Answer: 12
Step-by-step explanation:
Using Phytagorean theorem
[tex]r^{2} = \sqrt{} y^{2} +x^{2}[/tex]
given: r=20 and y=16
[tex]20^{2} =\sqrt16^{2} +x^{2} \\400=\sqrt{256+ x^{2} \\[/tex]
move x to the other side (when x is moving to the other side the sign change)
x²= √400-256 subtract
x= √144 take the square root
x= 12
a fort is provisioned for 42 days; after 10 days, a reinforcement of 200 men arrive and the food will now only last for 24 days. how many men were there in the fort?
Since the number of men must be a whole number, we can round it up to 267. Therefore, there were initially 267 men in the fort before the reinforcement arrived.
Let's solve this problem step-by-step:
1. Initially, the fort is provisioned for 42 days.
2. After 10 days, a reinforcement of 200 men arrives.
3. With the additional men, the remaining food will now last for 24 days.
Let x represent the initial number of men in the fort.
Since the fort was provisioned for 42 days initially, we can write an equation for the total amount of food:
Total food = x men * 42 days
After 10 days, 200 men arrive and the remaining food lasts for 24 days:
Remaining food = (x + 200) men * 24 days
Since the total food and remaining food are equal, we can set the two equations equal to each other:
x * 42 days = (x + 200) * 24 days
Now, let's solve for x:
42x = 24x + 4800
Subtract 24x from both sides:
18x = 4800
Divide both sides by 18:
x = 266.67
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.
There are 11 athletes at a track meet. How many different ways can they finish first, second, and third?
how many times as many robberies were there actually in year 5 compared to year 3? round your answer to 2 decimal places.
The answer to 2 decimal places, we only need to keep two numbers after the decimal point. In this case, there are no numbers after the decimal point, so the answer is simply 5.00.
To find the answer, we need to know the number of robberies in year 3 and year 5. Let's say there were 100 robberies in year 3 and 500 robberies in year 5.
To compare the two numbers, we can divide the number of robberies in year 5 by the number of robberies in year 3:
500/100 = 5
This means that there were 5 times as many robberies in year 5 compared to year 3.
To round the answer to 2 decimal places, we only need to keep two numbers after the decimal point. In this case, there are no numbers after the decimal point, so the answer is simply 5.00.
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Determine whether the function is even, odd, or neither.
h(x) = 2x³ + 9x
even
odd
O neither
Describe the symmetry.
O x-axis symmetry
no symmetry
O y-axis symmetry
origin symmetry
Since h(-x) = -h(x), the function is odd.
How to solveThe given function is h(x) = 2x³ + 9x.
To determine whether the function is even, odd, or neither, we need to analyze the behavior of the function when x is replaced by -x:
h(-x) = 2(-x)³ + 9(-x) = -2x³ - 9x.
Since h(-x) = -h(x), the function is odd.
Odd functions have origin symmetry, which means that if you rotate the graph 180 degrees around the origin, it remains unchanged. In other words, the graph has symmetry with respect to the origin, which occurs when the point (x, y) on the graph implies the point (-x, -y) is also on the graph.
So, the function h(x) is odd and has origin symmetry.
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Using the graphing function on your calculator, find the solution to the system of equations shown below. 4y + 12x = 10 2y - 6x = -8 A. No solution B. More than 1 solution C. x = 13/12, y = -3/4 D. x = -6, y = 2
Therefore, the solution to the system of equations is: x = 13/12, y = -3/4 that is option C.
What is equation?In mathematics, an equation is a statement that asserts the equality of two expressions, separated by an equals sign (=). The expressions on either side of the equals sign are referred to as the left-hand side (LHS) and the right-hand side (RHS) of the equation. Equations are used to describe relationships between variables and to solve problems.
Here,
To solve the system of equations:
4y + 12x = 10 ...(1)
2y - 6x = -8 ...(2)
We can use the method of elimination or substitution.
