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
Rzqust [24]
3 years ago
10

The sum of three numbers is 10. Two times the second number minus the first number is equal to 12.

Mathematics
2 answers:
eimsori [14]3 years ago
8 0

<u>Answer:</u>

-10,1,19

<u>Step-by-step explanation:</u>

<u></u>

x+y+z = 10 (Equation 1)

2y-x= 12  (Equation 2)

x-y+2z = 7 (Equation 3)

(Equation 2): -x = -2y+12

                       x = 2y-12 (Equation 4)

(Equation 1) - (Equation 3): 2y-z = 3

                                              -z = -2y+3

                                               z = 2y-3 (Equation 5)

Substitute (4) and (5) into (1)

x+y+z = 10

(2y-12)+y+(2y-3) = 10

5y-15 = 10

5y = 5

y=1

Substitute y=1 into (2)

2y-x= 12

2(1)-x= 12

2-x= 12

-x= 12-2

-x= 10

x= -10

Substitute y=1 and x=-10 into (1)

x+y+z = 10

-10+1+z = 10

z-9 = 10

z = 10+9

z = 19

Order: x = -10, y = 1, and z = 19

Vlad [161]3 years ago
4 0

Answer:

-2 5 7

Step-by-step explanation:

You might be interested in
The solution is a =
Stells [14]

Answer:

1/6

Step-by-step explanation:

3 0
3 years ago
the cost of producing x laser printers is given by C(x)=325x + 2,300,000. Each printer can be sold for $450
PIT_PIT [208]

Answer:

C(450)=2,446,250

Step-by-step explanation:

C(450)=325(450)+ 2,300,000

C(450)=146,250+2,300,000

C(450)=2,446,250

6 0
3 years ago
A ( x + 3 ) &lt; 5x + 15 - x
german

Answer:

what

Step-by-step explanation:

8 0
3 years ago
Show 2/5 65 and 3/8 on the number line below
Elis [28]
2/5 is on the 4th tic mark, 65% is dead cent of the 6th and 7th tic mark, and 3/8 is most the way towards the 4th tic mark
4 0
2 years ago
Which statement about the quotient in the problem below is NOT true?
kipiarov [429]
The quotient is twice 405.5. Whenever dividing by .5 you multiply by 2 instead

C.)
8 0
3 years ago
Read 2 more answers
Other questions:
  • Identity the zero of the function y= x (x-4)(x+2)
    9·1 answer
  • A study of the checkout lines at the Safeway Supermarket in the South Strand area revealed that between 4 and 7 P.M. on weekdays
    5·1 answer
  • Find the slope of the line that passes through the pair of points
    15·1 answer
  • Yossi used to have a square garage with 286 ft of floor space. He recently built an addition to it. The garage is still a​ squar
    14·2 answers
  • Which equation represents the general from circle w
    10·1 answer
  • Find the area of shaded region where o is the centre of the circle<br>​
    9·1 answer
  • A stack of identical 8-centimeter-by-10-centimeter rectangular playing cards is sitting on a table. The stack is 1 centimeter hi
    12·1 answer
  • Which of the following is an equation of the line perpendicular to 3x+6y=12 and passing through (4,0)
    10·1 answer
  • Find the area of a regular
    9·1 answer
  • Blank hundreds is the same as 4 thousand
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!