Use trigonometry to find the ramp distance.
sin(4.76°) = 2/r
Let r = ramp distance in feet
r = 2/sin(4.76°)
r = 24.1015718106
Round off to the nearest foot.
Doing so we get r = 24 feet.
The ramp is 24.0 feet long.
Answer: Choice C
What is the value of x if 2 + 4x = 10?
Answer:
x = 2
Step-by-step explanation:
2 + 4x = 10
4x = 10 - 2
x = 8
x = 8 ÷ 4
x = 2
Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less. Write an inequality that represents the number of days Diego's father can drive the car without the warning light coming on. Explain each part of your inequality
Answer:
The inequality is [tex]0.6x < 12.5[/tex]
The maximum number of days that Diego's father can drive the car without the warning light coming on is 20 days
Step-by-step explanation:
14 gallons-1.5 gallons=12.5 gallons
we know that
If the remaining fuel is greater than 1.5 gallons Diego's father can drive the car without the warning light coming on
so
Let
x ----> the number of days
[tex]0.6x < 12.5[/tex] ----> inequality that represent the situation
Solve for x
[tex]x < 12.5/0.6[/tex]
[tex]x < 20.8\ days[/tex]
The maximum number of days that Diego's father can drive the car without the warning light coming on is 20 days
An inequality is similar to an equation in that they both describe the relationship between two expressions.
The inequality represents the number of days Diego's father can drive the car without the warning light coming on is [tex]\rm x<20.8[/tex].
GivenDiego's family car holds 14 gallons of fuel.
Each day the car uses 0.6 gallons of fuel.
A warning light comes on when the remaining fuel is 1.5 gallons or less.
What is inequality?An inequality is similar to an equation in that they both describe the relationship between two expressions.
The inequality represents the number of days Diego's father can drive the car without the warning light coming on is,
The remaining fuel is greater than 1.5 gallons Diego's father can drive the car without the warning light coming on.
Here, x represents the number of days.
Therefore,
The inequality represents the number of days Diego's father can drive the car without the warning light coming on is,
[tex]\rm 0.6x<12.5\\\\x < \dfrac{12.5}{0.6}\\\\x<20.8[/tex]
Hence, The inequality represents the number of days Diego's father can drive the car without the warning light coming on is [tex]\rm x<20.8[/tex].
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Anne has saved 9 dollarsfor a new coat.Tgat is 1/6 as much money as she needs.How much does the coast cost?
The coat will cost $54
The equation for a circle is x^2 − 8x + y^2 - 2y - 8 = 0
.
What is the equation of the circle in standard form?
(x−16)^2+(y−1)^2=16 (A)
(x−4)^2+(y−1)^2=25 (B)
(x−16)^2+(y−1)^2=25 (C)
(x−4)^2+(y−1)^2=16 (D)
Answer:
B
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
To obtain this form use the method of completing the square
Given
x² - 8x + y² - 2y - 8 = 0 ( add 8 to both sides )
x² - 8x + y² - 2y = 8
add ( half the coefficient of the x/y terms )² to both sides
x² + 2(- 4)x + 16 + y² + 2(- 1)y + 1 = 8 + 16 + 1
(x - 4)² + (y - 1)² = 25 → B
Final answer:
The standard form of the given circle equation is (x - 4)^2 + (y - 1)^2 = 25, which is option (B).
Explanation:
To rewrite the given equation of a circle in standard form, we need to complete the square for both x and y terms. The equation is given as:
x² − 8x + y² - 2y - 8 = 0
We organize the equation by grouping x and y terms:
(x² − 8x) + (y ² - 2y ) = 8
To complete the square, we add to each side (½ the coefficient of x) ² for the x-terms and (½ the coefficient of y) ² for the y-terms:
For the x terms: (½ × -8)² = (-4)² = 16. Add 16 to both sides.
For the y terms: (½ × -2)² = (-1)² = 1. Add 1 to both sides.
