Answer:
2
Step-by-step explanation:
nnnbvcjehhejje jsjvshvsjekke melkhe
2
Given the coordinates, classify AQRT by by its sides. Q(-2, -1), R(1, 5), T(-8,-4)
If necessary, round to the tenths place.
QR
Classify:
RT=
QT
To classify a quadrilateral by its sides, we need to calculate the distance between each pair of its vertices.
The distance between Q and R is the square root of ((1-(-2))^2 + (5-(-1))^2) = square root of (3^2 + 6^2) = square root of (9+36) = square root of 45 = 6.7
The distance between R and T is the square root of ((-8-1)^2 + (-4-5)^2) = square root of (9+81) = square root of 90 = 9.5
The distance between Q and T is the square root of ((-8+2)^2 + (-4+1)^2) = square root of (10+5) = square root of 15 = 3.87
If the quadrilateral is a rectangle, two sides of it have to be equal, so in this case, AQRT is not a rectangle.
If the quadrilateral is a rhombus, all four sides have to be equal, so in this case, AQRT is not a rhombus.
If the quadrilateral is a square, all four sides have to be equal, so in this case, AQRT is not a square.
If the quadrilateral is a trapezoid, two adjacent sides are parallel, so in this case, AQRT is not a trapezoid.
If the quadrilateral is a parallelogram, two pairs of opposite sides are parallel, so in this case, AQRT is not a parallelogram.
If the quadrilateral is a kite, two pairs of sides have the same length, so in this case, AQRT is not a kite.
So the only possible classification is that AQRT is a general quadrilateral.
so we have:
QR = 6.7
RT = 9.5
QT = 3.87
Help me please I need help in this math
Answer:
Step-by-step explanation:
AB
away fram house
2km 4mins
rate: 1km\minute
BC
away from house
5km 6mins
rate:0.83km\minute
CD
niether
0km 9mins
no rate
DE
toward house
6km 15mins
0.4km\minute
q. a rectangular garden measures 60 feet by 25 feet. a fence completely encloses the garden. what is the length, in feet, of the fence?
The length of fence is 170feet if a rectangular garden measures 60 feet by 25 feet. Fencing is used to cover the garden from any unwanted animals.
A fence is defined as the structure that encloses an area, typically outdoors, and is usually constructed from the posts that are connected by boards, wire, rails or netting.
We know very well that the length of the fencing can be found by the perimeter of rectangle.
Perimeter of rectangle is given by =2×(length + breadth) or
=>P=2L +2W
if L is the length of rectangle and W is the width of rectnagle
Now, here we have length of rectangular garden as 60 feet and width as 25 feet
=>P=2×60+2×25
=>P=120+50
=>P=170feet
Hence, required length of fence is 170 feet.
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Use the numbers to place the companies in order of greatest comparative advantage to least comparative advantage in
producing large tubes of toothpaste.
O 2.1.3.4
O 4.1,2,3
O 4,3,1,2
The companies in order of greatest comparative advantage to least comparative advantage in producing large tubes of toothpaste is 4, 3, 1, 2 that is option C.
Use the numbers to place the companies in order of greatest comparative advantage to least comparative advantage in producing large tubes of toothpaste.
Toothpaste company
Large tubes
Small tubes
1) Sparkling
100 per hour
200 per hour
2) Bright White
100 per hour
250 per hour
3) Fresh!
200 per hour
250 per hour
4) Mint
150 per hour
150 per hour
Formula for comparative advantage is
CA=rate of producing large tubes/rate of producing small tube
For 1 Sparkling:
CA = 100/200
CA = 0.5
For 2 Bright White:
CA = 100/250
CA = 0.5
For 3 Fresh:
CA = 200/250
CA = 0.8
For 4 Mint:
CA = 150/150
CA = 1
thus, to place the companies in order of greatest comparative advantage to least comparative advantage in producing large tubes of toothpaste is 4, 3, 1, 2.
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Complete question:
Use the numbers to place the companies in order of greatest comparative advantage to least comparative advantage in
producing large tubes of toothpaste.
2.1.3.4
4.1,2,3
4,3,1,2
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Submit
Mark this and retum
Select the correct statement:
(this is only briefly mentioned in the video, if you have a difficult time finding it, or just want to make sure you answer is correct, you can find the answer in the book too)
Group of answer choices
Freud is not a stage theorist
Freud is a stage theorist
Freud is a stage theorist. Sigmund Freud, the renowned Austrian neurologist and psychoanalyst, is widely recognized as one of the pioneers in the field of psychoanalysis.
