florindaperes1 florindaperes1

24-05-2016
Mathematics

contestada

-x - 7y = 18
4x + 7y = -30
How can you order a ladder?

Respuesta :

apologiabiology apologiabiology

24-05-2016

I can solve
add them equations

-x-7y=18
4x+7y=-30 +
3x+0y=-12

3x=-12
divide 3
x=-4
sub
-x-7y=18
-(-4)-7y=18
4-7y=18
minus 4
-7y=14
dividd e-7
y=-2

x=-4
y=-2
(-4,-2)

Answer Link

Otras preguntas

please i need this by today

In prokaryotes, DNA replication starts in one place, and in _________ DNA replication starts in many places. Question 7 options: metazoa eukaryotes protozoa

Place a check mark next to each item which gives an example of the figure of speech known as a simile. Leave all other items unchecked. From the air at night, t

n a classroom, which comparison would a teacher most likely use for describing a mole? a cup of water and a liter of oil a dozen eggs and a dozen jellybeans a j

The base of a triangle is represented by (2x − 6) and the height by (x − 2). Which polynomial expression BEST represents the area of the triangle? A) x2 + 5x +

How was phoenicia organized?it was ruled by an all-powerful king.it was an alliance of countries.it was a large city-state.it was a collection of city-states.

150% of what number is 34

Evaluate the function.

Help me please PRECALCULUS correct answers only please

what is the difference between the points (4,4) and (8,7)