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)
What is the resulting displacement when adding a vector of length 10 in the east direction to a vector of length 5 in the north direction?
+
Math question: Calculate the square root of 25, divide it by 2, subtract 3, multiply by 10, and add the sum to the square root of 16. Round the final result to the nearest whole number.
+
Question: Calculate the dot product of two vectors, u = (-2, 3, 4) and v = (1, -5, 2).
+
New questions in Mathematics
Simplify the expression sin³(x)+cos³(x), using trigonometric functions
Let the vectors be u=(-1,0,2) , v=(0,2,-3) , w=(2,2,3) Calculate the following expressions a)<u,w> b) &lt;2u- 5v,3w&gt;
5/8 x 64
String x = 5 Int y=2 System.out.println(x+y)
For a temperature range between -3 degrees Celsius to 5 degrees Celsius, what is the temperature range in degrees Farenheight
x/20*100
The main cost of a 5 pound bag of shrimp is $47 with a variance of 36 if a sample of 43 bags of shrimp is randomly selected, what is the probability that the sample mean with differ from the true mean by less than $1.4
Identify a pattern in the list of numbers.Then use this pattern to find the next number. 37,31,25,19,13
Solve this mathematical problem if 3/5 of a roll of tape measures 2m. How long is the complete roll?
In a grocery store, when you take out 3 peppers and 4 carrots, there are 26 peppers and 46 carrots left. How many peppers and carrots were there initially?
What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.
Suppose that you use 4.29 g of Iron in the chemical reaction: 2Fe(s) + 3 Cu2 + (aq) 2Fe 3 + (aq) + 3Cu(s ) - . What is the theoretical yield of Cu (s), in grams?
Your boss asks you to plan the sample size for a randomized, double-blind, controlled trial in the clinical development of a cure for irritable bowl disease. Current standard treatment shall be compared with a new treatment in this trial. The S3-guideline of AWM demonstrated a mean change of the summary score of the validated health related quality of life questionnaire at 8 weeks of 16 with standard deviation 23 under standard treatment. You quote the drop-out rate of 11% from literature (previous phase of clinical development). Your research yielded a clinically important effect of 4 that has been found to be the Minimal Clinically Important Difference (MCID). In order to demonstrate superiority of the new treatment over standard of care, you assume that the change in of the summary score of the validated health related quality of life questionnaire follows a normal distribution, and that the standard deviation is the same for both treatments. How many patientes would one need to recruit for the trial to demonstrate the clinically interesting difference between treatments at significance level 5% with 95% power?
Estimate the quotient for 3.24 ÷ 82
9.25=2pi r solve for r
List five numbers that belong to the 5 (mod 6) numbers. Alternate phrasing, list five numbers that satisfy equation x = 5 (mod 6)
prove that for sets SS, AA, BB, and CC, where AA, BB, and CC are subsets of SS, the following equality holds: (A−B)−C=(A−C)−(B−C)
A membership to the gym cost $25 per person in 1995. The membership cost has increased by an average $6 per person for each year since 1995. Write a linear equation for the cost of a gym membership for one person since 1995. What is the cost of a gym membership in 2009?
What is the percentage of nitrogen abundance in copper dinatrate Cu(NO3)2
The perimeter of a rectangular rug is 42 feet. The width is 9 feet. What is the length?