He proposed a developmental theory that included psychosexual stages of development. According to Freud, human development progresses through distinct stages, each characterized by a specific focus on different erogenous zones. These stages include the oral stage, stage, phallic stage, latency stage, and genital stage. Freud believed that the way individuals navigate these stages influences their personality and psychological well-being in adulthood.
Although Freud's stage theory has been critiqued and modified over time, his ideas regarding the importance of early childhood experiences and unconscious processes have had a profound impact on psychology and continue to shape our understanding of human development.
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We consider the measurable space (Ω,F) where Ω={ω1,ω2,ω3,ω4,ω5,ω6} and F=P(Ω). We define the probability measure P on Ω by P(ωi)=21i. We then define the random variables X and Y by Y(ωi)=(−1)i, and X(ωi)={1−1 if i≤3 if i>3 We also define Z=X+Y. (4.1) List all the sets in σ(X) (4.2) Determine E[Y∣X] and E[Z∣X] by specifying the value of each random variable for each ωi. (6) (4.3) Compute E[Z∣X]−E[Y∣X]
(4.1) The sets in σ(X), the sigma-algebra generated by random variable X, can be determined by considering the pre-images of X. Since X can take two possible values, 1 and -1/2, the sets in σ(X) will be all possible combinations of these values. Therefore, the sets in σ(X) are:
{∅, Ω, {ω1, ω2, ω3}, {ω4, ω5, ω6}, {ω1, ω2, ω3, ω4, ω5, ω6}}.
(4.2) To determine E[Y|X] and E[Z|X], we need to find the conditional expectations of Y and Z given X for each ωi.
For Y:
E[Y|X=1] = Σ P(ωi|X=1)Y(ωi) = P(ω1|X=1)Y(ω1) + P(ω2|X=1)Y(ω2) + P(ω3|X=1)Y(ω3) + P(ω4|X=1)Y(ω4) + P(ω5|X=1)Y(ω5) + P(ω6|X=1)Y(ω6)
= 0*(-1) + 0*(-1) + 1*(-1) + 0*(-1) + 0*(-1) + 0*(-1) = -1.
E[Y|X=-1/2] = Σ P(ωi|X=-1/2)Y(ωi) = P(ω1|X=-1/2)Y(ω1) + P(ω2|X=-1/2)Y(ω2) + P(ω3|X=-1/2)Y(ω3) + P(ω4|X=-1/2)Y(ω4) + P(ω5|X=-1/2)Y(ω5) + P(ω6|X=-1/2)Y(ω6)
= 1*(-1) + 1*(-1) + 0*(-1) + 1*(-1) + 1*(-1) + 1*(-1) = -6.
For Z:
E[Z|X=1] = Σ P(ωi|X=1)Z(ωi) = P(ω1|X=1)Z(ω1) + P(ω2|X=1)Z(ω2) + P(ω3|X=1)Z(ω3) + P(ω4|X=1)Z(ω4) + P(ω5|X=1)Z(ω5) + P(ω6|X=1)Z(ω6)
= 0*(1-1) + 0*(1-1) + 1*(1-1) + 0*(1+1) + 0*(1+1) + 0*(1+1) = 0.
E[Z|X=-1/2] = Σ P(ωi|X=-1/2)Z(ωi) = P(ω1|X=-1/2)Z(ω1) + P(ω2|X=-1/2)Z(ω2) + P(ω3|X=-1/2)Z(ω3) + P(ω4|X=-1/2)Z(ω4) + P(ω5|X=-1
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Use logarithmic differentiation to find the derivative of the function y=x^2x
The derivative of the function y = x^2x using logarithmic differentiation is dy/dx = x^2x(2 + 2ln(x)).
