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
Oliga [24]
3 years ago
5

Could someone help me do this using substitution I don't know how to do this for math

Mathematics
2 answers:
umka21 [38]3 years ago
5 0
X=y-7 and x=2-8y  if there is a solution x=x so

y-7=2-8y  add 7 to both sides

y=9-8y   add 8y to both sides

9y=9  divide both sides by 9

y=1, and since x=y-7

x=1-7=-6

So the solution is the point (-6, 1)
gizmo_the_mogwai [7]3 years ago
5 0
If X=y-7 you put that into the other problem: y-7=2-8y. Then you combine like terms: 9y=9. Get the unknown by itself: divide both sides by 9: y=1. Then you put what y= into the first problem: X=1-7 then X=-6.
So X=-6, Y=1. :) hope this helps!
You might be interested in
Rewrite the equation in vertex form. Name the vertex and y-intercept. y=3/5x^2+30x+382
Serga [27]
<span>(y-7) = 3/5 (x+25)^2 so the y intercept is -7 and the vertex is 35

</span>
7 0
3 years ago
Read 2 more answers
A survey results of a middle school shows that 3/20 of the students played football. what percentage of the students play footba
joja [24]

Answer: 15%

Step-by-step explanation:

From the question, we are informed that a survey results of a middle school shows that 3/20 of the students played football.

The percentage of the students that play football in this schools would be calculated as multiplying the fraction by 100. This will be:

= 3/20 × 100

= 3 × 5

= 15%

8 0
3 years ago
ANSWER ASAP<br> THANKS<br> ...............
mylen [45]

Answer:

250

Step-by-step explanation:

5*5=25

25*10=250

+$++$$+$

6 0
3 years ago
The equation for picture D is 13 4/5 = w + 3 4/5. What is the solution? Write the number answer only. Please do not write the va
aksik [14]

Answer:

13 4/5 = 10 + 3 4/5

Step-by-step explanation:

4 0
2 years ago
How man different rectangular prisms can be built from 18 cubes
Sever21 [200]
You can make 4 out of 18 cubes
3 0
3 years ago
Read 2 more answers
Other questions:
  • Ms Hernandez has $100 to spend on parking at admission to the zoo the parking will cost seven dollars and the admission tickets
    15·1 answer
  • What amount should Andy write for the balance on January 30?
    12·1 answer
  • WILL GIVE BRAINLIEST AND FOLLOW!! Last Question... A,B,C, or D
    13·1 answer
  • A committee in Congress is made up of 19 members, and there are 9 more Democrats than Republicans on it. How many Democrats are
    14·2 answers
  • Can 3 be equivalent to 300
    10·1 answer
  • The fact family model represents 6 + 5 = 11.
    10·1 answer
  • Which of the following statements are true? Check all that apply.
    14·1 answer
  • PlEaSe HeLp Me !!!!!!!!!!!!!!!!!!!!!!!!!!!!
    13·2 answers
  • WILL REWARD BRAINIEST! A right rectangular container is 6 cm wide and 10 cm long and contains water to a depth of 7cm. A stone i
    12·2 answers
  • Cos/1+Sin = 1-Sin/Cos
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!