According to the condition given in the question that the basket contains red balls and yellow balls weighing 4300 g, the total number of yellow balls in the basket would be 55.
What is algebra?Algebra is a branch of mathematics that deals with mathematical symbols and the rules for manipulating these symbols, including solving equations and analyzing graphs
What is the difference between an equation and an expression?An equation is a statement of equality between two expressions, while an expression is a combination of numbers, variables, and mathematical operations. An equation is something that can be solved to find the value of the unknown, while an expression is a combination of numbers and operations that stands on its own.
Let there are R red balls and Y yellow balls in the basket,
As given in the question, each red ball weighs 35 g and each yellow ball weighs 40g, and the total weight of basket is 4300 g,
so, 35 * R + 40 * Y = 4300
Also, there are 60 red balls in the basket , so R =60,
35 * 60 + 40 * Y = 4300
therefore, Y = 55
Hence there are 55 yellow balls in the basket.
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What is the difference between circumcenter and centroid?
The intersection of a triangle's three medians is known as the centroid, and the point at which the perpendicular bisectors of its three sides meet is known as the circumcenter.
What is called centroid and circumcenter?The object's centre is represented by its centroid. The centroid of a triangle is where the triangle's three medians connect. The junction of all three medians is another way to describe it. The middle point of a side and the opposing vertex of a triangle are connected by a line known as the median.
The circumcenter of a triangle is the point where three perpendicular bisectors of its sides meet. A triangle's circumcenter is defined as the point at which the perpendicular bisectors of its own sides cross. In all other senses, the circumcenter is the point at which a triangle's sides intersect to form a bisector.
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Whats the value of x
Answer:
x = 50
Step-by-step explanation:
These two angles are supplementary angles which means their sum is equal to 180°.
We can write the following equation based on this information:
3x+5+x-25 = 180
Add like terms4x - 20 = 180
Add 20 to both sides4x = 200
Divide both sides by 4x = 50
what is angle of sides are 60.5,216 and 169.26
Using the law of cosines we know that the outfielder throws the ball 169.26 feet away.
What was the law of cosines?The law of cosines in trigonometry establishes a relationship between a triangle's side lengths and the cosine of one of its angles.
According to the Law of Cosines, c2=a2+b22ab cosC.
With the exception of the third component, which equals zero if C is a straight angle and the Pythagorean Theorem results, this is similar to the Pythagorean Theorem.
So, here, the pitcher's mound is 60.5 feet away from home plate.
Additionally, the ball traveled 216 feet when it was struck by the bat.
Allow the outfielder to toss the ball x feet away.
According to the diagram below:
x² = 216² + 60.5² - 2 * 216 * 60.5 * cos34°
x = 169.258748677 ⇒ 169.26 feet
Therefore, using the law of cosines we know that the outfielder throws the ball 169.26 feet away.
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Correct question:
Use the law of cosines to solve the problem. On a baseball field, the pitcher's mound is 60.5 feet from home plate. During practice, a batter hits a ball 216 feet. The path of the ball makes a 34° angle with the line connecting the pitcher and the catcher, to the right of the pitcher's mound. an outfielder catches the ball and throws it to the pitcher. how far does the outfielder throw the ball?
17 7/9 divided by 0. Please hurry I have to get this done soon. Thank uu :D
Answer:undefined
Step-by-step explanation:
Point M is the midpoint of AB, the coordinates of point a or -7, 2 and the coordinates of M are -2, two what are the coordinates of point B
The coordinates of point B of the line AB with M as a midpoint are; (-11, 2)
How to find the midpoint between two coordinates?The formula for the midpoint between two coordinates is;
(x, y) = (x₁ + x₂)/2, (y₁ + y₂)/2
For the line AB, we are told that M is the point and that we have the coordinates as;
A(-7, 2) and M(-2, 2). Thus, plugging in the relevant values gives;
(-2, 2) = (7 + x₂)/2, (2 + y₂)/2
Thus;
(7 + x₂)/2 = -2
(7 + x₂) = -4
x₂ = -11
Similarly, we have;
(2 + y₂)/2 = 2
2 + y₂ = 4
y₂ = 2
B coordinate is (-11, 2)
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someone explain, i did a and its just 12x + 36 but for part b I don't understand half a thing, I did something I did in a, I did x^2 + 12x + 36 -144 but then the answer was wrong someone please help me I have final exam tmrw and I'm gonna do really bad :(
Answer:
a. x²
b. 144 cm²
Step-by-step explanation:
You want to know an expression for the area of the four white triangles in the given figure, and you want to know that area when x = 12 cm.
a. Triangle areaIf you draw horizontal and vertical lines through the middle of the figure, you can see that for each white triangle there is a matching shaded triangle. That is, the shaded area is equal to the white area.