Our equation becomes:
(x² − 8x + 16) + (y² - 2y + 1) = 8 + 16 + 1
Which simplifies to:
(x - 4)² + (y - 1)² = 25
Therefore, the standard form of the given equation is (x - 4)² + (y - 1)² = 25, and the correct answer from the options is (B).
Which choice is equivalent to the expression below when x is greater than or equal to 0?
Answer:
Choice A is the correct answer
Step-by-step explanation:
[tex]2x\sqrt{2x}[/tex]
Find the attachment below for the explanation
For this case we must indicate an expression equivalent to:
[tex]\sqrt {18x ^ 3} - \sqrt {9x ^ 3} +3 \sqrt {x ^ 3} - \sqrt {2x ^ 3}[/tex]
So, rewriting the terms within the roots we have:
[tex]18x ^ 3 = (3x) ^ 2 * (2x)\\9x ^ 3 = (3x) ^ 2 * (x)\\x ^ 3 = x ^ 2 * x\\2x ^ 3 = (2x) * x ^ 2[/tex]
So:
[tex]\sqrt {(3x) ^ 2 * (2x)} - \sqrt {(3x) ^ 2 * (x)} + 3 \sqrt {x ^ 2 * x} - \sqrt {(2x) * x ^ 2} =[/tex]
Removing the terms of the radical:
[tex]3x \sqrt {2x} -3x \sqrt {x} + 3x \sqrt {x} -x \sqrt {2x} =[/tex]
We simplify adding terms:
[tex]3x \sqrt {2x} -x \sqrt {2x} -3x \sqrt {x} + 3x \sqrt {x} =\\2x \sqrt {2x} + 0 =\\2x \sqrt {2x}[/tex]
Answer:
Option A
Please please help me
Answer:
151.4496 cm²
Step-by-step explanation:
The area of a trapezoid is found using the formula ...
A = (1/2)(b1 +b2)h
where b1 and b2 are the lengths of the parallel bases and h is the distance between them. Fill in the numbers and do the arithmetic.
A = (1/2)(22.2 cm + 8.52 cm)(9.86 cm) = 151.4496 cm²
Find the greatest common factor of 8m 3 and 6m 4
The greatest common factor of 8m^3 and 6m^4 is 2m^3. This is found by determining the highest number or term that can divide both terms exactly, considering both the coefficients and the power of the variable.
Explanation:The question asks for the greatest common factor of the terms 8m3 and 6m4. The greatest common factor (GCF) is the highest number or term that divides both numbers exactly. Ignoring the coefficients (8 and 6), we can easily see that these terms both contain the variable 'm', raised to the powers 3 and 4, respectively.
The rule for dealing with variables when finding the GCF is to take the variable to the power which is the lesser of the two. In this case, that would be m3. Now, looking at the coefficients (8 and 6), the highest number that can divide them both exactly is 2. Therefore, the greatest common factor of 8m3 and 6m4 is 2m3.
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The greatest common factor of 8m³ and 6m⁴ is 2m³, which is found by identifying the shared prime factors and the lowest power of 'm' present in both terms.
To find the greatest common factor (GCF) of 8m³ and 6m³, we need to find the highest power of each prime number and the variable that is contained in both terms. The prime factorization of 8 is 23, and for 6, it is 2 × 3. Since both have at least one factor of 2, we'll use that in our GCF. Additionally, since the lowest power of 'm' that appears in both terms is m3, we will also use that.
The GCF is the product of these shared factors. So, we have:
2 (the common prime factor)
m3 (the lowest power of 'm' in both terms)
Therefore, the GCF of 8m³ and 6m⁴ is 2m³.
Pls help me...........
Answer:
[tex]\frac{4}{5}[/tex]
Step-by-step explanation:
Using the Pythagorean identity
sin²x + cos²x = 1, then
sin²x = 1 - cos²x
sinx = [tex]\sqrt{1-cos^2x}[/tex]
note that cosΘ = [tex]\frac{6}{10}[/tex] = [tex]\frac{3}{5}[/tex]
sinΘ = [tex]\sqrt{1-(3/5)^2}[/tex]
= [tex]\sqrt{1-\frac{9}{25} }[/tex]
= [tex]\sqrt{\frac{16}{25} }[/tex] = [tex]\frac{4}{5}[/tex]
Scores on a standardized test are normally distributed with a mean of 228 and a standard deviation of 18. Students who score at least 2.3 standard deviations above the mean receive a certificate.
