3 years ago

Solve each system of linear equations by elimination. X-6y=7 -x+6y= -7 -

Mathematics

1 answer:

ehidna [41]3 years ago

5 0

Answer:

Infinitely many solutions.

Step-by-step explanation:

x-6y=7

-x+6y=-7

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

0=0

infinitely many solutions.

You might be interested in

At Melville High School 20% of the girls and 50% of the boys went to a basketball game. Since 40% of all the students were girls

Dafna11 [192]

Answer:

$38\%$

Step-by-step explanation:

$Let\ total\ number\ of\ students=x\\\\Number\ of\ Girls=40\%\ of\ x\\\\Number\ of\ girls=\frac{40}{100}\times x=0.4x\\\\Number\ of\ boys=x-0.4x=0.6x\\\\$

Students went to game:

$Girls\ went\ to\ game=20\%\ of\ 0.4x\\\\Girls\ went\ to\ game=\frac{20}{100}\times 0.4x=0.2\times 0.4x=0.08x\\\\Boys\ went\ to\ game=50\%\ of\ 0.6x\\\\Boys\ went\ to\ game=\frac{50}{100}\times 0.6x=0.3x\\\\Students\ went\ to\ game=Girls\ went\ to\ game+Boys\ went\ to\ game\\\\Students\ went\ to\ game=0.3x+0.08x=0.38x\\\\Percentage\ of\ students\ went\ to\ game=\frac{0.38x}{x}\times 100=38\%$

4 0

3 years ago

3. Find mZPST. 9 T (111 - 3)" (58-9) Р R

4vir4ik [10]

Answer:

Step-by-step explanation:

11x-3+5x-9=180

16x-12=180

16x=192

x=12

<pst=129

5 0

3 years ago

12 6x−9y>12 what inequalities is equivalent to the inequality

Svet_ta [14]

Answer:

use mathpapa.com for those type of questions it always helps

Step-by-step explanation:

6 0

3 years ago

Solve 3x-2[4x+1]=10x+3

vovangra [49]

Answer:

-1/3

Step-by-step explanation:

3x-2(4x+1)=10x+3

3x-8x-2=10x+3

-5x-2=10x+3

-5x-10x-2=3

-15x-2=3

-15x=3+2

-15x=5

x=5/-15

simplify

x=-1/3

6 0

4 years ago

Anna71 [15]

Answer:

-4 + (-9)

Step-by-step explanation:

It doesn't matter if you add the plus sign, -4 + (-9) is the same as -4-9

3 0

3 years ago

Solve each system of linear equations by elimination. X-6y=7 -x+6y= -7 -​

Solve each system of linear equations by elimination. X-6y=7 -x+6y= -7 -