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
almond37 [142]
3 years ago
5

Solve the system of linear equations x + y = 4 and 2x + 3y = 0

Mathematics
1 answer:
forsale [732]3 years ago
8 0

solve this answer by using substitution. set the first equation to x=-y+4 then substitute -y+4 for x in the second equation.

2(-y+4) + 3y=0

-2y+8 + 3y=0

y+8=0

y=-8

now use -8 and solve for x

x+(-8)=4

x=12

You might be interested in
Please help <br><br>y≥1/3x-3​
zloy xaker [14]

Answer:

B, the one with the line and shaded the top on the right side. (The one that goes to 7 on the x axis).

Step-by-step explanation:

First I find which graph as y -intercept of -3, which is all of them.

Next, I find with graph has a slope of 1/3. (rise 1 run 3). Only B and D has a slope of 1/3 (The ones that has a less steep graph. )

Then, I use the coordinate (0,0) to see which side the graph shades. I plug it into the inequality. (0)≥1/3(0)-3​. Solve. Is 0 greater than -3. YES! so we shade the part where (0,0) is shaded which is B.

6 0
3 years ago
Pls help with algebra!
Serjik [45]
Part A: This data does represent a function because no value of x is repeated.
Part B: If x = 6 for the relation f(x) = 7x - 15, then f(x) will equal 27. The function f(x) = 7x - 15 will have the greater value
Part C: If f(x) is equal to 6 then x will equal 3
4 0
2 years ago
How many 0.5cm x 0.5 cm x 0.5cm cubes are needed to completely fill the rectangular prism measuring 4 cm x 3 cm x 3cm?mp
Juliette [100K]

Answer:

288

Step-by-step explanation:

The volume of the cube is 0.5^3 = 0.125, and the volume of the rectangular prism is 4*3*3 = 36.

Now, you just divide 36 by 0.125, which is 288.

I hope this helped.

6 0
3 years ago
In an experiment on the behavior of young children, each placed in an area with five toys. The variable of interest X is the num
Fofino [41]

Answer:

a)15 b)2.34 c)by taking sum of number of toy divide to its numberings

Step-by-step explanation:

  • in roman a number of toys is equal to the sum of all toys and standard deviation is obtained from formula
4 0
2 years ago
Factor 48m - 80n.<br> 16mn(3m - 5n)<br> 16(5n - 3m)<br> 16(3m - 5n)
aliya0001 [1]
The correct answer for this would be the last option. The factors of 48m - 80n are 16(3m - 5n). If you try to solve this, the result would be 48m - 80n. 16 x 3m would be 48m and 16 times 5n would be 80n. Hope this is the answer that you are looking for. 
4 0
3 years ago
Other questions:
  • Compute the permutation.
    13·1 answer
  • In Washington, D.C., Constitution Ave. meets Pennsylvania Ave. at a 25° angle. What is the measure of the complementary angle to
    14·1 answer
  • What is the equation of the line with an x-intercept of -1 and a y-intercept of 2? y = 2x - 2 y = - 2x 2 y = 2x 2
    7·1 answer
  • I need help finding out the answer
    11·2 answers
  • Use the simple interest formula to find the ending balance.
    12·2 answers
  • 15 pts plz help
    5·1 answer
  • Help pls show brainly
    7·2 answers
  • 9(a+2)=9 <br> con comprobación plisss!!
    9·1 answer
  • What is the third term of the sequence defined by f(n)=2n-1
    5·1 answer
  • 2 [ 2 + 2 ( 8 ⋅ 6 − 17 ) ]
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!