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
prisoha [69]
3 years ago
8

6. What is the value of x in the following system of equations? x + y = -10 y = x - 2

Mathematics
2 answers:
Maru [420]3 years ago
7 0

Answer:

X= -4

Step-by-step explanation:

Hello. For to solve that, you need to use the sustitution method:

1. You need clear X in the first equation and put in the second

X+Y = -10

X = -10-Y

2.  Y = X-2, then you replaced the X in this equation:

Y = (-10-Y) - 2

Y+2=-10-Y

2Y=-10-2

2Y= -12

Y= -12/2

Y=-6

3. Now you use the Y value for to solve X:

X=-10-Y, then

X =- 10-(-6)

X = -4

Kobotan [32]3 years ago
6 0
Plug in x-2 for y
x + x - 2 = -10
2x = 12, x = 6
The value of x is 6
You might be interested in
Can anyone help me solve this
kumpel [21]

Answer:

The answer to your question is a = 40, b = 5/8

Step-by-step explanation:

Data

  ab = 25

  log₄a - log₄b = 3

Process

1.- Use the law log of a quotient

               log₄ a/b = 3

2.- Convert the log to an exponent

                   a/b = 4³

                   a/b = 64      Equation l

                    ab = 25       Equation ll

3.- Solve equation l for a

                  a = 64b

4.- Substitute in equation ll

                   (64b)b = 25

-Simplify

                    64b² = 25

-Solve for b

                         b² = 25/64

                         b = 5/8

5.- Substitute the value of b to find a

                     a = 64(5/8)

-Simplification

                     a = 40                        

4 0
3 years ago
If Chris has 2 times as many nickels as quarters and they have a combined value of 210 cents, how many of each coin does he have
BlackZzzverrR [31]
Im pretty sure she has 6 quarters and 12 nickels since it it twice as much.

$0.25 x 6 =150

$0.5 x 12 =60

total = 210
8 0
3 years ago
This rectangle represents the base of a rectangular prism. The height of the rectangular prism is 56 m.
elena-14-01-66 [18.8K]

Answer:

1,960

Step-by-step explanation:

35 times 56 = 1,960

35 is the base, to get the base you do length times width.

the height is 56. To get the volume do base (or length times width) times hight.

Hope that helps!

5 0
3 years ago
Read 2 more answers
I have 93, 80 and 94 my homework is worth 10% so what us my grade?
Minchanka [31]
I think about 26.7  
 or something around there                                                                           
5 0
3 years ago
Read 2 more answers
Solve for x. <br> 3x+7 = -x-1
alekssr [168]

Answer: x = -2


Step-by-step explanation: 3x+7 = -x-1; add 1 to both sides: 3x+8=-x; subtract 3x from both sides: 8 = -4x; divide by -4 on both sides: -2 = x


4 0
3 years ago
Other questions:
  • Rita and Alicia are each paid by the hour reader Works 5 and 1/2 hours and earn $77 Eliseo Works 3 3/4 hours and $60 to hourly r
    7·1 answer
  • Help anyone. I want to be good at math
    6·2 answers
  • What is the solution to the equation x2 + 2x = 12?
    8·2 answers
  • Please help ASAP on #4,6 please I'll give you brainliest​
    8·1 answer
  • Kelly is reading a 1056-page book. During the past 8 days she has read 384 pages. At this rate, how many more days will it take
    7·1 answer
  • Factor <br> 2x^2-5x+3<br> need help
    6·2 answers
  • Which is the percentage in "27 is 15%of 180"<br><br>​
    10·1 answer
  • 1
    8·1 answer
  • Solve using Elimination<br><br> 3x+y=-9<br> y=5x+7
    8·1 answer
  • What triangle is this ? Pleaseee helppppp !!!!!! Will mark Brianliest correct answer !!!!!!!!!!!!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!