The shaded area is the square of the length of the side of the shaded square, so is ...
shaded area = x²
The white area is the same, so is ...
white area = x²
b. Area for x=12 cmUsing x = 12 cm, the formula from part (a) tells us ...
white area = (12 cm)² = 144 cm²
The total area of the four white triangles is 144 cm².
__
Additional comment
The relation between the side lengths of the shaded area and the side length of the total area is ...
2x/√2 = x+6
This has one solution: x = 6/(√2 -1) ≈ 14.485281 (cm).
The figure cannot be drawn to scale for any other value of x, so it is impossible for x=12 cm, unless the outside length is (x+4.97056...)
If you take the white triangles to be isosceles right triangles, each will have an area of A = 1/2bh = 1/2(x/√2)(x/√2) = x²/4. The four of them will have an area of 4(x²/4) = x². If you take the white area to be the overall area less the area of a square of side length x, then the area of the four triangles will be (x+6)² -x² = 12x+36. You will notice that these expressions give different values of the area of the white triangles when x=12. (See the previous comment about the value of x.)
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I’ll give brainliest please help! Using point slope form find the equation of the line with the given slope that passes through the given point
Answer:
Below
Step-by-step explanation:
Point -4, 6 slope = - 3
Point slope form of the line : ( y-y1) = m (x - x1)
(y-6) = -3 (x - -4)
y - 6 = -3 (x+4)
The sum and the product of the roots of 2x 2 − 6x + 10 = 0 respectively are
The sum of the roots of 2x² − 6x + 1 = 0 is 3 and the product is 0.5076.
What is roots?The values of variables that satisfy the given quadratic equation are known as its roots. In other words, x = α is a root of the quadratic equation f(x) if f(α ) = 0. The real roots of an equation f(x) = 0 are the x-coordinates of the points where the curve y = f(x) intersects the x-axis.
To find sum and the product we first need to find roots/zeroes of the quadratic equation 2x² − 6x + 1 = 0, i.e.
⇒ 2x² − 6x + 1
⇒ 2x²−6x + 1
Putting them in quadratic equation
[tex]$ \Rightarrow x={\frac {-b\pm {\sqrt {b^{2}-4ac}}}{2a}}[/tex]
[tex]$ \Rightarrow x={\frac {-(-6)\pm {\sqrt {(-6)^{2}-4(2)(1)}}}{2(2)}}[/tex]
[tex]$ \Rightarrow x = \frac{3 -\sqrt{7} }{2}[/tex], [tex]$ \Rightarrow x_2 = \frac{3 +\sqrt{7} }{2}[/tex]
⇒ x = 0.177124, x₂ = 2.822876
⇒ x = 0.18, x₂ = 2.82
The sum of the equation roots of 2x² − 6x + 1 = 0 is
0.18 + 2.82 = 3
The Product of the equation roots of 2x² − 6x + 1 = 0 is
0.18 × 2.82 = 0.5076
Thus, The sum of the roots of 2x² − 6x + 1 = 0 is 3 and the product is 0.5076.
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Afia chool i plotted at -8, -3 on a coordinate plane. Her babyitter houe i located at 8 , -3. What i the ditance between Afia chool and her babyitter houe?
The distance between Afia's school and her babysitter's house is 16 units.
Distance is a measurement of how far away two things or locations are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in ordinary language.
The distance between two points in a coordinate plane can be found using the distance formula:
d = √((x2 - x1)^2 + (y2 - y1)^2)
Where (x1, y1) and (x2, y2) are the coordinates of the two points, and d is the distance between them.
In this case, the coordinates of Afia's school are (-8, -3) and the coordinates of her babysitter's house are (8, -3).
