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
tatyana61 [14]
3 years ago
9

-3x+2y=-39 and 5x+4y=21 Algebra elimination

Mathematics
2 answers:
Marrrta [24]3 years ago
8 0
X = 9 Y = -6

Hope this helps!!✌
rodikova [14]3 years ago
7 0
Multiply the first equation by 2
-6x + 4y = -78
5x + 4y = 21
Subtract those two equations
-11x = -99
X = 9
Plug in 9 for x in one of the equation
-3(9) + 2y = -39
-27 + 2y = -39
2y = -12
Y = -6
In conclusion, x = 9, y = -6
You might be interested in
The solutions to the equation -4|x + 9| = -8 are:<br> 7, 11<br> 7, -11<br> -7, 11<br> -7, -11
dimaraw [331]

Answer:

option 4

Step-by-step explanation:

<u>Given</u><u> </u><u>Equation</u><u> </u><u>:</u><u>-</u><u> </u>

=> -4| x + 9 | = -8

<u>To </u><u>FinD</u><u> </u><u>:</u><u>-</u><u> </u>

=> Solution of the equation .

<u>Solving </u><u>it </u><u>:</u><u>-</u><u> </u>

=> -4| x + 9 | = -8

=> | x + 9 | = -8/-4

=> |x + 9| = 2

=> ( | x + 9 | )² = 2²

=> x + 9 = ±2

=> x = -9 +2 , -9-2

=> x = - 7 , -11

Option 4 is correct.

5 0
3 years ago
Read 2 more answers
If f(x) =3x^2 and g(x) =4x^3 +1 what is the degree of fg (x)
Julli [10]
F°g(x) = f(g(x)) = 3(g(x))² = 3(4x³ + 1)².
Now, when you expand the bracket, you will find that the highest degree or degree of the polynomial is 6. 
∴<span>degree of fg (x) = 6</span>
4 0
4 years ago
Number five please show your work
Goryan [66]

Answer:

4 vases will have 4 flowers

The drawing will help

5 0
4 years ago
Read 2 more answers
Find a factor of 5, 15 and 25​
kompoz [17]

a common factor of 5, 15 and 25 is 1 and 5

3 0
3 years ago
Billy started with 2 poems in his journal. Then he started writing 4 poems each day. Which of the following graph represents Bil
Mama L [17]
The equation would be y = 4x + 2 so just look with a graph that has a y-intercept of two, as well as moves up four and up 1 each time.

x / y
0 / 2
1 / 6
2/ 10
3 / 14
4 / 18
5 / 22
6 / 26
7 / 30
8 0
3 years ago
Read 2 more answers
Other questions:
  • Help asap got to hurry to do my homework cause I have to go some where
    6·2 answers
  • Can you help me with these questions<br>​
    15·1 answer
  • Find the coordinates of the focus and equation of the directrix for the parabola given by y2 = −4x. The general formula for this
    14·1 answer
  • What is the probability that a couple will have a girl a boy a girl and a boy in this specific order?
    14·1 answer
  • For any real number r, which of the following must be greater than r?
    13·1 answer
  • I will mark u brainliest and give u 50 points, but pls help me :(<br><br>​
    13·2 answers
  • Hello ladies and gentlemen its currently 8pm for me and I’m coming to you with you terrific Tuesday explanation for elegant expr
    15·1 answer
  • Jaq ueline has 15 cookies to share with her study group. If there are 4 kids in the group and they want to split the cookies eve
    11·1 answer
  • Show problem set up for full credit.
    8·1 answer
  • WILLL GIVE POINTSSSS
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!