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
sergij07 [2.7K]
3 years ago
5

3x - 3y = -32x - y = -5​

Mathematics
1 answer:
Korolek [52]3 years ago
4 0

For this case we must solve the following system of equations:

3x-3y = -3\\2x-y = -5

To solve we follow the steps below:

We multiply the second equation by -3:

-6x + 3y = 15

Thus, we have the equivalent system:

3x-3y = -3\\-6x + 3y = 15

We add the equations:

3x-6x-3y + 3y = -3 + 15\\-3x = -3 + 15\\-3x = 12\\x = \frac {12} {- 3}\\x = -4

We look for the value of the variable "y":

2 (-4) -y = -5\\-8-y = -5\\-y = -5 + 8\\-y = 3\\y = -3

Thus, the solution of the system is given by:

(x, y): (- 4, -3)

Answer:

(x, y): (- 4, -3)

You might be interested in
Hi could somebody help me
alexandr402 [8]

Assuming both vertical lines are parallel and assuming I'm supposed to find all the unmarked angles...

Angle C:

Supplementary Angles.

x+36=180

180-36=x

x=144

Angle B:

Corresponding Angles.

Angle B ≅ Angle C

144

Angle A:

360 degrees in a quadrilateral

36+144+81+x=360

261+x=360

x = 99

<em>Hope it helps <3</em>

5 0
3 years ago
Justin travels at 70 km/h on his motorcycle. If the speed limit is 50 mi./hr., is he speeding? Why or why not?
balu736 [363]

Answer:

Justin is <em>not </em>speeding because there is 1.609 km in a mile. So if you compare it to 70 km/h to 50 mi/h it would 70 km and 43.50 miles per hour. So like I said, no he is not because he is going below 50 mi/h.

6 0
3 years ago
Read 2 more answers
Mia has 12 boxes of cookies. Each box contains 36 cookies. she has another 258 cookies in the pantry. How many cookies does she
lana66690 [7]

690

12×36 + 258 = 690 For extending to 20 characters

8 0
2 years ago
Boston, Massachusetts had a population of 617,594 people during January 1 2010, and 675,647 people on January 1 2020.
tigry1 [53]

Answer:

  • See below

Step-by-step explanation:

<u>Exponential function is:</u>

  • y = abˣ

<u>If we consider the time difference in years as x and the initial population as a, then we get:</u>

  • 675647 = 617594*b¹⁰

<u>Find the value of b:</u>

  • b¹⁰ = 675647/617594
  • b¹⁰ = 1.09399864636
  • b = 1.09399864636^(1/10)
  • b = 1.009 (rounded)

<u>The equation we got is:</u>

  • y = 617594*1.009ˣ

Here we have y- population after x years since 2010, x - the number of years since 2010 and 1.009 is the population growth rate.

5 0
2 years ago
PLS HELP BIG EXAM PLS I WILL GIVE A LOT PLSS HELP
Sladkaya [172]

Answer: 11x1.5=16.5 if im correct

Step-by-step explanation:B)

3 0
2 years ago
Read 2 more answers
Other questions:
  • 1. Could the number 0000 appear in a table of random digits? How likely is this?
    7·2 answers
  • Write an equivalent expression for 7x + 4x + 3 -1
    10·2 answers
  • A polynomial function has a root of -3 with multiplicity 2, a root of 0 with multiplicity 1, a root og 1 woth multiplicity 1 and
    6·1 answer
  • 13. Complete the comparison: 26 &lt; ?<br>O A. 26<br>O B. 13<br>O C. 54<br>O D. 25​
    8·1 answer
  • 3 less than the quotient of 18 and a number m
    14·1 answer
  • Kai ate an ice cream cone at the park last Thursday. The height of the cone was 7
    12·1 answer
  • Solve the proportion 2x+1/6 = 7/9
    11·1 answer
  • Becca has $5 in her savings account and then deposited $10 each week. She now has
    10·1 answer
  • Round 468986 to the nearest thousand
    6·2 answers
  • Find the size of unknown angles<br>e) 100°+a°​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!