Plugging these values into the distance formula:
d = √((8 - (-8))^2 + (-3 - (-3))^2)
d = √((8 + 8)^2 + (0)^2)
d = √(16^2)
d = √(256)
d = 16 units
Therefore, the distance between Afia's school and her babysitter's house is 16 units.
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In rectangular park that is 63 yards by 16 yards, a dog began in the northwest corner and ran south along the length of the park. Then the dog ran east along the width to the southeast corner. Finally, the dog ran back to the northwest corner. How far did the dog run?
If in rectangular park that is 63 yards by 16 yards, a dog began in the northwest corner and ran south along the length of the park and Finally, the dog ran back to the northwest corner. The dog ran 65 yards.
What is distance?Distance can be defined as how far an object is from another object.
Using the Pythagoreans theorem to find the distance
c² = √a² + b²
Let plug in the formula
c² = √63² + 16²
c² = √3,969 + 256
c = √4,225
c = 65 yards
Therefore the distance is 65 yards.
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The shape below has rotational symmetry.
(b) Write down the order of rotational symmetry.
The order of rotational symmetry is the number of times a shape can be rotated and still look the same.
What is the order of rotational symmetry?Generally, The amount of times that a form may be rotated through 360 degrees with maintaining its appearance is referred to as its rotational symmetry.
For instance, a circle has an order of rotational symmetry of infinity, which means that it can be rotated any number of times and still look the same.
On the other hand, a square has an order of rotational symmetry of 4, which means that it can be rotated by 90 degrees four times while maintaining its original appearance.
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Which of the following statement is correct regarding Sampling Distributions?a. The sampling distribution of the sample mean will be approximately normal.b. The mean of the sampling distribution of the sample mean will be equal to the population mean.c. Both A and B.d. None of the above.
Hence option b is the correct option i.e The sample mean's sampling distribution will be roughly normal.
The appropriate response to the question about Sampling Distributions is The sample mean will have a sampling distribution mean that is identical to the population mean.
The sampling distribution must then resemble the normal distribution as the sample size grows.
According to this, if the sample size is large enough, the sampling distribution of the mean will always be normally distributed. The sampling distribution of the mean will be normal regardless of whether the population has a normal, Poisson, binomial, or any other distribution.
A bell-shaped, symmetrical distribution known as a normal distribution has fewer observations the farther out from its center.
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Is 4x an exponential function?
Yes, 4x is an exponential function. An exponential function is one where there is a constant being raised to a variable.
Exponential functions involves exponents. An exponential function has a constant as its base and a variable as its exponent but not the other way round. if a function has a variable as the base and a constant as the exponent then it is a power function but not an exponential function. The exponential function is a type of mathematical function which are helpful in finding the growth or decay of population, money, price that are growing or decay exponentially. A basic exponential function from its definition is of the form f(x) = b x, where 'b' is a constant and 'x' is a variable. generally it refers to the positive valued function of a real variable. it can be extended to the complex numbers or generalized to other mathematical objects like matrices.
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ann and byron positioned themselves 35m apart on one side of a stream
Ann and Byron set up shop 35 meters apart on one side of a creek, with the height of the cliff on the other side of the stream being 106.73 meters.
what is triangle ?Since a triangle has three sides and three vertices, it is a polygon. It is a fundamental geometric shape. Triangle ABC is the moniker given to a triangle that has vertices A, B, and C. When the three points are not collinear, a singular plane and triangle are found in Euclidean geometry. A triangle is a polygon if it has three sides and three corners. The points where the three sides meet are known as the triangle's corners.
given
consider the triangles ABC and ACD
from the figure
∠DAC = 36°
∠CAB = 68°
AD = 35 m
we have to find the height of the cliff i.e. he length BC
i.e. the length BC
cosθ = adjacent side / hypotenuse
cos36° = 35 / AC
AC = 43.21 m
tan68° = BC / 43.21
BC = 43.21 * 2.47 = 106.73 m
Ann and Byron set up shop 35 meters apart on one side of a creek, with the height of the cliff on the other side of the stream being 106.73 meters.
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The castle tower has a height of 14 m.
Work out the height of the tree.