What is the minimum score required to receive the certificate?
Answer:
270
Step-by-step explanation:
The mean is 228 and the standard deviation is 18.
2.3 standard deviations above the mean is:
228 + 2.3×18
228 + 41.4
269.4
Since scores are usually integers, we round up to 270.
Change -25.49 to degrees,minutes,and seconds A -25 29' 24'' B -25 31' 32'' C -25 29' 31'' D -25 32' 40''
Answer:
A. -25° 29' 24"
Step-by-step explanation:
It is easier to talk about this by considering the magnitude of the angle, then applying the sign to the result.
The fractional part, 0.49°, can be multiplied by 60' per degree to get the number of minutes:
0.49° × 60'/1° = 29.4'
The fractional part of this, 0.4', can be multiplied by 60" per minute to get the number of seconds:
0.4' × 60"/1' = 24"
Then the angle is ...
-25.49° = -25° 29' 24"
_____
Alternate solution
You can recognize this is 0.01° less than 25° 30', so is ...
0.01° × 60' = 0.6' = 0.6 × 60" = 36"
When 36" is subtracted from 25.5° = 25° 30', the result is 25° 29' 24". Of course, your angle is negative: -25° 29' 24".
_____
Comment on base-60 arithmetic
In base-10 arithmetic, when you borrow 1 from the next higher place in the number, you are borrowing ten of the current place. For example, when you are doing arithmetic with hundreds, and you borrow 1 from the thousands place, you have effectively borrowed 10 hundreds.
In base-60 arithmetic, when you borrow one from the next higher place, you borrow 60 of the current unit. That is, borrowing one minute gives you 60 seconds. Thus, 30 minutes is the same as 29 minutes and 60 seconds. Subtracting 36 seconds from this value gives 29 minutes and 24 seconds.
The term "borrowing" was used when I learned arithmetic. More recently, I've seen it called "rewriting" the number. I also think of it as "making change": changing a higher unit to an equivalent number of smaller units.
The height of a rocket launched upward from a 160 foot cliff is modeled by the function h(t)= -16t^2+48t+160, where h is height in feet and t is time in seconds. Find the time it takes the rocket to reach the ground at the bottom of the cliff.
Answer:
5 seconds
Step-by-step explanation:
In order to find the time when it landed, we will have to find the x-intercepts.
Equation given to us : -16t² + 48t + 160
Let's take the GCD, which is -16.
-16( t² - 3t - 10 )
Factoring what's inside the brackets, we get the x-intercepts.
What multiples to -10 but adds up to -3? The numbers are -5 and 2
-16 ( t - 5 ) ( t - 2 )
X-intercepts are t - 5 and t - 2
Which is 5 and 2 seconds. But one of this is an extraneous solution and that is 2.
If we substitute the value of 2 in the equation, we will not get 0.
During the x-intercept, the x has a value and y is 0. If we substitute 5 ans x. we will get y as 0.
Hence, the answer is 5 seconds.
Question 4(Multiple Choice Worth 2 points) (09.06) For two functions, m(x) and p(x), a statement is made that m(x) = p(x) at x = 7. What is definitely true about x = 7? Both m(x) and p(x) cross the x-axis at 7. Both m(x) and p(x) cross the y-axis at 7. Both m(x) and p(x) have the same output value at x = 7. Both m(x) and p(x) have a maximum or minimum value at x = 7.
Answer:
See below.
Step-by-step explanation:
The 2 functions have the same output value when x = 7 ( that is what m(x) = p(x) at x = 7 means).
Will give brainliest answer. Simplify and select the answer with the appropriate restrictions for the variable.