Method of elimination:
We can eliminate x by multiplying equation (2) by 2 and adding it to equation (1) to obtain:
4y + 12x = 10
(4y - 12x = -16)
8y = -6
Dividing both sides by 8, we get:
y = -6/8
y = -3/4
Substituting this value of y in equation (1), we get:
4(-3/4) + 12x = 10
Simplifying and solving for x, we get:
-3 + 12x = 10
12x = 13
x = 13/12
So the answer is C. x = 13/12, y = -3/4.
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What is the surface area of this composite solid? Show your work.
According to the above, we have to add the surface area of each face. So, the surface area of this solid would be 127.
What is the surface area of the composite solid?To calculate the surface area of the composite solid we have to perform the following procedure:
Sides (a) area
4 * 3 = 1212 * 2 = 24Sides (b) area
7 * 3 = 2121 * 3 = 63Face (c) area
3 * 4 / 2 = 66 * 2 = 12Base area
4 * 7 = 28
Total surface area
To calculate the total surface area we have to add the value of each face as shown below:
28 + 12 + 63 + 24 = 127According to the above, the surface area of this solid would be 127.
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PLEASE HELP ME FIND DE, EF, and m
The values of the missing sides and angles of the triangle using sine rule are;
DE = 18.3
<D = 84°
EF = 20.8
How to Use the sine rule?Sine rule is a method that is used to find the missing angles and sides of triangles.
Thus, it is expressed as;
a/sin A = b/sin B = c/sin C
Thus;
12/sin 35 = DE/sin 61
DE = 12(sin 61)/sin 35
DE = 18.3
Sum of angles in a triangle is 180°. Thus;
<D = 180 - (61 + 35)
<D = 84°
Similarly;
EF/sin 84 = 12/sin 35
EF = 12(sin 84)/sin 35
EF = 20.8
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Find the volume of the cone. Use 3. 14 for π. Round to the nearest tenth.
A. 18,324. 8 cm3
B. 1,271. 7 cm3
C. 1,527. 1 cm3
D. 4,581. 2 cm3
The volume of the cone is1527.1 cm³
And the correct answer is an option (c)
We know that he formula for the volume of the cone is:
V = 1/3(π × r² × h)
Here, the diameter of the base of the cone is 15 cm
so, the radius of the cone would be,
r = 15/2 cm
r = 7.5 cm
And the slant heihgt of the cone is l = 27 cm
Using Pythagoras theorem the height h of the cone would be,
h = √(l² - r²)
h = √(27² - 7.5²)
h = √(672.75)
h = 25.94 cm
Using above formula, the volume of the cone would be,
V = 1/3(π × r² × h)
V = 1/3(π × (7.5)² × 25.94)
V = 1527.99 cm³
V = 1527.1 cm³
Therefore, the correct answer is an option (c)
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Find the complete question below.
Ocean sunfishes are well-known for rapidly gaining a lot of weight on a diet based on jellyfish.
The relationship between the elapsed time,
�
tt, in days, since an ocean sunfish is born, and its mass,
�
(
�
)
M(t)M, left parenthesis, t, right parenthesis, in milligrams is modeled by the following function:
�
(
�
)
=
4
⋅
(
81
49
)
�
M(t)=4⋅(
49
81
)
t
M, left parenthesis, t, right parenthesis, equals, 4, dot, left parenthesis, start fraction, 81, divided by, 49, end fraction, right parenthesis, start superscript, t, end superscript
Complete the following sentence about the rate of change in the mass of the sunfish. Round your answer to two decimal places.
The sunfish gains
2
7
7
2
start fraction, 2, divided by, 7, end fraction of its mass every
days.
Step-by-step explanation:
We can use the formula for exponential growth to find the rate at which the sunfish gains mass:
M(t) = M(0) * e^(kt)
where:
M(0) = the initial mass of the sunfish (which we don't know)
k = the growth rate constant (which we also don't know yet)
t = the elapsed time since the sunfish was born (in days)
e = the mathematical constant approximately equal to 2.71828...