The height of the tree is 5 times of the castle. Then the height of tree is 70 m.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
The castle tower has a height of 14 m. The height of the tree is 5 times of the castle.
The height of the tree is calculated as,
⇒ 14 x 5
⇒ 70 m
The height of the tree is 70 m.
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The complete question is given below.
The castle tower has a height of 14 m. The height of the tree is 5 times of the castle. Work out the height of the tree.
3) Mary works at a factory assembling auto parts. She earns a fixed salary for the first 40
hours and then additional pay for any time over 40 hours. During one week, she worked 47
hours and earned $613.75. Another week she worked 51 hours and earned $678.75. What
is Mary's weekly salary and overtime pay per hour?
So on solving the provided question we cans ay that by unitary method earns 47 hours = 15.34375 * 47 = $721.15625
What is unitary method ?The unit technique is an approach to problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. The unit method, to put it simply, is used to extract a single unit value from a supplied multiple. For instance, 40 pens would cost 400 rupees, or the price of one pen. The process for doing this may be standardized. a single country. anything that has an identity element. (mathematics, algebra) (Linear algebra, mathematical analysis, mathematics of matrices or operators) Its adjoint and reciprocal are equivalent.
so here,
She earns a fixed salary for the first = 40hours.
he worked and earned $613.75
earns per hour = 613.75/40 = 15.34375
earns 47 hours = 15.34375 * 47 = $721.15625
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How do you solve the midline theorem of a triangle?
The midline theorem claims that cutting along the midline of a triangle creates a segment that is parallel to the base and half as long.
The condition for the midline theorem is that the two triangles must have the same size and shape, so all three sides have the same length, and all three angles have the same measure.
For the theorem, we draw a line through two points on either side of the triangle and then we prove that the line divides the sides into equal halves. Once proven that the sides are in two equal halves using congruency it is proved that the base and midline are parallel.
Since the base and midline are parallel to each other using the SAS rule of congruency therefore according to the theorem the segment is half as long as the base.
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What is the coefficient of x² in 3x³ 2x² x 1?
So on solving the provided question we can say that here, coefficient of x² in 3x³+ 2x² -x+ 1 is 2
What is the coefficient?A coefficient in mathematics is a polynomial, a series, or the multiplicative coefficient of a particular term in an expression. Typically numeric, however any expression is permitted. The term "parameter" can also refer to the coefficients themselves if they are variables. A number times a variable equals a coefficient. Coefficient examples include: The coefficient is 14 in phrase 14c 14c 14c. The coefficient is 1 for word g. multiplies the variable by this amount. example Given that "z" is a variable and that 6z is the definition of the term, the coefficient is 6. One is the coefficient of the square of x.
here,
coefficient of x² in 3x³+ 2x² -x+ 1 is 2
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(8,3); y =-1/4 x+7 parallel lines
The equation parallel to the given line is y=-1/4 x+5.
What is the equation of a line?The general equation of a straight line is y=mx+c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.
The given equation is y =-1/4 x+7 and the coordinate point is (8, 3).
Here, slope is -1/4
We know that, the slope of parallel lines are equal.
Now, substitute m=-1/4 and (x, y)=(8, 3) in y=mx+c, we get
3=-1/4 (8)+c
c=5
Substitute m=-1/4 and c=5 in y=mx+c, we get
y=-1/4 x+5
Therefore, the equation parallel to the given line is y=-1/4 x+5.
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What is the exponential of 16?
The exponential of 16, also known as [tex]e^{16[/tex], is the value of the mathematical constant e (approximately equal to 2.71828) raised to the power of 16.
To calculate e^16, we would use the following formula:
[tex]e^{16[/tex] = e x e x e x e x e x e x e x e x e x e x e x e x e = 8.222838 x [tex]10^6[/tex]
So, the exponential of 16 is approximately 8.222838 x [tex]10^6[/tex].
It's important to note that the exponential value of any number is a real number, the value of e is raised to the power of that number. The mathematical constant e, also known as Euler's number, is an important number in mathematics and is used in various branches such as calculus, statistics and probability. It has also been used in physics and engineering, it appears naturally in many processes such as radioactive decay, natural growth and decay of populations, and more.