Answer:
4:The denominator can't be equal to 0, therefore - 5
5: 4)The denominator can't equal to 0 -4
Answer:
Question 4:
(x² - 25) / (x - 5)
= (x² - 5²) / (x - 5)
= [(x - 5) · (x + 5)] / (x - 5)
= x + 5
The denominator can't be equal to 0, therefore:
x - 5 ≠ 0 ⇔ x ≠ 5
Question 5:
(3x² - 6x) / (x² - 2x - 8)
= [3x (x - 2)] / (x² + 4x - 2x - 8)
= [3x (x - 2)] / [x (x + 4) - 2 (x + 4)]
= [3x (x - 2)] / [(x - 2) (x + 4)]
= 3x / (x + 4)
The denominator can't equal to 0, therefore:
x + 4 ≠ 0 ⇔ x ≠ -4
question 66
true or false
Answer:
True
Step-by-step explanation:
we know that
sin(-360°)=sin(360°)=0
therefore
y=sin(-360°)=0
Consider a triangle with side lengths of 10 ft, 17.32 ft, and 20 ft. By examining the side lengths, what can you conclude about the measurement of the angles? Explain your reasoning. A) The angles are 30-60-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3 . B) The angles are 60-60-60. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3. C) The angles are 45-45-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3. D) The angles are 30-60-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 2.
Answer:
A) The angles are 30-60-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3.
Step-by-step explanation:
The answer choice speaks for itself.
The legs of a 45-45-90 triangle have the ratios 1 : 1 : √2.
The legs of a 30-60-90 triangle have the ratios 1 : √3 : 2.
Clearly, the given leg lengths match the second set of ratios more closely:
10 : 17.32 : 20 ≈ 1 : √3 : 2.
Chase plays the piano and the cello. For every 2 hours he practices the piano, he practices the cello for 3 hours. If he practiced the piano for 5 hours last week, how many hours did he spend practicing the cello?
He would have played the cello for 7 hours and 30 minutes because 4 hours would be 6 hours of the cello and then he only did one more hour so you split 3 in half and that makes it an hour and a half. So the answer is 7 hours 30 minutes
Given that the ratio of piano practice to cello practice for Chase is 2:3, if he practiced the piano for 5 hours, he would have practiced the cello for 7.5 hours.
Explanation:To find out how many hours Chase spent practicing the cello, we first need to assess the ratio of piano to cello practice. The problem tells us that for every 2 hours practicing the piano, Chase spends 3 hours practicing the cello. So, the ratio of piano to cello practice is 2:3.
If he practiced the piano for 5 hours, the equivalent time spent practicing the cello can be found by setting up a proportion like: (2 hours piano / 3 hours cello) = (5 hours piano / x hours cello), where x is the number of cello practicing hours. Solving this proportion for x gives us x = (5 * 3) / 2 = 7.5 hours.
An interpretation of this result is that for every hour Chase spends practicing the piano, he spends 1.5 hours practicing the cello. Therefore, Chase spent 7.5 hours practicing the cello last week, given that he practiced the piano for 5 hours.
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select the angle that correctly completes the law of cosines for this triangle
Answer:
Option 'B'
Step-by-step explanation:
The law of cosines states that given a triangle with sides a, b, c, then:
[tex]c^{2} =a^{2}+b^{2} -2abcos(y)[/tex] where 'y' is the opposite angle to the side 'c'.
In this case, given that the equation is: [tex]15^{2} =8^{2} + 17^{2} -2(8)(17)cos(y)[/tex] we can clearly see that c=15, and the opposite angle to 'c' is 62 degrees.
The correct option is Option 'B'
ANSWER
B. 62°
EXPLANATION
The cosine rule is given by:
[tex] {b}^{2} + {c}^{2} - 2(bc) \cos(A) = {a}^{2} [/tex]
where A is the angle that is direct opposite to the side length which is 'a' units.
The given relation is:
[tex]8^{2} + {17}^{2} - 2(8)(17) \cos( - ) = {15}^{2}[/tex]
The missing angle should be the angle directly opposite to the side length measuring 15 units.
