Question

perform the solution of the mathematical problem, given s: x= 3-5r, y= 6+kr, z=-1+4r l: 2x+3y+z= 12, 2x+5y=14 find the real number of K of so that the lines are parallel

289

likes
1446 views

Answer to a math question perform the solution of the mathematical problem, given s: x= 3-5r, y= 6+kr, z=-1+4r l: 2x+3y+z= 12, 2x+5y=14 find the real number of K of so that the lines are parallel

Expert avatar
Seamus
4.9
99 Answers
Resposta = Vamos resolver este sistema de equações para encontrar o valor de \(k\) tal que as retas sejam paralelas. Dado sistema de equações: 1. \(x = 3 - 5r\) 2. \(y = 6 + kr\) 3. \(z = -1 + 4r\) 4. \(2x + 3y + z = 12\) 5. \(2x + 5y = 14\) Primeiro, vamos expressar a segunda equação em termos de \(x\): \[ y = 6 + kr \] \[ 3y = 18 + 3kr \] \[ y = 6 + kr \] Agora, vamos substituir as expressões por \(x\) e \(y\) na terceira equação: \[ z = -1 + 4r\] E a quarta equação: \[2x + 3y + z = 12\] \[ 2(3 - 5r) + 3(6 + kr) + (-1 + 4r) = 12 \] Resolvendo para \(r\): \[ 6 - 10r + 18 + 3kr - 1 + 4r = 12 \] \[ 23 + (3k - 6)r = 12 \] \[ (3k - 6)r = 12 - 23 \] \[ (3k - 6)r = -11 \] \[ r = \frac{-11}{3k - 6} \] Agora, vamos considerar a quinta equação: \[2x + 5y = 14 \] \[ 2(3 - 5r) + 5(6 + kr) = 14 \] Substitua a expressão por \(r\): \[ 2(3 - 5 \cdot \frac{-11}{3k - 6}) + 5(6 + k \cdot \frac{-11}{3k - 6}) = 14 \] Resolvendo para \(k\): \[ 6 + \frac{110}{3k - 6} + 30 + \frac{5k \cdot (-11)}{3k - 6} = 14 \] \[ 36 + \frac{110 - 55k}{3k - 6} = 14 \] \[ 22 = \frac{55k - 110}{3k - 6} \] \[ 22(3k - 6) = 55k - 110 \] \[ 66 mil - 132 = 55 mil - 110 \] \[ 11k = 22\] \[ k = 2 \] Portanto, o valor de \(k\) para o qual as retas são paralelas é **2**.

Frequently asked questions (FAQs)
Question: Find the sum and product of a and b, given that a + b = 10 and ab = 24. (
+
Question: Calculate the square root of 169 and add it to the square root of 64, then divide the result by the square root of 36. Round your answer to two decimal places.
+
What is the equation of an ellipse with center (2, -1), major axis length 4, and minor axis length 2?
+
New questions in Mathematics
A normally distributed population has a mean of 118 with a standard deviation of 18. What score separates the lowest 72% of the distribution from the rest of the scores?
Consider numbers from 1 to 2023. We want to delete 3 consecutive, so that the avarage of the left numbers is a whole number. How do we do that
1. Suppose we have a good whose quantity supplied changed from 100 to 120 units when the price increased from $10 to $12 per unit. Compute the price elasticity of supply using the midpoint method
9b^2-6b-5
A job takes 9 workers 92 hours to finish. How many hours would it take 5 workers to complete the same job?
The actual length of an object is 1.3 m . If the blueprint uses a scale of 1 : 12 , what is the length of the line on the drawing?
how many arrangement can be made of 4 letters chosen from the 8 letters of the world ABBSOLUTE
4. Show that if n is any integer, then n^2 3n 5 is an odd integer
If the midpoint of point A on the x=3 line and point B on the y=-2 line is C(-2,0), what is the sum of the ordinate of point A and the abscissa of point B?
Pedro had 80% of the amount needed to buy a game. Of this amount, you spent 15% on a watch and therefore, you will need to add another R$640.00 to purchase this game. Is the value of the game?
3. A rock is dropped from a height of 16 ft. It is determined that its height (in feet) above ground t seconds later (for 0≤t≤3) is given by s(t)=-2t2 + 16. Find the average velocity of the rock over [0.2,0.21] time interval.
The following table shows the frequency of care for some animal species in a center specializing in veterinary dentistry. Species % Dog 52.8 Cat 19.2 Chinchilla 14.4 Marmoset 6.2 Consider that the center only serves 10 animals per week. For a given week, what is the probability that at least two are not dogs? ATTENTION: Provide the answer to exactly FOUR decimal places
A machine produces 255 bolts in 24 minutes. At the same rate, how many bolts would be produced in 40 minutes?
9.25=2pi r solve for r
Take the limit of (sin(x-4))/(tan(x^2 - 16) as x approaches 4.
Determine the Linear function whose graph passes through the points (6, -2) and has slope 3.
2x-5-x+2=5x-11
The area bounded by the curve y=ln(x) and the lines x=1 and x=4 above the x−axis is
Sarah is lining a square tray with 1 inch square tiles. the side length of the tray is 9 inches. How many tiles does Sarah need?
The domain of the function f(x)=x+7x2−144 is (−∞,), ( ,), and ( , ∞).