3 years ago

Solve -5 = x - 3y Solve 11 = -3x + 7y

Mathematics

1 answer:

Talja [164]3 years ago

4 0

Answer:

x=1, y=2. (1, 2).

Step-by-step explanation:

x-3y=-5

-3x+7y=11

----------------

x=3y+(-5)

x=3y-5

-3(3y-5)+7y=11

-9y+15+7y=11

-2y=11-15

-2y=-4

2y=4

y=4/2

y=2

x-3(2)=-5

x-6=-5

x=-5+6

x=1

You might be interested in

Why must the vertex of an isosceles triangle be an even number

WINSTONCH [101]

Answer:

Step-by-step explanation:

The vertex of an isosceles triangle must be an even number because its identical base angles are congruent. Therefore if the angle at the vertex is x, then the vertex of an isosceles triangle must be an even number because its identical base angles are congruent. Therefore if the angle at the vertex is x, then the .

4 0

2 years ago

Is the following statement always, sometimes, or never true? “The supplement of an acute angle is an obtuse angle.” Explain your

balu736 [363]

Answer:

Always

Step-by-step explanation:

An acute angle is an angle that is less than 90. Supplementary angles add up to 180.

So 180-89= 91

An obtuse angle is any angle that is greater than 90.

Here's a link to a better explanation.

brainly.com/question/14180317

7 0

3 years ago

Read 2 more answers

Can someone please help me with my homework

sladkih [1.3K]

Where

$raduis \: = \: \frac{diameter}{2} \\ diameter \: = \: raduis \: \times \: 2 \\ circumference \: = \: 2\pi \times radius \\ area \: = \: \pi \times {radius}^{2}$

5 0

3 years ago

Mr. Lemus washed

Georgia [21]

Answer:

his son

Step-by-step explanation:

5 0

3 years ago

The equation for Y=x+5 and y=-2x-1

Olenka [21]

It’s y=3 i’m pretty sure

8 0

3 years ago