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how do i solve n - 4 < 5
=> n-4<5
=> n-4+4<5+4
=> n<9
Here are the first four terms of a sequence.
28 23 18 18
Find the nth term of the sequence.
Answer:
8, 3
Step-by-step explanation:
28, 23, 18, 13
Subtract each term from the next term.
23 - 28 = -5
18 - 23 = -5
13 - 18 = -5
All differences are equal. When all differences are equal, you have an arithmetic sequence. The equal differences are called the "common difference." To find a new term, add the common difference to the previous term.
13 + (-5) = 13 - 5 = 8
8 + (-5) = 8 - 5 = 3
Answer: 8, 3
evaluate the integral (v3 to 1) 5 arctan 1/x dx
After integrating the expression [tex]$$I=\int_1^{\sqrt{3}} 5 \arctan \left(\frac{1}{x}\right) d x$$[/tex] we will get the value as: [tex]$I=\left(\frac{5 \sqrt{3}}{6}-\frac{5}{4}\right)^\pi+\frac{5}{2} \ln |2|$[/tex]
Integration by parts, also known as partial integration, is a technique used in calculus and more widely in mathematical analysis to determine the integral of a function's product in terms of the integral of the product of the function's derivative and antiderivative.
The integration of the result of two functions is the integration by parts. Typically, the two functions are shown as f(x) and g. (x). The first function, f(x), is chosen from the two functions in such a way that its derivative formula exists, while the second function, g(x), is chosen in such a way that its integral formula exists.
∫ f(x).g(x).dx = f(x) ∫ g(x).dx - ∫(f'(x) ∫g(x).dx).dx + C
We have, [tex]$$I=\int_1^{\sqrt{3}} 5 \arctan \left(\frac{1}{x}\right) d x$$[/tex]
We know that
[tex]\frac{1}{x}=arccot(x) \\I=5 \int_1^{\sqrt{3}} arccot(x) dx[/tex]
Integrating by parts
[tex]$$\int f g^{\prime}=f g-\int f^{\prime} g$$[/tex]
let us assume that,
[tex]$\quad f=\cot ^{-1}(x) \quad g^{\prime}=1$[/tex]
[tex]$I=5 \int_1^{\sqrt{3}} \cot ^{-1}(x) d x$[/tex]
[tex]$I=5\left[x \cot ^{-1}(x)-\int \frac{-x}{x^2+1} d x\right]$[/tex]
[tex]$I=5\left[x \cot ^{-1}(x)+\frac{1}{2} \ln \left|x^2+1\right|\right]_1^{\sqrt{3}}$[/tex]
[tex]$I=5\left[\left(\sqrt{3} \cot ^{-1}(\sqrt{3})+\frac{1}{2} \ln |4|\right)-\left(\cot ^{-1}(1)+\frac{1}{2} \ln |2|\right)\right]$[/tex]
[tex]$I=5\left[\frac{\sqrt{3} \pi}{6}+\ln 2-\frac{\pi}{4}-\frac{1}{2} \ln |2|\right]$[/tex]
[tex]$I=\left(\frac{5 \sqrt{3}}{6}-\frac{5}{4}\right)^\pi+\frac{5}{2} \ln |2|$[/tex]
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The correct question should be:
Evaluate the integral [tex]$$I=\int_1^{\sqrt{3}} 5 \arctan \left(\frac{1}{x}\right) d x$$[/tex]
If point (x, y) is reflected over the x-axis, the resulting point is (-x, y)
The given statement "If point (x, y) is reflected over the x-axis, the resulting point is (-x, y)" is true.
What is the reflection on x-axis?When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the x-axis is (x, -y).
The given statement is "If point (x, y) is reflected over the x-axis, the resulting point is (-x, y)".
When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the y-axis is (-x, y).
Therefore, the given statement is true.
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The sum of two numbers is 10. The larger number is 4 times the smaller number.
The system of equations used to represent this scenario is y = –x + 10 and y = 4x.
What is the larger number?
he system of equations used to represent this scenario is y = –x + 10 and y = 4x, where x and y are the two numbers.