We are given the formula for M(t), which is:
M(t) = 4 * (81/49)^t
This means that M(0) = 4 * (81/49)^0 = 4.
To find the growth rate constant k, we can use the fact that the sunfish gains 2/7 of its mass every day. This means that the daily growth rate is 2/7 of the current mass. In other words, the daily growth rate is:
(2/7) * M(t)
We can relate this to the exponential growth formula by taking the derivative of M(t) with respect to t:
dM/dt = k * M(t)
Taking the derivative of M(t), we get:
dM/dt = ln(81/49) * 4 * (81/49)^t
Setting this equal to the daily growth rate, we get:
(2/7) * M(t) = ln(81/49) * 4 * (81/49)^t
Simplifying this expression, we get:
k = ln(81/49) * 4/7
Using a calculator, we can evaluate this expression to get:
k ≈ 0.0919
Therefore, the rate at which the sunfish gains mass is given by:
dM/dt = 0.0919 * M(t)
To find out how much mass the sunfish gains in one day, we can substitute M(t) = 4 * (81/49)^t into this formula and evaluate it at t = 1 (since we want to know the daily rate of change):
dM/dt = 0.0919 * 4 * (81/49)^1
dM/dt ≈ 0.54
This means that the sunfish gains 0.54 milligrams every day. To express this as a fraction of its mass, we can divide by the current mass:
(0.54/4) ≈ 0.1375
So the sunfish gains approximately 2/7 (or 0.2857) of its mass every 2.08 (or 7/2.54) days. Rounded to two decimal places, this is 0.14 or approximately 2/7 of its mass every 2.08 days.
In an instant lottery, your chances of winning are 0.1. If you play the lottery twice and outcomes are independent, the probability that you lose both times is
The probability that you lose both times in the instant lottery is 0.81.
In order to find the probability of losing both times in the instant lottery, we can use the following steps:
Determine the probability of losing once:
Since the probability of winning is 0.1, the probability of losing is 1 - 0.1 = 0.9.
Calculate the probability of losing twice:
Since the outcomes are independent, we can multiply the probabilities of losing each time.
So, the probability of losing both times is 0.9 * 0.9.
Calculate the final result: 0.9 * 0.9 = 0.81.
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q 17
PLEASE ANSWER FAST
The equation for the axis of symmetry for the given parabolic graph is found as: x = 3.
Explain about the parabolic curve:A parabola is the graph of a quadratic function and features a vertical line passing through its vertex as its axis of symmetry.
A parabola, a U-shaped curve, is the shape of a quadratic function's graph. The graph's vertex, which is an extreme point, is one of its key characteristics. The vertex, or lowest point on the graph or minimal value of the quadratic function, is where the parabola will open up. The vertex is the highest location on the graph or the maximum value if the parabola opens downward. The vertex is a pivotal location on the graph in both scenarios.The graph is also symmetric, with the axis of symmetry being a vertical line that passes through the vertex.
Thus, the equation for the axis of symmetry for the given parabolic graph is found as: x = 3.
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RP←→
is used to form various angles. Which pair of angles must be supplementary?
∠PQT and ∠TQR
∠TQS and ∠SQR
∠PQT and ∠PQS
∠PQT and ∠TQS
Answer:
∠PQT and ∠TQR.
Step-by-step explanation:
If you're still confused about which angles are supplementary, let me give you a hint. Imagine that RP←→ is a giant ruler that you can use to measure the angles. Now, if you place the ruler on ∠PQT and ∠PQS, you'll see that they are too small to fit the whole ruler. They only cover half of it, which means they add up to 90 degrees. That's not what we want, we want 180 degrees!
Similarly, if you place the ruler on ∠TQS and ∠SQR, you'll see that they are too big to fit the whole ruler. They overlap each other, which means they are equal. And if they are equal, they must be 90 degrees each, because that's the only way two angles can add up to 180 degrees. But we don't want two 90 degree angles, we want two different angles!