To find the derivative of the function y = x^2x using logarithmic differentiation, we follow these steps:
Take the natural logarithm of both sides of the equation:ln(y) = ln(x^2x)Apply the logarithmic property to simplify the equation:ln(y) = (2x)ln(x)Differentiate both sides of the equation implicitly:(1/y) * dy/dx = (2x)(1/x) + ln(x)(d/dx)(2x)Simplify the equation:(1/y) * dy/dx = 2 + 2ln(x)Multiply both sides of the equation by y:dy/dx = y(2 + 2ln(x))Substitute the original function back into the equation:dy/dx = x^2x(2 + 2ln(x))Learn more:About logarithmic differentiation here:
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To find the derivative of the function y = x^(2x) using logarithmic differentiation, we take the natural logarithm of both sides, apply logarithmic properties, and then differentiate implicitly.
Start by taking the natural logarithm of both sides of the equation:
ln(y) = ln(x^(2x))
Apply the power rule of logarithms to simplify the expression:
ln(y) = 2x * ln(x)
Now, differentiate both sides of the equation implicitly with respect to x:
(1/y) * dy/dx = 2 * ln(x) + 2x * (1/x)
Simplify the expression:
(1/y) * dy/dx = 2 * ln(x) + 2
Multiply both sides by y to isolate dy/dx:
dy/dx = y * (2 * ln(x) + 2)
Substitute the original value of y = x^(2x) back into the equation:
dy/dx = x^(2x) * (2 * ln(x) + 2)
The derivative of the function y = x^(2x) using logarithmic differentiation is dy/dx = x^(2x) * (2 * ln(x) + 2). Logarithmic differentiation is a useful technique for differentiating functions that involve exponentials or complicated algebraic expressions, as it allows us to simplify the calculation by taking the logarithm of both sides and then differentiating implicitly.
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Jared paints salt and pepper shakers and sells them in pairs. Today, he received 29 orders! How many shakers will he paint?
Answer: 58 Shakers
Step-by-step explanation:pairs mean 2 and 29 * 2 = 58
hope this helps :)
The price of a gallon of unleaded gas was $2.87 yesterday. Today, the price fell to $2.80. Find the percentage decrease. Round your answer to the nearest tenth of a percent
How do you multiply mixed fractions?
Thanks :)
Given a hashing function H(x) = y, where y is an n=128 bit output:
1. find the number of computations(hashes) required for finding a collision at 80% and 10% probabilities. Provide figures with 4 decimals.
2. you’ve access to a computer that can process a trillion hashes per second, how long will it take to find a collision at 10% probability?
1. The number of computations (hashes) required for finding a collision at 80% and 10% probabilities is 1.8447 x 10^19.
2. It will take approximately 47,891 seconds (or 13.3 hours) to find a collision at 10% probability.
The number of computations (hashes) required for finding a collision at 80% and 10% probabilities depends on the size of the hash function output. Let's assume a hash function output size of 128 bits for this example.
For finding a collision at 80% probability, we need to use the birthday attack algorithm. The number of hashes required can be calculated using the following formula:
N = sqrt((2^(n+1))*ln(1/(1-p)))
where n is the size of the hash output in bits (n=128 in this case), p is the desired probability of finding a collision (p=0.8 in this case), ln is the natural logarithm, and sqrt is the square root function.
Substituting the values, we get:
N = sqrt((2^(128+1))*ln(1/(1-0.8))) = 2^64.3155 = 1.8447 x 10^19
Therefore, we need 1.8447 x 10^19 hashes to find a collision at 80% probability.
For finding a collision at 10% probability, we can use the following formula:
N = sqrt((2^(n+1))*ln(1/(1-p)))
Substituting the values, we get:
N = sqrt((2^(128+1))*ln(1/(1-0.1))) = 2^55.9724 = 4.7891 x 10^16
Therefore, we need 4.7891 x 10^16 hashes to find a collision at 10% probability.
If we have a computer that can process a trillion hashes per second, we can calculate the time required to find a collision at 10% probability as follows:
time = N / rate
where N is the number of hashes required to find a collision (N=4.7891 x 10^16), and rate is the rate of hashes that the computer can process per second (rate=1 trillion = 1 x 10^12).
Substituting the values, we get:
time = (4.7891 x 10^16) / (1 x 10^12) = 4.7891 x 10^4 seconds
Therefore, it will take approximately 47,891 seconds (or 13.3 hours) to find a collision at 10% probability with a computer that can process a trillion hashes per second.
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What is the equation in point-slope form of the line that passes through the point (−1, −4) and has a slope of –3? Drag and drop the appropriate number, symbol, or variable to each box. Response areaResponse areaResponse area=Response area(Response areaResponse areaResponse area)
\(\huge\boxed{\boxed{Hello!}}\)
We are given the slope of the line and a point that it passes through.