From the diagram the missing angle is 62°
A vendor sells three types of watches. Of the watches in stock 20% are mens watches, 40% are ladies watches and the rest are childrens watches. There are 250 all together how many childrens watches are there math
Answer:
100.
Step-by-step explanation:
The percentage of children's watches = 100 - 20 - 40 = 100-60
= 40%.
40% = 0.40 as a decimal fraction.
So the number of children's watches
= 0.40 * 250
= 100.
Jeremy is recording the weights, in ounces, of different rock samples in a lab. The weights of seven rocks are listed below.
11, 13, 14, 6, 10, 9, 10
The eighth rock that he weighed was 5 ounces. How would the interquartile range of the data be affected if Jeremy includes the weight of the eighth rock?
A.
The interquartile range does not change.
B.
The interquartile range cannot be determined.
C.
The interquartile range increases.
D.
The interquartile range decreases.
CCCCCCCCCCCCCCCCCCCCCC
Answer:
The correct answer is option "C"
"The interquartile range increases"
The value of the (RIC) will increase from 4 to 5.75, that is, 44%
Step-by-step explanation:
The range is defined as the difference between the maximum and minimum value of a series of data. Xmax - Xmin
The interleaving range (RIC) is a measure of dispersion that measures the central range of 50% of the data.
Therefore, if a low value is included, such as five, the variance of the data would be greater and, consequently, the value of the (RIC) will increase from 4 to 5.75, that is, 44%
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
The graph of a polynomial function of degree 5 has three x-intercepts, all with multiplicity 1. Describe the nature and number of all its zeros.
The answer is C: Three real zeros and 2 imaginary zeros
Answer: C) 3 real zeros & 2 imaginary zeros
Step-by-step explanation:
Since the function has a degree of 5, then there must be 5 zeros.
If each of the 3 given zeros crosses the x- axis (which is what happens when it has an odd-numbered multiplicity), then there are 2 zeros missing.
The missing zeros are imaginary.
(3 zeroes × multiplicity of 1) + (2 imaginary)
3 + 2 = 5 [tex]\large\checkmark[/tex]
r=14costheta in rectangular form
Answer:
x² +y² = 14x
Step-by-step explanation:
Making the usual substitution x = r·cos(θ) and r² = x² +y², we can get there this way:
Substitute cos(θ) = x/r:
r = 14·x/r
Multiply by r:
r² = 14x
Substitute for r²:
x² + y² = 14x
_____
The original equation is shown dotted; the rectangular version is shown as a solid line. The graphs are identical.
x2 + y3 = 14x is the soulution of your answer (sorry for bad grammar)
The table show whether a bus pass is a child’s or adult’s pass and whether it is a daily or monthly pass
(it’s a lot of different answers, like 50.8% or 60% or 60.8%)
do anybody have a for sure answer?
Answer:
50.8%
Step-by-step explanation:
That is the one my friend and I chose. It is 31/61 when all the stuff is added together and that is put to 50.8 as a percentage..
If a circle with a diameter of 20 m is inscribed in a square, what is the probability that a point picked at random in the square is in the shaded region?
A. 1/5
B. 43/200
C. 86/314
D. 314/400
I used 3,14 for pi since it was only way it made sense based on the answers.
The question probably provided you with this.
If you have any more questions do not hesitate :)
The probability that a point picked at random in the square is in the shaded region will be 86/314. Thus option C is correct.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
Given:
A circle with a diameter of 20 m is inscribed in a square .
Thus side of square = 20 m
Now, area of square = 20 x 20
= 400 sq m
The radius of circle = 10 m
Area of circle
[tex]A = \pi r^2\\\\A = 3.14 \times 10^2\\\\A = 314 m^2[/tex]
Now, Area of shaded region = Area of the square - an area of circle
Area of shaded region = 400 - 314
= 86
The probability that a point picked at random in the square is in the shaded region will be 86/314. Thus option C is correct.
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Please help asap!!!!
Answer:
11
Step-by-step explanation:
There is a rather simple method to this.
