
y = x + 3
And , the second equation is
Let the first point be R ( 0 , -4 )
Let the second point be S ( 2 , 2 )
Now , the slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )
m = ( -4 - 2 ) / ( 0 - 2 )
m = -6/-2
m = 3
Now , equation of line is y - y₁ = m ( x - x₁ )
y - 2 = 3 ( x - 2 )
Adding 2 on both sides , we get
y = 3x - 4
Since , it is a dotted line ,
y < 3x - 4
And , the solution to the inequality is point of intersection
where A ( 3.5 , 6.5 ) is the solution
Hence , the inequality equations are solved and A ( 3.5 , 6.5 ) is the solution
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Help My Daughter we not understanding?
Representation of a number in three different ways:
133: [12 tens and 13 ones], [13 tens and 3 ones], [1 hundred, 3 tens and 3 ones]
678: [67 tens and 8 ones], [60 tens and 78 ones], [6 hundreds, 7 tens and 8 ones]
877: [80 tens and 77 ones], [87 tens and 7 ones], [8 hundred, 7 tens and 7 ones]
543: [54 tens and 3 ones], [50 tens and 43 ones], [5 hundreds, 4 tens and 3 ones]
453: [45 tens and 3 ones], [40 tens and 53 ones], [4 hundreds, 5 tens and 3 ones]
341: [30 tens and 41 ones], [34 tens and one], [3 hundreds,4 tens and one]
555: [50 tens and 55 ones], [55 tens and 5 ones], [5 hundreds, 5 tens and 5 ones]
485: [48 tens and 5 ones], [40 tens and 85 ones], [4 hundreds, 8 tens and 5 ones]
789: [78 tens and 9 ones], [70 tens and 89 ones], [7hundreds, 8 tens and 9 ones]
864: [86 tens and 4 ones], [80 tens and 64 ones], [8 hundreds, 6 tens and 4 ones]
652: [65 tens and 2 ones], [60 tens and 52 ones], [6hundreds, 5 tens and 2 ones]
Here given an example to write a particular number in different representations.
13 tens and 12 ones = 13*10 + 12*1 = 130 + 12 = 142.
14 tens and 2 ones = 14*10 + 2*1 = 140 + 2 = 142.
1 hundred, 4 tens and 2 ones = 1*100 + 4*10 + 2*1 = 100 + 40 + 2 = 142.
So three representations are of number 142.
Rest blanks should be filled in same manner taking different numbers for each rows and three columns of each row should be filled with three different representation of that assumed numbers.
Representations for some numbers:
133: [12 tens and 13 ones], [13 tens and 3 ones], [1 hundred, 3 tens and 3 ones]
678: [67 tens and 8 ones], [60 tens and 78 ones], [6 hundreds, 7 tens and 8 ones]
877: [80 tens and 77 ones], [87 tens and 7 ones], [8 hundred, 7 tens and 7 ones]
543: [54 tens and 3 ones], [50 tens and 43 ones], [5 hundreds, 4 tens and 3 ones]
453: [45 tens and 3 ones], [40 tens and 53 ones], [4 hundreds, 5 tens and 3 ones]
341: [30 tens and 41 ones], [34 tens and one], [3 hundreds,4 tens and one]
555: [50 tens and 55 ones], [55 tens and 5 ones], [5 hundreds, 5 tens and 5 ones]
485: [48 tens and 5 ones], [40 tens and 85 ones], [4 hundreds, 8 tens and 5 ones]
789: [78 tens and 9 ones], [70 tens and 89 ones], [7hundreds, 8 tens and 9 ones]
864: [86 tens and 4 ones], [80 tens and 64 ones], [8 hundreds, 6 tens and 4 ones]
652: [65 tens and 2 ones], [60 tens and 52 ones], [6hundreds, 5 tens and 2 ones]
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Mario was given the following enlargement.
A figure with top measurement A and side measurement 6 centimeters. Side A corresponds to a side with length 24 centimeters. A side with length 6 centimeters corresponds with a side with length 12 centimeters.
Figures not drawn to scale.
What is the length of side A, in centimeters?
12
15
24
33
The length of side A, in centimeters is 12. Option A
How to determine the valueTo determine the value, we need to know that;
When two sides of a figure are equal in length, that is in (measure).
For example in a square all sides are equal in length so they're all corresponding measurements.