The only option left is ∠PQT and ∠TQR. If you place the ruler on them, you'll see that they fit perfectly on the whole ruler. They cover it from end to end, which means they add up to 180 degrees. That's exactly what we want! So the correct answer is ∠PQT and ∠TQR. Congratulations, you've just solved a tricky geometry problem with a simple tool!
Which equation matches the table?
An equation that matches the table include the following: y = x + 5.
How to determine an equation of this line?In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):
y - y₁ = m(x - x₁)
Where:
m represent the slope.x and y represent the points.First of all, we would determine the slope of this line;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (6 - 5)/(1 - 0)
Slope (m) = 1/1
Slope (m) = 1.
At data point (0, 5) and a slope of 1/, a linear equation in slope-intercept form for this line can be calculated by using the point-slope form as follows:
y - y₁ = m(x - x₁)
y - 5 = 1(x - 0)
y - 5 = x
y = x + 5
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a nonlinear system contains the equation of a constant function and the equation of a circle. the system has one solution. describe the relationship between the graphs
The constant function and quadratic function intersect at one point in the nonlinear system.
What is the relationship between the graphs in a nonlinear system with one solution?In a nonlinear system with a constant function and a quadratic function, the two graphs intersect at one point, indicating the solution to the system. The constant function represents a horizontal line, while the quadratic function represents a parabola.
The point of intersection represents the solution where the value of the constant function equals the value of the quadratic function. The relationship between the two graphs is that they intersect at this one point, which is the unique solution to the system
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I NEED HELP ON THIS ASAP!!!
The exponential function f(x) = 2^x is given by the blue graph on the given graph.
What is an horizontal asymptote?The horizontal asymptote of a function is the value of f(x) as x goes to infinity, as long as this value is different of infinity.
The function in this problem is defined as follows:
y = 2^x.
Two relevant numeric values are given as follows:
When x = -1, y = 2^(-1) = 1/2 = 0.5.When x = 0, y = 2^0 = 1.Hence the function is represented by the blue graph.
The horizontal asymptote is of y = 0, as when x goes to negative infinity, y goes to zero.
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What is the procedure for quickly stopping a car with ABS
Answer:
Press down the brake firmly and smoothly. ...
Don't brake and swerve the car at the same time. ...
Avoid using your transmission for quick stops. ...
Focus on where you want to go, not what you want to avoid.
Creating Ordered pairs
Answer:
either or
2,4 or 4,2
4,8 or 8,4
6,12 or 12,6
8,16 or 16,8
Step-by-step explanation:
if u tell me which one is x and would help even more good luck
Jackson bought 5 books that cost $7 each. How much change did he get from $40?
The remaining amount that Jackson has is $5.
The cost of 5 books at $7 each is:
5 books * $7/book = $35
To find the amount of change Jackson got from $40, we need to subtract the cost of the books from $40:
$40 - $35 = $5
Therefore, Jackson got $5 in change.
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the sample size formula for estimating a proportion using a confidence interval with margin of error e involves the product p(1-p). this product is not known. a conservative approach is to use
A value of 0.25 for p(1-p) in the sample size formula when the true value of p is unknown.
This is because the value of p(1-p) is maximum when p=0.5, and since we do not have any information about the true value of p, assuming p=0.5 is the most conservative approach. Therefore, to calculate the sample size required to estimate a proportion using a confidence interval with a margin of error e, we can use the formula:
[tex]n = [z^2 * p(1-p)] / e^2[/tex]
where z is the z-score corresponding to the desired level of confidence (e.g., 1.96 for 95% confidence), and e is the desired margin of error. We can use p=0.5 and solve for n to get a conservative estimate of the sample size required for the given confidence level and margin of error.
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If prior knowledge or data suggests that the proportion is significantly different from 0.5, then a more accurate estimate of p should be used in the formula.
