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
Molodets [167]
3 years ago
12

What is the solution of the system ? Use substitution y=2x+7 y=x-1

Mathematics
1 answer:
astraxan [27]3 years ago
5 0
(-8,-9)

Explanation:

y=2x+7 ; y=x-1

x-1=2x+7

x-1-7=2x+7-7

x-8=2x

x-x-8=2x-x

x=-8

y=x-1

y=-8-1

y=-9
You might be interested in
THIS IS A MATH QUESTION ON DIFFERENT TYPES OF TRIANGLES TY :)
weqwewe [10]

1. This triangle is scalene.

2. This triangle is isosceles. Two angles are equal.

3. This triangle is equilateral, all sides are equal.

4. This triangle is equilateral, all angles are equal.

8 0
3 years ago
Read 2 more answers
What are the coordinators of the vertex of the graph of the function -2(x-1)^2 = y+5
mamaluj [8]
The answer is, (1, -5)... 
7 0
3 years ago
What value of x is in the solution set of –2(3x + 2) &gt; –8x + 6?<br><br> –6<br> –5<br> 5<br> 6
Assoli18 [71]

Answer: X=6

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Harold wrote this equation to model the level of water in a pool over time. The variable x represents time in hours. f(x) = 3,50
lina2011 [118]

Answer:

The water level is falling.

The initial level of water in the pool was 3,500 units

The water was 2,600 units high after 4 hours.

Step-by-step explanation:

The given function that models the water level is

f(x)=3,500-225x

where x represents time in hours.

The function represents a straight line that has slope m=-225

Since the slope is negative, it means the water level is falling.

The initial level of water in the pool can found when we put x=0 into the function.

f(0)=3,500-225(0)


f(0)=3,500, hence the initial level is 3,500.


To determine the level of water in the pool after 14 hours, we put x=14 into the equation to get;

f(14)=3,500-225(14)

f(14)=3,500-3150


f(14)=350


To determine the water level after 4 hours we put x=4

f(4)=3,500-225(4)

f(4)=3,500-900

f(14)=2,600


4 0
3 years ago
Read 2 more answers
6. A certain $400 investment is increasing 10%
Mars2501 [29]

Answer:

0.10

Step-by-step explanation:

0.10 = 10/100 or 10%

Multiply 400*0.10 to get 10% of 400.

6 0
2 years ago
Other questions:
  • Can you help or tell answer for numbers 1 2 3 4
    15·1 answer
  • What is 52,700,000 in scientific notation
    7·1 answer
  • Compare these with &lt;,&gt;,= 2 over 8 25%
    5·1 answer
  •  Can someone pleaseeee help if you’re correct I’ll give u brainlist
    14·1 answer
  • If f(x) = 2x+6 find the value of h if f(h) =4
    7·1 answer
  • Convert to the given unit. 65 m = cm​
    12·1 answer
  • Write the equation of the line Perpendicular to g (x) = 3x – 0.77, going through the point (0,-5). Show all work.​
    8·1 answer
  • How do you work 5e=3e+36​
    5·1 answer
  • Please help me with this!!!
    12·2 answers
  • A ship is stationary at sea.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!