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
sineoko [7]
2 years ago
7

L 5.2.3 Quiz: Two-Variable Systems: Substitution

Mathematics
1 answer:
Misha Larkins [42]2 years ago
6 0

Answer:

We get x=3 and y=21

The ordered pair will be: (3,21)

Step-by-step explanation:

We need to use the substitution method to solve the system of equations.

y = 10x-9\\y = x + 18

For substitution method we substitute the value of x or y from one equation to other.

Let:

y = 10x-9--eq(1)\\y = x + 18--eq(2)

Putting value of y from equation 2 into equation 1

y=10x-9\\Put\:y=x+18\\x+18=10x-9\\x-10x=-9-18\\-9x=-27\\x=\frac{-27}{-9}\\x=3

So, we get value of x=3

Now, for finding value of y, We substitute the value of x

Find value of x from equation 2

y=x+18\\x=y-18

Now, putting value of x in equation 1

y=10x-9\\Put\:x=y-18\\y=10(y-18)-9\\y=10y-180-9\\y-10y=-189\\-9y=-189\\y=\frac{-189}{-9}\\y=21

So, we get value of y=21

So, We get x=3 and y=21

The ordered pair will be: (3,21)

You might be interested in
I need help finding the lond divison for 8÷136
nignag [31]
Let me know if you don’t understand anything. Hope this helped.

7 0
3 years ago
Since the ratios for sides of triangles are the same, when the angles are the same, ? have been developed which show these ratio
Scilla [17]
Presuming that I am reading the question correctly, the answer is D. A trigonometric table would provide all of the ratios of the sides in relationship to the angles. Sin, cos, and tan are just one example of the ratio.
4 0
3 years ago
Read 2 more answers
My mother used 3/5 of a box of 35 eggs estimate how much sh used
Elina [12.6K]
35 eggs* (3/5)= 21 eggs

She used 21 eggs~
3 0
3 years ago
Read 2 more answers
In one month a store had 1,222 in sales but expenses were 2,345 how much money did the store lose in that month
dangina [55]
We simply need to subtract 1,222 from 2,345. Once we do that we get 1,223. Hope that helps! :)
6 0
3 years ago
if 5 kids are reading books in the library and they're are 12 kids and the other kids want to read to but it takes 33 minutes to
mixas84 [53]

Answer:

the answer is 6

Step-by-step explanation:

because 33 minutes to 5pm is 76 min so you divide 76 by 12 so its 6

4 0
3 years ago
Other questions:
  • Answer for number 23 please
    9·2 answers
  • Is 5.5 greater then 5.7
    7·2 answers
  • Why can’t -3/4 be a integer
    6·1 answer
  • PLSSSSSSS HEEELLPPP ASAP. quation
    9·1 answer
  • The fish eat about 12 ounces of food in 30 days. How many days would 50 ounces of food last
    12·1 answer
  • The managers of an airline analyzed a random sample of flights and found that 48 out of 50 were on time. The airline has 450 fli
    10·1 answer
  • Simplify completely x2 + 4x - 45/x2 +10x+9 and find the restrictions on the variable.
    13·1 answer
  • 1. Find the length of the hypotenuse in triangle ABC. Round your answer to the
    7·1 answer
  • Find the area of the blue shaded region.
    12·1 answer
  • Word Problems : Subtract 18 rupees 9 paise from 75 rupees 80 paise<br><br>Write In Step by Step ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!