All categories

3 years ago

Solve by elimination

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Answer:(4,1)

Step-by-step explanation:

-x+3y=-1

X-2y= 2

______

Change second equation move all to right side to leave x on left side .

-x+3y= -1

X= 2y+2

Now substitute second equation that you made into first equation to find y.

-(2y+2)+3y= -1

-2y-2+3y=-1

Y-2=-1

Y= -1+2

Y= 1

Now substitute your answer of y into second equation you created to find x .

X= 2y+2

X= 2(1)+2

X=2+2

X=4

You might be interested in

What is the product

Vesnalui [34]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Each point on the edge of a circle is equidistant from the center of the circle. The center of a circle is located at (6,3). Whi

PolarNik [594]

Answer:

(0, -5)

Explanation:

The answer is (0, -5) on Edge 2020

have a great rest of your day!! $^u^$

4 0

3 years ago

Read 2 more answers

Ken ordered the following numbers greatest to least?

Elan Coil [88]

Answer:

what are the numbers?

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What was the simple interest rate on a $8,000 investment that was left in an account for 18 months and earned $360 in interest

diamong [38]

Answer:

0.375%

Step-by-step explanation:

i=P*R*T

$360=$8000*R/100*18/12

$360=$960R

$360/$960=$960/960

0.375%=R

7 0

3 years ago

Read 2 more answers

Solve the inequality and express your answer in interval notation<br> x^2+8x+5 <0

irakobra [83]

The interval notation is $(-\sqrt{11}-4, \sqrt{11}-4)$

Explanation:

The inequality is $x^{2}+8 x+5$

Let us complete the square, we get,

$x^{2}+8 x+5+4^{2}-4^{2}$

Simplifying, we have,

$(x+4)^{2}+5-4^{2}$

$(x+4)^{2}-11$

Adding both sides of the equation by 11, we get,

$(x+4)^{2}$

Since, we know that for $u^{n}$ , if n is even then $-\sqrt[n]{a}$

Thus, writing the above expression in this form, we get,

$-\sqrt{11}$

Also, if $a$ then $a$ and $u$

Then ,we have,

$-\sqrt{11}$ and $x+4$

Solving the inequalities, we get,

$-\sqrt{11}\ \ \ \ \ \$ and $x+4$

Merging the intervals, we have,

$-\sqrt{11}-4$

Hence, writing the solution in interval notation, we have,

$(-\sqrt{11}-4, \sqrt{11}-4)$

Therefore, the answer is $(-\sqrt{11}-4, \sqrt{11}-4)$

7 0

4 years ago