1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
HACTEHA [7]
3 years ago
13

Use the elimination method to solve the following system of equations.

Mathematics
1 answer:
aliya0001 [1]3 years ago
3 0
The answer 
<span>2x - y + z = -3          (1)
2x + 2y + 3z = 2       (2)
3x - 3y - z = -4          (3)

</span> (1) - (2)              3y +2z =5
 3 .(1) - 2.(2)       3y+5z = -1<span>

let 's solve 
</span>3y +2z =5
3y+5z = -1<span>
z= - 2, and 3y =5+4=9,  y=3, so  </span>2x - 3 -2 = -3 implies x= 1
<span>
finally x=1, y=3 and z= -2
proof 
</span>2x - y + z = -3??     2.1 - 3 -2 = -3  (true)<span>

</span>
You might be interested in
Find the value of x by factoring x^2-9x-36=0
Citrus2011 [14]
(x+12)(x-3) Try this answer hopefully it is correct.
8 0
2 years ago
Kim bought her Supreme shoes for $52 on eBay. She marks up the shoes to resell on GOAT for 120% of the price.
Liula [17]
A) $10.40
B) $62.40
hope this helps!!
8 0
2 years ago
Read 2 more answers
A soup can has a diameter of 8 cm and a height of 12 cm. What is the volume of the soup can? Use 3.14 for Pi. A cylinder has a h
Alik [6]

Answer:

602.88

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which of the following expressions is a factor of the polynomial x 2 +3/2x-1
Elodia [21]

Answer:

\large \boxed{\sf \ \ \ (x+2)(x-\dfrac{1}{2}) \ \ \ }

Step-by-step explanation:

Hello,

let's solve

x^2+\dfrac{3}{2}x-1=0\\\\ 2x^2+3x-2=0 \ \text{multiply by 2}\\\\\\

\Delta=b^2-4ac=9+4*2*2=9+16=25

There are two solutions

x_1=\dfrac{-3-\sqrt{25}}{4}\\\\x_1=\dfrac{-3-5}{4}\\\\x_1=\dfrac{-8}{4}\\\\\boxed{x_1=-2}

And

x_2=\dfrac{-3+\sqrt{25}}{4}\\\\x_2=\dfrac{-3+5}{4}\\\\x_2=\dfrac{2}{4}\\\\\boxed{x_2=\dfrac{1}{2}}

So we can write

x^2+\dfrac{3}{2}x-1\\\\=(x-x_1)(x-x_2)\\\\=(x+2)(x-\dfrac{1}{2})

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

5 0
3 years ago
PLZ ANSWER ASAP DUE IN A FEW MINS
Len [333]

Answer:

Solution given:

diameter=14cm

radius [r]=14/2=7cm

now

area of semi circle or shaded region: ½πr²=½(3.14*7²)=76.93cm²[approximately]

5 0
3 years ago
Other questions:
  • A sum of money when invested for a definite period at r% simple interest will yield an interest of rm80 .using the same interest
    11·1 answer
  • Adam earns a base pay plus a commission for each car he sells at Crazy Carl's Cool Cars. His monthly salary is modeled by the fu
    9·1 answer
  • Which expression is even for all integers a and b?
    6·2 answers
  • What is the rule for the sum of angles?
    11·2 answers
  • What’s the lcm 5, 12, 20 ASAP
    9·2 answers
  • How is the place value pattern for decimal amount similar to the place value pattern for whole numbers?
    5·1 answer
  • PLEASE HELP 100 points and brainliest.<br> y= 3x — 5<br><br> y=6x — 8<br> solve with elimination
    15·1 answer
  • Diane is starting a business selling handmade necklaces. She has decided to invest an initial
    11·1 answer
  • MATH HELP PLEASE!!! USA TESTPREP!!
    5·2 answers
  • Jamie kept track of the total hours and minutes she worked this week at the local health food store.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!