All categories

3 years ago

Find a solution to the following system of equations. -2x + y = -3 -x + 2y = 3

Mathematics

2 answers:

GalinKa [24]3 years ago

5 0

Answer:

Step-by-step explanation: 3+2=5

Serhud [2]3 years ago

3 0

Answer: x=3 y=3

Elimination method.

eliminating x and solving for y.

-2x +y=-3

-x+2y=3

-2(-x+2y=3)

2x -4y = 6

Multiply the second equation by -2 so the x’s cancel out.

-2x+y=-3

2x-4y=6

-2x and 2x cancels out

Add like terms

y-=-6

4y=-3

solve.

-3y = -9

divide by -3 on both sides and

y=3

Plug in 3 for the place of y in either either equation.

-2x+ 3= -3

solve for x.

-2x+ 3= -3

-3 -3

-2x=-6

Divide by -2

x=3

You might be interested in

30 POINTS I WILL GIVE U BRAINLIEST AND THANKS AND 5 STARS please help this is very important this is a big part of my grade

mars1129 [50]

Answer:

$1.\:2^x=64, x=\boxed{6},\\2.\:x=\left(\frac{2}{3}\right)^3,x=\boxed{\frac{8}{125}}\\3.\:3\cdot (3^4)=3^x, x=\boxed{5}\\4.\:\frac{16}{25}=x^2,x=\boxed{\frac{4}{5}},$

Step-by-step explanation:

$1.\\\\2^x=64,\\\log 2^x=\log64,\\x\log 2=\log 64,\\x=\frac{\log 64}{\log 2}=\boxed{6}$

$2.\\x=\left(\frac{2}{5}\right)^3=\frac{2^3}{5^3}=\boxed{\frac{8}{125}}$

3. This problem incorporates an exponent property.

Exponent property used: $a^b\cdot a^c=a^{(b+c)}$ , yielding an answer of $\boxed{5}$

$4.\\\\\frac{16}{25}=x^2,\\x=\sqrt{\frac{16}{25}}=\frac{\sqrt{16}}{\sqrt{25}}=\boxed{\frac{4}{5}}$

3 0

3 years ago

Read 2 more answers

Give an example of a recursive sequence. Please?

disa [49]

<span>f(x)=f(x−1)+2 this is one example =)</span>

7 0

3 years ago

Yesterday, the temperature et noon was 11.4" misright, the tempe tine had decreed by 15.7 degrees what was the

Ainat [17]

Answer:

-4.3 degrees

Step-by-step explanation:

if I understand the problem correctly, then the temperature at midnight fell 15.7 degrees from 11.4 degrees at noon.

11.4 - 15.7 = -4.3 degrees

so, the temperature at midnight was -4.3 degrees

3 0

3 years ago

A rectangular park has 2 paths of width 2m running across it. What is the total area covered by the 2 paths ?

astra-53 [7]

Answer:

10m.

Step-by-step explanation:

Add up all the areas of the running path and then you can reach to the answer. I got 10m and most probably it should be that only.

3 0

2 years ago

Are 3y+3 and 9(y+1/3) equivalent

vovangra [49]

Answer:

Step-by-step explanation:

3y+3 doesnt equal 9y+3

5 0

2 years ago

Read 2 more answers