To calculate the sample size formula for estimating a proportion using a confidence interval with a margin of error e, we
use the following formula:
[tex]n = (Z^2 × p × (1-p)) / e^2[/tex]
where n is the required sample size, Z is the Z-score corresponding to the desired level of confidence,
p is the estimated proportion, and
e is the margin of error.
Since the product p(1-p) is not known, a conservative approach is to use p = 0.5, which is the value that maximizes the
product p(1-p) for any given proportion.
This approach ensures that the sample size will be large enough to obtain a reliable estimate of the proportion, even if
the true proportion is close to 0 or 1. However, if prior knowledge or data suggests that the proportion is significantly
different from 0.5, then a more accurate estimate of p should be used in the formula.
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brainliest+100 points
Find the entire perimeter of the entire floor
I need helpp please do as many as u can but can you please do the whole thing thank youuuuuu
The values of following in parallel lines are:
Angle 3 and Angle 6 are an example of corresponding angles. (Option D is the correct answer).
Angle 1 and Angle 5 are an example of corresponding angles. (Option D is the correct answer).
Angle 6 and Angle 7 are an example of alternate interior angles. (Option B is the correct answer).
Angle 28 would not be congruent to the measure of 27. (Option A is the correct answer).
Angle 41 and Angle 23 are an example of corresponding angles. (Option D is the correct answer).
Option B: 23 is not an example of supplementary angles.
Angle 22 is vertical to Angle 27. Therefore, m22 = m27 = 115°.
Angle 23 and Angle 25 are alternate interior angles, so they are congruent. Therefore, m23 = m25 = 63°.
Angle 1 and Angle 26 are corresponding angles, so they are congruent. Therefore, mz1 = mz6 = 57°.
What is parallel lines?Parallel lines are two or more lines in a plane that never intersect each other, no matter how far they are extended. In other words, they are always at the same distance from each other and never cross.
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MARKING BRAINLEIST PLS HELP ASAP
Answer:
Step-by-step explanation:
a coordinate plane has given a coordinate to each an every point we draw on that. So when we have to find the radius of this circle , we have to find a pair of coordinates.
So I am taking these coordinates; (0,3) and (0,7)
So the radius = 7-3= 4 units
Identify the side lengths of the following triangle.
The side lengths of the triangle are CA = 42.0 and BC = 36.4
Identifying the side lengths of the triangle.From the question, we have the following parameters that can be used in our computation:
The triangle
Using the tangent rratio, we have
tan(60) = BC/21
So, we have
BC = 21 * tan(60)
Evaluate
BC = 36.4
Next, we have
CA = √[36.4^2 + 21^2] -- pythagoras theorem
Evaluate
CA = 42.0
Hence, the side lengths are CA = 42.0 and BC = 36.4
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Help please !
I need the answer I’m stuck
Answer: I think it might be A.
Step-by-step explanation:
What is ¨the area of a parking lot¨ unit of measurement
A - Square meters
B - Yards
C - Cubic inches
D - Cubic feet
E - Square centimeters
10 yd
T
12 yd
5 yd
Name of figure: ___\\
Volume:
Answer:
name of figure : pyramid
volume : 200yds.
Step-by-step explanation:
The formula for volume of a pyramid is 1/3(lwh), in this case, it would be 1/3(12x5x10). 12x5x10 is 600, and 1/3 of 600 is 200. Therefore, the volume is 200yds.
IM VERY SORRY IF THIS DIDN'T MAKE SENSE!
QUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICKQUICK QUICK
Answer:
15.0 in
Step-by-step explanation:
You want the height of a cone with radius 8 in and slant height 17 in.
Pythagorean theoremThe right triangle shown in the figure has height h, base x = 8 in, and slant height y = 17 in. The Pythagorean theorem tells you the relationship between these side lengths:
x² +h² = y²
8² +h² = 17²
h² = 17² -8² = 289 -64 = 225
h = √225 = 15.0
The height of the cone is 15.0 inches.