From the information given, we have that;
Side A corresponds to 24 cm
Length 6 cm corresponds to Length 12 cm
The given parameters can be represented mathematically as;
A/24 = 6/12
cross multiply the values, we have;
12A = 6(24)
Multiply the values
12A = 144
Divide by the coefficient, we have;
A = 12 centimeters
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The correct answer is, A (aka 12)
Can someone pls explain
163. The distance between A(-5, 6) and B(5, -5) is: AB ≈ 14.9 units
164. Applying the Pythagorean theorem, we have: Diagonal ≈ 21.2 ft.
165. Marissa's final answer is wrong. It should be, c = √676 = 26 units.
166. Missing side = 29 ft.
What is the Pythagorean Theorem?The Pythagorean theorem states that c² = a² + b², given that a and b are shorter legs and c is the hypotenuse or longest leg of the right triangle.
163. The distance between A(-5, 6) and B(5, -5):
AB = √[(5−(−5))² + (−5−6)²]
AB = √221
AB ≈ 14.9 units
164. Apply the Pythagorean theorem to find the diagonal:
Diagonal = √(15² + 15²) ≈ 21.2 ft.
165. The answer Marissa got is wrong. The final answer which is the square root of 676 is:
c = √676 = 26 units.
166. Missing side = √(20² + 21²) = 29 ft.
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what do you add to get the pattern 1, 8, 15, 22, 29 36, 43
Answer:
7
Step-by-step explanation:
Finding the common difference of an arithmetic sequence is easy peasy lemon squeezy. All you have to do is take any term and subtract it from the next one. For instance, if you take 1 and subtract it from 8, you get 7. If you take 8 and subtract it from 15, you get 7 again. You can do this for any pair of terms and you will always get 7. That's the common difference of the sequence 1, 8, 15, 22, 29, 36, 43. It means that you just add 7 to each term to get the next one. Isn't that neat?
Find the range of the number of points scored.
Range: – =
answer is 56, 41, 15
HELP PLEASE PHOTO INCLUDED
Answer:
Eat that cookie and you will not regret about it
Find the 15th term of the geometric sequence 2,6,18,...
Answer:
In a geometric sequence, each term is found by multiplying the previous term by a constant value called the common ratio (r).
In this case, the first term (a₁) is 2, and the common ratio (r) can be found by dividing any term by its preceding term. Let's calculate it:
r = 6 / 2 = 3
Now, to find the 15th term (a₅₊₁₋₅), we can use the formula:
aₙ = a₁ * r^(n-1)
Substituting the values, we have:
a₁ = 2
r = 3
n = 15
a₁₅ = 2 * 3^(15-1)
Calculating the exponent first:
3^(15-1) = 3^14 = 4782969
Now, substituting this value back into the formula:
a₁₅ = 2 * 4782969
a₁₅ = 9565938
Therefore, the 15th term of the geometric sequence 2, 6, 18, ... is 9565938.
Step-by-step explanation:
879 divided by 8 with remainder as fraction
someone please answer this its confusing me
Select the correct answer. Consider this function. Which graph represents the inverse of function f? f(x)= x+4
The inverse of the function f(x) = x + 4 is given as f⁻¹(x) = x - 4
What is inverse of a function?An inverse function or an anti function is defined as a function, which can reverse into another function. In simple words, if any function “f” takes x to y then, the inverse of “f” will take y to x. If the function is denoted by ‘f’ or ‘F’, then the inverse function is denoted by f-1 or F-1.
In this problem, the function given is f(x) = x + 4;
We can find the inverse of the function as;
y = x + 4;
Let's switch the variables by replacing x as y and y as x;
x = y + 4
Solving for y;
y = x - 4
f⁻¹(x) = x - 4
The graph of the function is attached below
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Roughly how much more does auto insurance cost for a 16 year old compared to a middle aged (40-50 year old) driver
A 16-year-old on their own policy pays on average $4,000 more per year than a 50-year-old would have to pay
The cost of insuranceAuto insurance costs vary significantly depending on factors such as location, vehicle type, and driving history. However, on average, a 16-year-old driver can expect to pay significantly more for auto insurance compared to a middle-aged driver (40-50 years old).
The exact amount varies, but it's not uncommon for a 16-year-old driver to pay two to three times more for auto insurance than a middle-aged driver. This is mainly because younger drivers are considered riskier due to their inexperience and higher likelihood of being involved in accidents.