We can use the Point-Slope Formula:
\(\huge\boxed{\boxed{y-y1=m(x-x1)}}\)
Where
y1 stands for y-coordinate of the point
m stands for the slope of the line
x1 stands for the x-coordinate of the point
Plug in the values and solve:
y-(-4)=-3(x-(-1)
y+4=-3(x+1)
y+4=-3x-3
y=-3x-3-4
y=-3x-7
\(\huge\boxed{\mathbb{ANSWER:{\boxed{\sf{y=-3x-7}}}}}}\)
\(\bigsta\)\(\bigstar\) Hope it helps!
\(\bold{Enjoy~your~day!}\)
\(\rm{FabulousKingdom:-)\)
Find the length of segment EG. Show all the work
Answer:
Hi I love you and I miss you
I don't know the answear sorry
So
EG=y+5=2.5+5=7.5
PLEASEEE HELPP I WILL MARK BRAINLIESTTT
Answer:
48 units squared
Step-by-step explanation:
You can find the number of squares in each sector by multiplying by the width and height.
So we have 4 boxes that have 10 squares each giving us 40 squares for the 4 boxes plus the other 2 boxes that have 4 squares each.
4 * 10 + 2 * 4 = 48
We get 48 inches squared.
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Cheers!
find an equation, or a set of equations, to describe the set of points that are equidistant from the points p(−8, 0, 0) and q(−2, 0, 0).
The plane is defined by the equation, x = -3.
What do we mean by equations?A mathematical statement made up of 2 expressions joined by an equal sign is known as an equation. 3x - 5 = 16 is an example of an equation. We get the value for the variable x as x = 7 after solving this equation.To find the equation:
The distance from p(-9, 0, 0) seems to be:
d = sqrt((x+9)² + y² + z²)The separation from q(3,0,0) would be:
d = sqrt((x-3)² + y² + z²)Let's make them the same size as follows;
sqrt((x+9)² + y² + z² ) = sqrt((x-3)² + y² + z² )Square both sides before simplifying:
(x+9)² + y² + z² = (x-3)² + y² + z² x² + 18x + 81 + y^2 + z^2 = x^2 - 6x + 9 + y² + z² 18x + 81 = - 6x + 9 24x + 81 = 9 24x = -72 x = -3Therefore, the plane is defined by the equation, x = -3.
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The complete question is given below;
Find an equation, or a set of equations, to describe the set of points that are equidistant from the points p(−9, 0, 0) and q(3, 0, 0). (enter your answers as a comma-separated list of equations.)
What is the lateral surface area of a cube with a side length of 7 inches
Answer:
294 (i think not sure so plz double check if you can )
Step-by-step explanation:
Answer:
196
Step-by-step explanation:
Please help 30 points
I graphed the seamos out already and the question are in a separate picture
Answer: On interval f(x) is increasing = \(( -\infty, -2)\)
On interval f(x) is decreasing = \(( -\infty, -2)\)
Step-by-step explanation:
The given function: \(f(x)=-(x+2)^2+4\)
The graph of the function is attached below
In graph , function is increasing till point (-2,4) or x=-2 and then it is decreasing.
So f(x) is increasing in \(( -\infty, -2)\) and decreasing in \((-2, \infty)\)
So, On interval f(x) is increasing = \(( -\infty, -2)\)
On interval f(x) is decreasing = \(( -\infty, -2)\)
What is the range of possible sizes for side x?
If x is the largest side :
x < 4.1 + 1.3x < 5.4If 4.1 is the greatest side :
4.1 < x + 1.3x > 2.8Range of possible sizes for side 'x' :
2.8 < x < 5.4Please help me with this question I’m stuck!!!
Answer: 4 yards
Step-by-step explanation:
The diameter is equal to the radius times 2.
We will multiply the given radius by 2 to find the diameter.
2 yards * 2 = 4 yards
Answer: 4 yards
Step-by-step explanation: Since the radius is half of the circle, you multiply it by two to get the diameter.
Which type of triangle can be constructed with a 50° angle between two 8-inch sides? A. Equilateral B. Isosceles C. Scalene D. Obtuse.
