By substitution is how to solve
2x-3y=21
y=3-x
2x-3(3-x)=21
2x-9+3x=21
5x=30
x= 6
now substitute our x value into y=3-x
so we get
y=3-6 = -3
so x=6 and y=-3 hope this helps!!!!! Thank you!
Answer:
0.1
Step-by-step explanation:
-5|10x+9|+3=8
note: absolute value means positive
-5+10x+9+3=8
collect like terms
9+3-8-5=-10x
12-13=-10x
-1=-10x
x=-1/-10
x=1/10
x=0.1
Hope i helped
pls mark brainliest
Answer:
the anwser is b
Step-by-step explanation:
divide 27 by 180 and you get an answer of 54
Answer:
A True
Step-by-step explanation:
tell me if I'm worng
Answer:
y = - x + 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange - 4x + 4y = 4 into this form by adding 4x to both sides
4y = 4x + 4 ( divide all terms by 4 )
y = x + 1 ← in slope- intercept form
with slope m = 1
given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= - 1, thus
y = - x + c ← is the partial equation
To find c substitute (- 4, 5) into the partial equation
5 = 4 + c ⇒ c = 5 - 4 = 1
y = - x + 1 ← equation of perpendicular line