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Real World Scenario: Sara and Kim are both three years old. Both have recently talked to their parents about doing chores around the house to earn some money. Both Sara and Kim's parents have agreed to start giving them a constant allowance every week. Sara currently has $1 in her piggy bank. Her parents have agreed to give her $.60 per week for doing her chores. Kim currently has $2.20 in her piggy bank. Her parents have greed to give her $.20 per week for doing her chores.
What equation and graph help support scenario?
The equation that represents the amount of money in Sara's piggy bank is y = 0.6x + 1 and the equation that represents the amount of money in Kim's piggy bank is y = 0.2x + 2.2.
The equation that represents the amount of money in Sara's piggy bank over time can be written as
Y = 0.6x + 1
Where Y represents the total amount of money in Sara's piggy bank and x represents the number of weeks.
Similarly, the equation that represents the amount of money in Kim's piggy bank over time can be written as
Y = 0.2x + 2.2
Where Y represents the total amount of money in Kim's piggy bank and x represents the number of weeks.
To visualize these equations, we can create a graph where the x-axis represents the number of weeks and the y-axis represents the amount of money in the piggy bank. We can plot the points for each week and draw a line connecting them. The resulting graph will show the trend of the amount of money in each piggy bank over time.
Here is a graph that represents the scenario
In the graph, the red line represents the amount of money in Sara's piggy bank and the blue line represents the amount of money in Kim's piggy bank. As we can see, Sara's piggy bank grows faster than Kim's piggy bank due to the higher allowance she receives for doing her chores.
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If ARSU-AVST, then the triangles are
similar by:
Answer:
AA sim post
Step-by-step explanation:
They DO have equal (similar) angles.....but they do not have equal sides
Question 1b Identify the amount in this statement. 6 is 30% of 20. The amount = The solution is
The amount in this statement, 6 is 30% of 20 is 6.
The amount in the statement "6 is 30% of 20" is 6.
This statement means that if we take 30% of 20, we get 6.
In other words, the amount 6 is 30% of 20.
We can also verify this by calculating 30% of 20:
30% of 20
= (30/100) × 20
= 0.3 × 20
= 6
Hence, the amount in this statement is 6.
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In a class of 26 students, 15 play an instrument and 5 play a sport. There are 3 students who play an instrument and also play a sport. What is the probability that a student chosen randomly from the class plays a sport and an instrument?
Answer:
3:26
Step-by-step explanation:
.
Peter set off from Town A at 10 am, driving at an average speed of 84 km/h. He reached
Town B at 2 pm. If William set off 1 hour 25 minutes earlier than Peter and took the
same route at an average speed of 70 km/h, at what time would William reach Town B?
Peter left Town A around 10 a.m., traveling at an average speed of 84 km/h. William would reach Town B at 1:23 PM.
Firstly, we need to find the distance between Town A and Town B which can be calculated by calculating the distance travelled by Peter
Time taken by Peter = 2PM - 10AM
= 4 hrs
Speed of Peter = 84 km/h
Distance travelled by Peter = speed × time
= 84 × 4
= 336 km
So, the distance between Town A and Town B = distance travelled by Peter = 336 km.
Now, we will calculate time taken by William.
Speed of William = 70 km / hr
Distance travelled by William = distance between Town A and town B = 336 km
Time taken by William = distance / speed
= 336 / 70 hr
= 4.8 hr
This can b converted into hrs and minutes
4.8 hr = 4 hr + 0.8 × 60
= 4 hr 48 mins
Time William took off = 10 AM - 1hr 25 mins
= 8:35 AM
Now, we will calculate the time William would reach town B.
Time = 8:35 + 4hr 48 mins
= 1:23 PM
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On the map, the grocery store is 2 inches away from the library. The actual distance is 1.5 miles. The same map shows that the movie theater is 20 inches from the school.
What is the actual distance from the movie theater to the school, rounded to the nearest mile?
A: 15
B:27
C:30
D:60
The actual distance from the movie theater to the school is given as follows:
A. 15 miles.
How to calculate the actual distance?The actual distance from the movie theater to the school is obtained applying the proportions in the context of the problem.
On the map, the grocery store is 2 inches away from the library. The actual distance is 1.5 miles, hence the scale factor is of:
2 inches = 1.5 miles
1 inch = 0.75 miles.
The same map shows that the movie theater is 20 inches from the school, hence the actual distance is given as follows:
20 x 0.75 = 15 miles.
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What is the instantaneous rate of change at x=2 for the function
f(x)= 2x - 5
The instantaneous rate of change at x = 2 is equal to the derivative, which is 2.