The correct option is (C) Isosceles. An Isosceles triangle can be constructed with a 50° angle between two 8-inch sides.
This is because isosceles triangle having two sides that are equal in length, and have 50° angle, which is acute angle, that is less than 90°. This state that the remaining angle in the triangle must also be acute triangle, as the sum of all angles in a triangle must equal 180°.
This means that the remaining angle must be 80° (i.e. 180 - 50 = 80). An isosceles triangle is triangle consisting of two sides of equal length and two angles of equal measure. The two equal sides that make up the isosceles triangle are referred to as the base and the remaining side is height or altitude.
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Can I please get help with this?
\(\pi \times d\)
22/7×21.6
=67.88
=70
1. Determine whether the stress function = 50x² - 60xy - 70y² satisfies the conditions of compatibility for a two-dimensional problem. Obtain the stress distribution in the matrix plate. Also draw a sketch showing the boundary stresses on (tensor) form. [4+4+2 points]
The stress function satisfies the conditions of compatibility for a two-dimensional problem.
Given stress function is 50x² - 60xy - 70y²
To determine whether the stress function satisfies the conditions of compatibility for a two-dimensional problem, it is required to find the strains and then check for compatibility equations.
Strain components are given as,
εx = ∂υ/∂x + (du/dx)
εy = ∂υ/∂y + (du/dy)
γxy = ∂υ/∂y + (du/dx)
Here,
υ = 50x² - 60xy - 70y²
du/dx = 100x - 60
ydu/dy = -60x - 140y
∂υ/∂x = 100x - 60y
∂υ/∂y = -60x - 140y
∂²υ/∂y² = -140
∂²υ/∂x² = 100
Now,εx = 100x - 60
yεy = -140y - 60
xγxy = -60y - 60x
Taking derivative of εy w.r.t x,
∂(εy)/∂x = -60
Similarly, taking derivative of εx w.r.t y,
∂(εx)/∂y = -60
∴ The stress function satisfies the conditions of compatibility for a two-dimensional problem.
Stress components are given as,
σx = (C11εx + C12εy)
σy = (C21εx + C22εy)
τxy = (C44γxy)
Here,C11 = C22 = 100, C12 = C21 = -60 and C44 = 0
Therefore,
σx = 100(100x - 60y) - 60(-140y - 60x)
= 19600x - 8800
yσy = -60(100x - 60y) + 100(-140y - 60x)
= -19600y + 8800x
τxy = 0
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Below is the least squares regression output for tree #2. Simple linear regression results: Dependent Variable: leaf water potential Independent Variable: sap flow velocity leaf water potential 0.345-0.0552 sap flow velocity Sample size: 6 R-sq 0.99115489 Find the value of the correlation coefficient based off of R-Square.
The value of the correlation coefficient based on the provided R-squared is approximately 0.995562, indicating a strong positive linear relationship between leaf water potential and sap flow velocity for tree #2.
The correlation coefficient, denoted as "r," is a measure of the strength and direction of the linear relationship between two variables.
It ranges between -1 and 1, where -1 indicates a perfect negative correlation, 1 indicates a perfect positive correlation, and 0 indicates no correlation.
In the given least squares regression output, the value of R-squared (R-sq) is provided as 0.99115489.
R-squared represents the proportion of the total variation in the dependent variable that can be explained by the independent variable(s).
It is calculated as the squared value of the correlation coefficient (r).
To find the value of the correlation coefficient based on R-squared, we take the square root of R-squared:
r = √(R-sq)
Using the given value of R-squared (0.99115489), we can calculate the correlation coefficient:
r = √(0.99115489) ≈ 0.995562
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Find the distance between (-4, 2) and (2, 9). Round your answer to the nearest tenth, if necessary.
please hep me asap!!!
Use a change of variables (and the Jacobian) to find the volume of the solid region lying below the surface z = f(x,y) and above the plane region R. Picture of the solid
f(x,y) = (x+y)ex-y
R: the region of the xy-coordinate plane bounded by the square with vertices (4,0), (6,2),
(4,4), and (2,2) i need to know how to solve this problem for my test today, thaks
The volume of the solid region is approximately 10.4109 cubic units.
To find the volume of the solid region lying below the surface z = f(x,y) and above the plane region R, we can use the formula:
V = ∬R f(x,y) dA
where dA is the area element in the xy-plane and the double integral is taken over the region R.
