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
Leviafan [203]
3 years ago
12

Find the value of 2x-yi fx+y=8and4x-y=22​

Mathematics
1 answer:
Alexeev081 [22]3 years ago
5 0

Answer:

10

Step-by-step explanation:

Given

x+y=8\\ \\4x-y=22

Add these two equations:

x+y+4x-y=8+22\\ \\5x=30\\ \\x=6

Substitute it into the first equation:

6+y=8\\ \\y=8-6\\ \\y=2

Then

2x-y=2\cdot 6-2=12-2=10

You might be interested in
Grant earns $5 for each magazine he sells.Write an equation in two variables showing the relationship between the number pf maga
slega [8]

Answer:

A=5m

Grant will make $60 from selling 12 magazines.

Step-by-step explanation:

Let m represent number of magazine sold and A represent amount of money earned.

We have been given that Grant earns $5 for each magazine he sells. So amount earned from m magazines would be 5 times m that is 5m dollars.

Now, we will equate total amount earned by Grant with A as:

A=5m

Therefore, our required equation would be A=5m.

To find the amount earned by Grant by selling 12 magazines, we will substitute m=12 in our equation as:

A=5(12)

A=60

Therefore, Grant will make $60 from selling 12 magazines.

3 0
3 years ago
I need help asap pleaseee,
Zinaida [17]

Answer:

The slope of line A is C. 2

Step-by-step explanation:

You can check the slope by dividing the rise (how many units up) and the run (how many units across). This line has a rise of rise of 4 and a run of 2. Diving 4 by 2 gives you a slope of 2.

6 0
2 years ago
Jacob is mixing salt with
77julia77 [94]

The number of tablespoons of salt jacob mixes with 1 cup of water is 4 tablespoon of salt.

<h3>How to interpret the division? </h3>

When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get.

Thus, if 10 mangoes are there, and 2 people, then 10 ÷ 2 is the number of mangoes each person would get, which is 5.

Division, thus, can be interpreted as equally dividing the number that is being divided in total x parts, where x is the number of parts the given number is divided.

Thus, a \div b = a divided in b equal parts.

Also, we can write: a \div b = a \times \dfrac{1}{b}

(it is since a = a times 1 so a/b = 1 \times (a/b) = (1/b) \times a)

The given table is:

Tablespoons of salt          Cups of water

             8                                    2

             16                                   4

             24                                   6

2 cups of water gets 8 tablespoon of salt.

Then 1 cup of water gets 8/2 = 4 tablespoons of salt. (divided the numbre of cups of water and number of tablespoons of salts in 2 equal parts).

This pattern remains same for other rows of the table, since we have:

1 cup of water gets 8/2 = 16/4 = 24/6 = 4 tablespoons of salt.

Thus, the number of tablespoons of salt jacob mixes with 1 cup of water is 4 tablespoon of salt.

Learn more about division here:

brainly.com/question/26411682

#SPJ1

4 0
2 years ago
6 × 2 − 4 × 5 + 12 ÷ 4 insert parentheses
Varvara68 [4.7K]

Answer: (6 x 2) - (4 x 5) + (12 / 4)

6 0
3 years ago
Read 2 more answers
You bought a 5 pound turkey for $14.45. What is the cost for one pound?
sweet-ann [11.9K]

Answer:

$2.89

Step-by-step explanation:

$14.45/ 5= 2.89

3 0
3 years ago
Other questions:
  • What is the area with circumference 36pi cm
    11·1 answer
  • A cell divides through mitosis, creating two daughter cells. Which of the following is true about the daughter cells?
    7·1 answer
  • Convert 65 mm to meters
    13·1 answer
  • Colton has n nickels and d dimes. He has no more than $2 worth of coins altogether. Write this situation as an inequality.
    8·1 answer
  • A​ singer-songwriter wishes to compose a melody. each note in the melody must be one of the 1010 notes in her vocal range. how m
    10·1 answer
  • A friend lends you $250 for a week, which you agree to repay with 5% interest. How much will you have to repay?
    10·1 answer
  • Two solutions of salt water contain 0.06% and 0.26% salt respectively. A lab technician wants to make 1 liter of solution which
    6·1 answer
  • A function has the rule y = -2x + 11. Which of the following ordered pairs represents an input of 4 and its output?
    14·1 answer
  • Which point on the number line represents -1 1/3?​
    6·1 answer
  • What is the result of (5/8)⁴
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!