3 years ago

Solve the system of equations 3x + y = 3 and 7x + 2y = 1.

Mathematics

2 answers:

photoshop1234 [79]3 years ago

5 0

Answer:

(-5, 18)

Step-by-step explanation:

7x + 2(3 − 3x) = 1 simplifies to

7x + 6 - 6x = 1, which, in turn, simplifies to:

x = -5

Using y = 3 - 3x (see Step 1), we find that y = 3 - 3(-5) = 3 + 15 = 18.

Thus, the solution is (-5, 18).

lord [1]3 years ago

5 0

Answer:

-5

Step-by-step explanation:

You might be interested in

What is the measure of YB

Ivenika [448]

Answer:

what do y and b stand for

Step-by-step explanation:

please elaborate

5 0

3 years ago

Plzzzzzz helppppp asappppp <br> ***will mark brainliest *****

Vanyuwa [196]

i am not sure but it think its 6 root 2

6 0

3 years ago

What is 9m-28=2m explain

loris [4]

9m-28=2m
9m-28-2m=2m-2m
(9m-2m)-28=0
7m-28=0
7m-28+28=0+28
7m=28
(7m)/7 = 28/7
m=4

5 0

3 years ago

Read 2 more answers

What is 1/5 of 1/2 of 1/4 of 152?

Alona [7]

1/5 of 152 is 30.4
1/2 of 152 is 76
1/4 of 152 is 38

hope this helped :)

4 0

4 years ago

Read 2 more answers

A population p of migrating butterflies changes over time it is represented by the equation p=100,000*4/5 where w is the number

Trava [24]

Given that,

A population p of migrating butterflies changes over time it is represented by the equation

$p=100,000\times (\dfrac{4}{5})^w$ Where w is number of weeks.

To find,

The population after 2 weeks.

Solution,

We have,

$p=100,000\times (\dfrac{4}{5})^w$

Put w = 2 in the above equation.

$p=100,000\times (\dfrac{4}{5})^2\\\\=100,000\times \dfrac{16}{25}\\\\=64000$

So, the population after 2 weeks is 64000 .

7 0

3 years ago