To evaluate this integral, we first need to perform a change of variables. Let u = x + y and v = x - y. Then the inverse transformations are x = (u + v)/2 and y = (u - v)/2. The Jacobian of this transformation is:
J = ∂(x,y) / ∂(u,v) = 1/2
Next, we need to express the surface z = f(x,y) in terms of u and v. Using the substitutions x = (u + v)/2 and y = (u - v)/2, we get:
f(x,y) = (x+y)ex-y = [(u+v)/2 + (u-v)/2]e(u-v)/2 = ueu/2
So the volume of the solid is:
V = ∬R f(x,y) dA
= ∬R ueu/2 dA
= ∫₂⁴ ∫₂⁶ (u/2)e^(u/2) du dv (using the limits of integration for R in terms of u and v)
= ∫₂⁶ [e^(u/2)u²/4] from 2 to 4 dv
= ∫₂⁴ [e^(u/2)u²/4] from u-2 to 6 du
= 16(e^3 - e^2)/3
Therefore, the volume of the solid region is approximately 10.4109 cubic units.
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a 50 foot ladder is set against the side of a house so that it reaches up 48 feet. of mila grabs the ladder at its base and pulls it 6 feet farther from the house, how far up the side of the house will the ladder reach now?
The ladder on pulling 6 feet father from the house now reaches 45.83 feet, which is lower than previous height.
The distance between ladder and house, the distance till ladder reaches and length of ladder given by Pythagoras theorem. The distance till ladder reaches is perpendicular, ladder is hypotenuse and the base is horizontal distance between the two. So, finding the base first.
Base² = 50² - 48²
Base² = 2500 - 2304
Base² = 196
Base = ✓196
Base or horizontal distance = 14 feet.
Now, on moving 6 feet, the horizontal distance will be 14 + 6 = 20 feet. Finding the new height or perpendicular now.
50² = 20² + Perpendicular²
Perpendicular² = 2500 - 400
Perpendicular² = 2100
Perpendicular = 45.83 feet
Hence, the ladder now reached to 45.83 feet height of the house.
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numa prova de múltipla escolha com 30 questões, o aluno ganha 3 pontos por cada questão que acerta, mas perde 2 pontos por cada questão que erra. Marcelo resolveu todas as questões dessa prova e conseguiu 50 pontos. Quantas questões ele acertou?
Answer:
Marcelo acertou 22 questões.
Step-by-step explanation:
Vamos representar
Questões que acerta = a
Questões que erra = b
a + b = 30 .......... Equação 1
a = 30 - b
o aluno ganha 3 pontos por cada questão que realizar, mas perde 2 pontos por cada questão que ocorrerá.
Matematicamente:
3 × a - 2 × b = 50
3a - 2b = 50 pontos ............. Equação 2
Substitua 30 - b por a na Equação 2
3 (30 - b) - 2b = 50
90 - 3b - 2b = 50
90 - 5b = 50
Colete termos semelhantes
90 - 50 = 5b
5b = 40
b = 40/5
b = 8
Questões que erra = b
Marcelo, portanto, perdeu 8 questões.
Dizem-nos que ele respondeu todas as 30 questões. Portanto, se ele perdeu 8 questões, o número de questões acertadas é representado pela Equação 1
a + b = 30 .......... Equação 1
a + 8 = 30
a = 30 - 8
a = 22 questões.
Portanto, ele acertou 22 questões.
Solve to find numeric values for x and y in the following two equations
x−2y=13
3x+y=4
Use the space below or use a separate sheet of paper to clearly show each step required to find x and y.
The solution is x = 4/3 and y = -35/6.
The given equations are x - 2y = 13 and 3x + y = 4.
We need to find the numeric values of x and y by solving the given system of equations.
Rearrange the first equation to get x in terms of y.
x - 2y = 13Add 2y to both sidesx = 2y + 13
Substitute this value of x in the second equation.3x + y = 43(2y + 13) + y = 46y + 39 = 4
Subtract 39 from both sides6y = -35y = -35/6Now we have a value of y.
Substitute this value in either of the original equations to find the value of x.
x - 2y = 13x - 2(-35/6) = 13x + 35/3 = 13
Subtract 35/3 from both sidesx = 4/3
Therefore, the solution is x = 4/3 and y = -35/6.
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