How to solve for the rate of changeThe derivative of f(x) = 2x - 5 with respect to x can be found by applying the power rule of differentiation, which states that the derivative of x^n is n*x^(n-1).
Taking the derivative of f(x) = 2x - 5:
f'(x) = 2 * (d/dx)(x) - (d/dx)(5)
= 2 * 1 - 0
= 2.
The derivative of f(x) with respect to x is a constant, 2, indicating that the function has a constant slope.
Therefore, the instantaneous rate of change at x = 2 is equal to the derivative, which is 2.
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XZ.P Point P(-7, 2) is mapped onto P¹ (3, -11) by the reflection y=mx+c. find the values of the constants m and c.
The values of the constants m and c include the following:
m = -1.3
c = 7.1
What is the slope-intercept form?In Mathematics and Geometry, the slope-intercept form of the equation of a straight line is given by this mathematical equation;
y = mx + c
Where:
m represent the slope or rate of change.x and y are the points.c represent the y-intercept or initial value.Since the point P(-7, 2) is mapped onto P' (3, -11) by the reflection y = mx + c, we can write the following system of equations;
2 = -7m + c ...equation 1.
-11 = 3m + c ...equation 2.
By solving the system of equations simultaneously, we have:
2 = -7m - 3m - 11
11 + 2 = -10m
13 = -10m
m = -1.3
c = 7m + 2
c = 7(-1.3) + 2
c = -7.1
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what is the co efficient of x in(2.x+3)²
A coefficient is any constant or numerical term that is in front of one or more variables and is defined as a fixed number that is multiplied by a variable. For example, in the expression 3x+2y+4, 3 is the coefficient of x, 2 is the coefficient of y but 4 is not a coefficient, as it is not being multiplied by a variable.
How do you find the coefficient of x?
To find the coefficient of x, we can encircle it or underline it. Then, take everything else except for x, i.e. 5y. So, the coefficient of x in the term 5xy is 5y. Similarly, the coefficient of y in the term 5xy is 5x.
Solving it with Binomial Theorem(2.x+3)² = (2x+3)(2x+3)
2x(2x+3)+3(2x+3)=
2x(2x+3)+3(2x+3)=
4x²+6x+3(2x+3)=
4x²+12x+9
so if your using the binomial theorem it would equal 4x²+12x+9
if you just want the coefficient of x that would be 4 ↑
i dont know the answer to this
If r = 5 units and x = 11units then what is the volume if the cylinder shown above
The volume of cylinder which is having radius as 5 units and height as 11 units, is 863.5 cubic units.
A "Cylinder" is a 3-dimensional geometric shape that consists of a circular base and a curved surface which extends up from base to fixed height.
The volume(V) of a cylinder is the amount of space enclosed by the cylinder, and it is given by the formula : V = πr²h;, where π is = 3.14, "r" denotes radius of base; "h" denotes the height;
Given that the radius is 5 units and the height is 11 units,
Substituting the values,
We get,
V = π × (5)² × (11);
V = 275π cubic units;
V = 275×3.14 = 863.5 cubic units;
Therefore, the required volume is = 863.5 cubic units.
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The given question is incomplete, the complete question is
If radius is 5 units, and height is 11 units, Find the Volume of the Cylinder.
Need help on please
Answer:
12
Step-by-step explanation:
The figure is a right triangle with hypotenuse = QS
The base from the graph = 4 units
(or you can just subtract the x-coordinates 2 - (-2) = 4)
The height from the graph is 3 units
(Or you can subtract the y-coordinates: 1 - (-2) = 3)
Since this is a right triangle the square of the hypotenuse = sum of squares of the other two sides
QS² = 3² + 4² = 9 + 16 = 25
QS, the hypotenuse = √25 = 5
The perimeter = sum of the sides = 3 + 4 + 5 = 12 units
if gender would not have mattered, what would have been the number of males that would have survived, given the data for the number of females who survived (296/402) and the total number of passengers on the ship (1207).
If gender did not matter then the number of males who would have survived would be 593 males
How to find the number who would have survived ?If gender would not have mattered, the survival rate would be the same for both genders. So, we would use the survival rate of females (which is 296/402) to calculate the expected number of males that would have survived.
First, calculate the survival rate of the females:
Survival rate = Number of females who survived / Total number of females
= 296 / 402
= 0.737
Expected number of male survivors = Number of males * Female survival rate
= 805 x 0.737
= 593 males
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