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
pochemuha
3 years ago
14

Solve using substitution -9x+7y=-15 and -8x+y=18​

Mathematics
2 answers:
bija089 [108]3 years ago
6 0

Answer:

x = 51/28

y= 24/7

Step-by-step explanation:

Kipish [7]3 years ago
4 0

Answer:

x=-3, y=-6. (-3, -6).

Step-by-step explanation:

-9x+7y=-15

-8x+y=18

------------------

y=18-(-8x)=18+8x=8x+18

----------------------------------

-9x+7(8x+18)=-15

-9x+56x+126=-15

47x+126=-15

47x=-15-126

47x=-141

x=-141/47

x=-3

-8(-3)+y=18

24+y=18

y=18-24=-6

x=-3, y=-6.

You might be interested in
How do you do this??????
slava [35]

Answer:

2:1

Step-by-step explanation:

There are 14 spoons (not sure what they are) and 7 eyes so it is 14:7

simplified it is 2:1

Hope this helps :)

4 0
3 years ago
Read 2 more answers
Y=2x^2 - 10x + 13<br> Find the value.
pishuonlain [190]
Image of graph The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.
6 0
3 years ago
The world record for the fastest typing speed is 212 words per minute. How many words per second is this? Round to the nearest t
taurus [48]

Answer:

3.5

Step-by-step explanation:

212 words / 60 seconds in a minute = 3.53 repeating


6 0
3 years ago
Read 2 more answers
Which is a true statement?
Lina20 [59]
D. X<17/13    TFJHJKHJBJGHGJHBJGJGJG
8 0
3 years ago
What number do u divide with 11 to get the answer 17
Reika [66]
17x11=187                                              need more character there done
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which expression is a difference?
    13·2 answers
  • How many pair of whole number have a sum of 110
    13·1 answer
  • Which of these inequalities has no solutions?
    12·1 answer
  • Stephanie wants to buy 's' tomato plants, and Diego wants to by 'd' tomato plants. Each plant costs $7. Stephanie will use a cou
    15·1 answer
  • How do i do 6 1/2% of $50
    7·1 answer
  • 8+n the answer is 45
    5·2 answers
  • If two similar rectangles have corresponding sides with a ratio of 2:3, what is the
    9·1 answer
  • I NEED HELP AND FAST PLEASE!!! I’m not sure if I chose the right answer or not!!
    7·2 answers
  • 3? Choose the THREE correct answers.
    10·1 answer
  • Simplify: 40x7- (-12x7)<br> Enter the original expression if it cannot be<br> simplified.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!