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
LuckyWell [14K]
3 years ago
9

Use substitution to solve the system. 3x+5y = 2 y = 2x-10

Mathematics
2 answers:
SOVA2 [1]3 years ago
7 0

Answer:

x = 4

y = -2

Step-by-step explanation:

3x + 5y = 2

y = 2x - 10

3x + 5(2x - 10) = 2

3x + 10x - 50 = 2

13x = 52

x = 4

Now,

y = 2(4) - 10

y = 8 - 10

y =  - 2

natima [27]3 years ago
5 0

Answer:

x = 4, y = -2

Step-by-step explanation:

You might be interested in
Solve using substitution x+y+2z=-7 / -5z=25 / 3x-3y-6z=3
inn [45]

Answer:

x = -3

y = 6

z = -5

Step-by-step explanation:

A) x + y + 2z = -7

B) -5z = 25

C) 3x - 3y - 6z = 3

B) -5z = 25

z = 25/-5

(z = -5)

A) x + y + 2(-5) = -7

x + y = -7 + 10

x + y = 3

(x = 3 - y)

C) 3x - 3y + 6(-5) = 3

3x - 3y + 30 = 3

3x - 3y = -30-3

3x - 3y = - 27

C) 3 (3-y) - 3y + 30 = 3

9 - 3y - 3y+ 30 = 3

-6y + 39 = 3

-6y = -39 + 3

y = -36/-6

(y = 6)

x + 6 = 3

x = 3 -6

(x = -3)

8 0
3 years ago
Shana makes a 3 gallon batch of lemonade. Each 1 gallon batch requires 2.5 pints of fresh lemon juice. How many cups of lemon ju
GuDViN [60]
For a 3 gallon batch she will need 7.5 pints of lemonade

For 3 batches of the 3 gallon batch she will need 22.5 pints of lemonade

Sorry I didn’t know which one you wanted
6 0
2 years ago
Slove the equation<br>6=4(×+2)​
iogann1982 [59]

Answer:

6 = 4x + 2

4x = 8

X = 2

is your answer

7 0
3 years ago
Read 2 more answers
Find the distance between points (2,5) and (-2,2)
mrs_skeptik [129]

Answer:

5

Step-by-step explanation:

Let :

x(1) be 2

y(1) be 5

x(2) be -2

y(2) be 2

We know that distance between any 2 points is equal to:-

\sqrt{{(x(2)  - x(1) )}^{2} +  ({y(2) - y(1))}^{2} }

So using the above formula ,

\sqrt{ {( - 2 - 2)}^{2} +  {(2 - 5)}^{2}  }

=  > \sqrt{ {( - 4)}^{2} +  {( - 3)}^{2}  }

=  > \sqrt{16 + 9}

=  >  \sqrt{25}  = 5

8 0
3 years ago
Ishmael made a mistake in his checkbook. He wrote a check for $89.80 for his Verizon bill but mistakenly recorded it in his chec
Verdich [7]

Answer:

A) A check for $89.80 for Verizon bill = -89.8

A deposit of $89.80 = +89.8

B) The difference between the two is that,

For the check, money is taken or removed from the account to pay for a bill while

For the deposit, money is added to the account.

Step-by-step explanation:

Ishmael made a mistake in his checkbook. He wrote a check for $89.80 for his Verizon bill but mistakenly recorded it in his checkbook as an $89.80 deposit.

A) Represent each transaction with a rational number

A check for $89.80 for Verizon bill = -89.8

A deposit of $89.80 = +89.8

B) Explain the difference between the transactions.

For the first transaction which is a check for his Verizon bill, using a check on your account means Ishmael wants to withdraw money from his account to pay for the bill. The money in his account will be $89.8 lesser than the initial amount there.

For the second transaction which recording in his checkbook a deposit of $89.80 means $89.80 was added to an account.

8 0
3 years ago
Other questions:
  • Which expression is equivalent to -3(2m-1)-n
    12·2 answers
  • A plot of land is represented on a map whose scale is 1:10000.On the map perimeter of the plot is 24.8cm.Calculate,in km ,the ac
    8·1 answer
  • HELP!!
    12·2 answers
  • What is -2+-(99,009)
    7·2 answers
  • Read the instructions on top and answer 7,8,9, and 10. You will get 10 points. If you do not answer it properly you will be repo
    9·1 answer
  • Suppose an n×n matrix A has determinant equal to 1. Which of the following statements is true? Check the correct answer(s) below
    6·1 answer
  • Heat is escaping at a constant rate, (dQ/dt is constant) through the walls of a long cylindrical pipe. Find the temperatureT at
    14·1 answer
  • What is the domain of the graphed function?
    7·1 answer
  • a quantity of y varies partly as x and partly as the square of x. when x=2 ,y=14 and when x=5, y=65. Find y when x=-2​
    13·1 answer
  • Find the value of x.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!