To find the larger number, we can solve the system of equations by setting y = 4x in the first equation and solving for x.
y = –x + 10
4x = –x + 10
3x = 10
x = 10/3
So the smaller number is 10/3. To find the larger number, we know that it is 4 times the smaller number, which is 4(10/3) = 40/3.
Therefore, the larger number is 40/3.
Answer:
The larger number = 8
Step-by-step explanation:
Below is the system of equations:
y = -x + 10
y = 4x
Since both equations equal "y", we can set them equal to each other:
4x = -x + 10
4x + x = 10
5x = 10
x = 2
This means that at x = 2, the y-values of both equations are the same and is when the criteria of "the sum of two numbers are 10 and the larger number is 4 times the smaller number" is met
"x" is the smaller number. To find the bigger number, input "x" into either one of the equations in the system:
y = 4(2) = 8
sb help♀️.. i got moree
The Pythagorean theorem and the above information can be used to deduce that the diagonal SU has a length of 13.
What does Pythagorean Theorem mean?For right-angled triangles, the theorem is applicable. The side opposing the right angle is the longest side in every right-angled triangle and is referred to as the hypotenuse. The square on the hypotenuse's area is equal to the sum of the squares on its two shorter sides, according to the theorem. Pythagoras of Samos, a mathematician and religious figure who held the view that everything in the cosmos was made up of numbers, is the subject of the Pythagorean Theorem.Given :
It is known that RS=12 and ST=5 in the rectangle RSTU.
The steps listed below can be used to calculate the diagonal SU's length:
The Pythagorean theorem can be used to calculate the diagonal SU's length in step 1.
Step 2 - The following is the Pythagorean theorem:
H² = B² + P²
Where B is the base, P is the perpendicular, and H is the hypotenuse.
Step 3: Replace the known terms' values in the aforementioned expression.
SU² = 12² + 5²
Step 4: Condense the previous expression.
SU = √144 + 25
SU = 13
So, the length of the diagonal SU is 13.
The complete question is:
In rectangle RSTU it is known that RS=12 and ST=5. What is the length of diagonal SU?
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Please please please help me!!!! 20+ points! Thank you :)
Answer:
m∠1 = 32
Step-by-step explanation:
∠WXZ = 115
m∠2 = m∠1 + 51
x + x + 51 = 115
2x + 51 = 115
2x = 64
x = 32
Robin and Evelyn are playing a target game. The object of the game is to get an object as close to the center as possible. Each player’s score is the number of centimeters away from the center. Robin and Evelyn’s results from five rounds are shown.
Robin’s scores: 99, 108, 102, 107, 119
Evelyn’s scores: 125, 137, 138, 145, 145
The mean of Robin’s scores is 107. What is the mean of Evelyn’s scores?
it is 138
The mean of Evelyn’s scores based on the information will be 138.
How to calculate the mean?From the information, Robin and Evelyn are playing a target game, the object of the game is to get an object as close to the center as possible and each player’s score is the number of centimeters away from the center.
It should be noted that Robin and Evelyn’s results from five rounds are shown. The mean simply means the average of the numbers.
The mean of Evelyn’s scores based on the information will be:
= (125 + 137 + 138 + 145 + 145) / 5
= 690/5
= 138
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A store sells peanut butter in 28-ounce jars for $4.29 and in 16 ounce jars for $2.49. Find the price per ounce for each size jar and determine which jar is the better buy. Explain.
By finding the unit rates for the two jars, we will see that the better option is the 28-ounce jar.
Which size of jar is the better buy?To find wich option is the better buy, we need to find the unit rate for each of these jars.
To get the unit rate, we need to take the quotient between the cost of each jar and the volume of peanut butter that each jar has.
We know that the jar of 28 ounces has a cost of $4.29, then its unit rate is:
U = ($4.29)/28 oz = $0.153 per oz.
This means that with this jar, each ounce costs $0.153
For the 16 ounce jar, the cost is $2.49, then the unit rate is:
U' = $2.49/16 oz = $0.156 per oz.
So here the cost per ounce is larger, then the better option is the 28-ounce jar.
Learn more about unit rates by reading:
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please what is 4 times 5
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12
Answer:20
Step-by-step explanation: 5+5+5+5
Answer:
4 times 5 is equal to 20.
Step-by-step explanation: