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
GrogVix [38]
3 years ago
5

Solve the system of linear equations by substitution.

Mathematics
2 answers:
Darya [45]3 years ago
8 0
-X-8+8=-y+8
-x= -8y
X=8y
Ket [755]3 years ago
7 0

Answer:

The solution (x, y) = (-5, 3)

Step-by-step explanation:

-x - 8 = -y .... (1)

9y - 12 + 3x = 0 .... (2)

from equation (1)

-x = - y + 8 ... (3)

multiply equation (3) by -1

x = y - 8 ..... (4)

substituting equation (4) in equation (2)

9y - 12 + 3 ( y - 8) = 0

9y - 12 + 3y - 24 = 0

12y - 36 = 0

12y = 36

y = 36 /12

y = 3

Substitute y = 3 in equation (4)

x = y - 8

x = 3 - 8

x = -5

You might be interested in
To divide 572 divide 4, Stanley estimated to place the first digit of the quotient. In which place is the first digit of the quo
andreyandreev [35.5K]
It would go over the five, so im guessing the hundreds

6 0
3 years ago
The Taylor family went on vacation. They traveled 412 miles on Monday. At the end of the day Tuesday, the average speed of the c
mixer [17]

Answer:

d = 56x + 412

Step-by-step explanation:

To find the total number of miles traveled on Monday and Tuesday, use a linear equation to write the function.

y = mx+b where m is the speed or rate of change and b is the starting point.

The starting point on Tuesday is 412 miles. This is b.

The number of miles traveled on Tuesday is found by calculating 56 miles times the number of hours traveled.  This is the slope or m.

So the equation is d = 56h + 412.

7 0
3 years ago
If a quadratic equation has 4-i as a solution, what must the other solution be?
Luden [163]

Answer:

4+i

Step-by-step explanation:

A complex number usually took the form a+bi where a and b are real numbers and 'i' represents an imaginary number. For a quadratic equation, the complex roots for the root of a quadratic equation took the form known as complex conjugates. The complex conjugates are formed by changing the sign of the imaginary part.

SO, if a quadratic equation has 4-i as a solution, the other solution must be 4+i.

6 0
3 years ago
What is 100 divided by 6
iren2701 [21]
100/6 = 16.66 rounds to 16.7
6 0
3 years ago
A tractor trailer weighs 80,000 pounds. Two tractor trailers come upon a bridge with a sign saying it can only handle 100 tons.
NikAS [45]
Two tractor trailers would weigh 160,000 pounds, which is equal to 80 tons. 100-80= 20 tons that are still available.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Complete this pattern and write a short sentence explaining the pattern.
    6·1 answer
  • The center of a circle is located at (5, −5) . The radius of the circle is 3.
    9·1 answer
  • Pythagoras' Theorem:
    5·2 answers
  • Simplify the expression.
    13·1 answer
  • The diameters of two similar cylinders are in the ratio of 2 to 3 and the volume of the
    12·1 answer
  • Which graph is the graph of f(x)= (x - 1)/(x + 2) ?
    15·1 answer
  • So what is the answer to The spinner below is spun twice. What is the probability of the arrow landing on a 3 and then on an odd
    11·2 answers
  • Find the gain or loss <br><br>C.P. = rupees 1250, S.P= rupees 1000​
    9·2 answers
  • Define Apothem:-<br> _____________<br><br><br> Thanks!
    15·2 answers
  • $12 per 45 minutes is how much per hour? (I will give brainliest to the first person that answers)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!