__
Additional comment
A triple of 3 integers that form the sides of a right triangle is called a "Pythagorean triple." The triple in this problem is one of those: {8, 15, 17}. Other Pythagorean triples you will often see in algebra, trig, and geometry problems are {3, 4, 5}, {5, 12, 13}, {7, 24, 25}, {9, 40, 41}. You will also see multiples of these, for example 3×{3, 4, 5} = {9, 12, 15}.
It can be worthwhile to remember some of these. For this problem, recognizing 8 and 17 as part of the triple {8, 15, 17} means you can write down the answer with no further work.
6 3/7 + 1 2/5 fraction.
The sum of 6 3/7 and 1 2/5 as a mixed fraction is 7 29/35.
What is the addition of the given fractions?Given the mixed fraction in the question:
6 3/7 + 1 2/5
To add mixed fractions, we first need to convert them into improper fractions.
First, convert 6 3/7 to an improper fraction:
6 3/7 = (6 × 7)/7 + 3/7
= 42/7 + 3/7
= 45/7
Convert 1 2/5 to an improper fraction:
1 2/5 = (1 × 5)/5 + 2/5
= 5/5 + 2/5
= 7/5
Now we can add the fractions:
45/7 + 7/5
(45 × 5)/(7 × 5) + (7 × 7)/(5 × 7)
= 225/35 + 49/35
= 274/35
= 7 29/35.
Therefore, the sum is 274/35 or 7 29/35.
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What is the equation of the line that passes through the point (6,2) and has a slope of -1/2?
An equation of the line that passes through the point (6,2) and has a slope of -1/2 is y = -1/2(x) + 5.
How to determine an equation of this line?In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical expression:
y - y₁ = m(x - x₁)
Where:
x and y represent the data points.m represent the slope.At data point (6, 2) and a slope of -1/2, a linear equation for this line can be calculated by using the point-slope form as follows:
y - y₁ = m(x - x₁)
y - 2 = -1/2(x - 6)
y - 2 = -1/2(x) + 3
y = -1/2(x) + 3 + 2
y = -1/2(x) + 5
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Part A--What is the measure of angle "a" and how do you know? Use vocabulary words to justify your answer. Show your work. Part B--What is the measure of angle "b" and how do you know? Show your work. Part C--What is the measure of angle "c" and how do you know? Show your work. Two straight lines intersect at a point to form angle a. The measure of the angle opposite to angle a is 30 degrees. Angle a is the angle of a right triangle having another angle equal to b. A triangle with one angle labeled c is on the left of the figure. The angle adjacent to c is labeled 75 degrees
The measure of angle a is 30° , angle b is 60° and angle c is 105° calculated from the properties of angles and of triangle.
When two straight lines intersect each other at some angle, say line AB intersect line CD, then the opposite angles formed by the two lines are called vertically opposite angles. A pair of vertically opposite angles are equal to each other.
Angle a is formed at the intersection of the two straight lines, say AB and CD. The angle opposite to angle is 30°.
Thus from the definition of vertically opposite angles we get,
Angle a = 30° , since pair of vertically opposite angles are equal to each other.
In a right angle triangle one of three angles is 90° and the other two angles are acute angles. The sum of all the angles of a triangle is 180°.
Say ΔMNO is a right angle triangle where angle a is one of the other two acute angles (where angle a = 30°).
The third angle (acute) is b.
Thus from the sum of triangle we get,
Angle a + Angle b + 90° = 180°
⇒ 30° + Angle b + 90° = 180°
⇒ Angle b = 60°
Here angle c is an angle labelled in a triangle (on the left of the previous triangle, say ΔMNO).
Two angles are said to be adjacent angles when they have a common vertex and side. The pair of adjacent angles sum to 180° , that is they are supplementary angles.
The adjacent angle of Angle c is 75°.
Thus, Angle c + 75° = 180°
⇒ Angle c = 105°
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