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
Airida [17]
1 year ago
11

Could someone please help me with this thank you very much

Mathematics
1 answer:
elena-s [515]1 year ago
8 0

Answer:

Answer for #10:

y = 2 \: and \: x = 1

Answer for #1:

x = 2 \: and \: y =  - 1

Step-by-step explanation:

In order to solve a simultaneous equation using the substitution method you have to:

Use one of the equation and substitute it into the other equation, in this case equation <em>B</em><em> </em>was substituted into equation <em>A</em><em>.</em>

<em>equ. \: a = (2x - 3y = 7) \\ equ. \: b = (x = 1 - y)</em>

Therefore since x = 1 - y, equation A would be:

2(1 - y) - 3y = 7 \\ (2 - 2y) - 3y = 7 \\  - 2y - 3y = 7 - 2 \\  - 5y = 5 \\ y =  - 1 \: and \: x = 2

You might be interested in
What is the probability that the selected person does not have a master's degree?
Misha Larkins [42]
I think that it is about 20 out of 100.
3 0
3 years ago
3× - 4y =65 when u =4
sergey [27]
If Y=4 then X=27
hope this helps

8 0
3 years ago
Read 2 more answers
The total amount of money (in cents) in x quarters, (x+5)dimes, and 2x nickels
coldgirl [10]
Bsbsbbs a. Ababbabababbsbs
8 0
3 years ago
The equation d=rt is used to calculate distance, rate, or time, where dd is the distance (in meters), r is the rate (in meters p
MAVERICK [17]
We know derrick walks 145 m/min to get the other we simply divide how far they went in how much time
Tomas: 1200/8= 150 m/min
Becky: 1400/10= 140m/min
therefore Tomas is the fastest walker so we will write the equation based on his speed
y = 150x
you should start at the origin (0,0) and got up 150 meters for and over 1 for every minute they run!
8 0
3 years ago
Read 2 more answers
Use the function f(x)=2^x/x to answer the question. Which combination could result in the function f(x)?
KonstantinChe [14]

Answer:

A function is shown where b is a real number. f(x)=x^2+bx+144 The minimum value of the function is 80. Create an equation for an equivalent function in the form f(x)=(x-h)^2+k.

8 0
3 years ago
Other questions:
  • Jen's has current assets of $2,200, cash of $400, and inventory of $1,300. The firm has accounts payable of $300, long-term debt
    6·1 answer
  • What is 1/8 divided by 5
    14·2 answers
  • A rectangular box has a perimeter of 36 inches. Which of the following equations represents the area of the rectangular box in t
    8·1 answer
  • A dance instructor chose four of his 10 students to be on stage for a performance. If order does not matter, in how many differe
    6·1 answer
  • URGENT PLEASE HELP ME
    13·1 answer
  • 2y^2/y-7 - y^2+49/y-7
    14·1 answer
  • Find the length of the arc in red shown below
    9·1 answer
  • Simplify.<br><br> 15 – (–3) – 4<br><br> –16<br><br> –8<br><br> 14<br><br> 22
    11·1 answer
  • Find the value of x and y please help..
    11·1 answer
  • Can someone please help me with this
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!