Sign In
Ask Question
Braylon Farley
Mathematics
1 September, 05:04
10x+4y + 12z=120
11x + 77y = 220
8x + 2y + 32z = 160
+4
Answers (
1
)
Kamryn Mccormick
1 September, 05:28
0
x=8.94; y = 1.58; z=2.02
Step-by-step explanation:
solve 10x+4y+12z = 120 → 5x+2y+6z = 60
8x + 2y + 32Z = 160 → 4x+y+16z = 80
To eliminate z multiply first equation by 16 and second equation by 6.
80x+32y+96z = 960
24x+6y+96z = 480
on subtractionwe get 56x+26y = 480
dividing by 2 we get, 28x + 13y = 240
Now we have a given equation 11x + 77y = 220 → x + 7y = 20
solving 28x + 13y = 240 and x + 7y = 20
28x + 13y = 240
28x + 216y = 560
subtracting we get, 203y = 320
y = 1.58
x = 8.94
z = 2.02
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“10x+4y + 12z=120 11x + 77y = 220 8x + 2y + 32z = 160 ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
24.51 kg round this to 1 decimal
Answers (1)
Round 72 to the nearest ten
Answers (2)
How do you solve 1000 (1+x) ^12=2000
Answers (1)
A recent magazine article stated that bone mineral density (BMD) may one day predict breast cancer risk in older women, according to a study in the Journal of the National Cancer Institute.
Answers (1)
What are the next two terms of the following sequence? - 3,1,5,9, ... A. - 7, - 11 B. 10, 11 C. 12, 15 D. 13, 17
Answers (1)
New Questions in Mathematics
The busty bee book club charges an annual membership fee of $10 and $4 per book you order. what will be your total cost of being in this club when you order 9 books? write an function rule for the total cost C (n) when you order n books.
Answers (1)
Find the zeros of the quadratic function. Solve by factoring. x^2+14x=-45
Answers (1)
Which property is shown? If m ABC = m CBD, then m CBD = m ABC reflexive property substitution property symmetric property transitive property
Answers (1)
How do you solve 4y^-3-x^2y^-1?
Answers (1)
A species' population dropped from 2000 in the year 2000 to 1200in the year 2011. Find the percent decrease in its population
Answers (1)
Home
»
Mathematics
» 10x+4y + 12z=120 11x + 77y = 220 8x + 2y + 32z = 160
Sign In
Sign Up
Forgot Password?