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
marissa [1.9K]
2 years ago
13

Whats the solution of y = x +2 2x - 5y = 2

Mathematics
1 answer:
aleksandr82 [10.1K]2 years ago
7 0

Answer:

x = -4, y = -2

Step-by-step explanation:

substitute for y

2x - 5(x + 2) = 2

distribute -5

2x -5x - 10 = 2

solve

-3x - 10 = 2

add 10 on both sides

-3x = 12

divide by -3

x = -4

now substitute for x in the equation y = x + 2

y = -4 + 2

y = -2

You might be interested in
a game cost $30 and a stoe bought it and sold it for $50. what is the percent makeup???????????????? need help ASAP!
PIT_PIT [208]

Answer:

67%

Step-by-step explanation:

Cost plus markup = selling price.

Here, the cost was $30 and the selling price was $50.  Subtracting $30 from $50, we get $20, which was the dollar amount of the markup.

We now compare this $20 to the original cost ($30):

$20

------- * 100^ = 67%

$30

The markup, as a percentage, was 67%.

5 0
3 years ago
Aubrey's dinner cost $85. She tips the waitstaff 30%, for excellent service.
Olin [163]
30% is equal to 0.3 (found by dividing the percentage by 100). Then we multiply the cost of dinner, $85, by 0.3 to find an answer of $25.50.

Answer: $25.50
6 0
2 years ago
Which system has no solution? A b c d
iren2701 [21]
System B has no solution.
8 0
3 years ago
I really need help on this one, guys
Gennadij [26K]

Answer:

6.2 meters

Step-by-step explanation:

Use pythagorean theorem to find b:

b = √(2.8² - 2.7²) = √0.55 = 0.7 (nearest tenth)

Perimeter of triangle = sum of all its sides = 2.8 + 2.7 + 0.7

Perimeter = 6.2 meters

6 0
3 years ago
A chemical company makes up batches of copper sulfate solution by adding 250 kg of copper sulfate powder to 1000 liters of water
shepuryov [24]

Answer:

  • 0.07 kg

Step-by-step explanation:

  • <em>Assuming copper sulfate has same density as water</em>

<u>Chemical to water ratio as per given is:</u>

  • 250 kg : 1000 liter = 1 kg : 4 liter

Lab solution is 350 ml

<u>Converting to same ratio as above:</u>

350/(1 + 4) = 70 ml

  • 70 ml : 280 ml = 70 g : 180 ml = 0.07 kg : 180 ml

Answer is 0.07 kg

4 0
2 years ago
Other questions:
  • Solve x2+10x+21=0 ...?
    14·1 answer
  • One angle of an isosceles trapezoid has measure 57. What are the measures of the other angles?
    9·2 answers
  • FIND THE RADIUS OF A CIRCLE WHO'S DIAMETER IS40 FEET
    7·2 answers
  • What is x at most 30
    13·1 answer
  • How do I find the hypotenuse of a triangle when given 90 degrees and one side length?
    15·1 answer
  • At Feet-R-Us colored socks are $5 and white socks are $3. Jimmy buys $32 worth of socks. An equation representing this scenario
    15·1 answer
  • I need some help with this​
    13·1 answer
  • What is the sum of the rational expression below? 3x/x+2 + x/x+4
    15·2 answers
  • What is the area of an equilateral triangle with the base of 8 cm? Round your answer to the hundredths place. ​
    10·2 answers
  • Y is 5 less than the square of the sum of p and q.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!