The factor given is ( x - 2 ) and the dividend is ( 2x⁵ - 7x³ - x² + 4x - 1)
To find the remainder, we will take it as x - 2 = 0
We will get x as 2
Now, substitute the value.
2 ( 2 )⁵ - 7 ( 2 )³ - ( x )² + 4 ( 2 ) - 1
2 ( 32 ) - 7 ( 8 ) - ( 4 ) + 8 - 1
64 - 56 - 4 + 8 - 1
8 - 4 + 8 - 1
16 - 4 - 1
16 - 5
11
Hence, the remainder is 11.
At Wonderful Water park, the water trough ride cost $2.75 per ride. If you have $15. then how many times could you ride?
Answer:
The maximum number of rides is 5
Step-by-step explanation:
Let
x----> the number of rides
we know that
The inequality that represent this situation is
[tex]2.75x\leq 15[/tex]
Solve for x
Divide by 2.75 both sides
[tex]x\leq 15/2.75[/tex]
[tex]x\leq 5.45[/tex]
Round down
The maximum number of rides is 5
Answer:
The maximum number of rides is 5
answer is 5 i took the test
A rectangle prism has a length of 1 1/4 cm a width of 4 cm and a height of 3 1/4 cm what is the volume of this prism
Answer:
65/4 cm³, or 16.25 cm³
Step-by-step explanation:
Here, Volume V = (length)(width)(height). Those measurements are included here:
V = (1 1/4 cm)(4 cm)(3 1/4 cm), or
V = (5/4 cm)(4 cm)(13/4 cm)
V = (5 cm²(13/4 cm) = 65/4 cm³, or 16.25 cm³
A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet. How far below or above the deck is the coaster after the completion of the two hills?
Answer:
14 feet below. the deck.
Step-by-step explanation:
That would be (20 + 78 - 85 +103 - 110 ) feet above the ground
= 6 feet above the ground.
That is 20 - 6 = 14 feet below the deck.
In a contest, players have to pick marbles from a bag. The bag contains 30 blue marbles, 20 yellow marbles, 10 red marbles, and 40 green marbles. A player wins $7 on picking a green marble, loses $5 on picking a blue marble, loses $3 on picking a yellow marble, and wins $2 on picking a red marble.
How will you simulate this game without actually having 100 marbles in a bag?
A.
Use the numbers 1–10 to represent different marbles based on their probabilities.
B.
Use the numbers 1–25 to represent different marbles based on their probabilities.
C.
Use the numbers 1–17 to represent different marbles based on their probabilities.
D.
Use the numbers 1–4 to represent different marbles based on their probabilities.
Answer:
D
Step-by-step explanation:
There are 4 colors to choose from, so use numbers 1-4 to represent each color.
Please please help me
Answer:
(x - 5)² + (y + 3)² = 16
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
here (h, k) = (5, - 3) and r = 4, thus
(x - 5)² + (y - (- 3))² = 4², that is
(x - 5)² + (y + 3)² = 16 ← equation of circle
The result of subtracting two or more numbers is called
Answer:
Formally, the number being subtracted is known as the subtrahend, while the number it is subtracted from is the minuend. The result is the difference.
Step-by-step explanation:
The result of subtracting two or more numbers in mathematics is called the difference. In vector subtraction, this applies as we add the first vector to negative of the vector that needs to be subtracted, resulting in a difference vector. This is equivalent to subtracting scalar values.
Explanation:In mathematics, the result of subtracting two or more numbers is known as the difference. This concept also applies to vectors in a process called Vector Subtraction.
For instance, if we have two vectors A and B, and we wish to subtract B from A (usually written as A - B), we do so by adding the first vector, A, to the negative (-) of the second vector, B (written as A + (-B)). Here, -B (negative B) represents the same vector as B but in the opposite direction. The subtraction of A and B results in a difference vector, D, i.e., D = A - B.
The same principle is true for ordinary numbers. Take the numbers 5 and 2 for example. If we subtract 2 from 5 (5 - 2), it's equivalent to adding 5 and -2 (5 + (-2)). Here, the difference is 3.
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