3+(-5)x=19
Subtract 3 from both sides of the equation.
-5x= 16
Divide by -5 on both sides
X= -3.2
Answer:
x=9
Step-by-step explanation:
Using elimination method.
Add equation 1 to equation 2
x + y = 11
x - y = 7
---------------
2x + 0 = 18
Divide both sides by 2
2x = 18
---- ----
2 2
x = 9
Answer:
Step-by-step explanation:
Given
Required
The distance between them
This is calculated as:
So, we have:
Answer: 5 weeks
Step-by-step explanation:
100 divided by 20 equals 5
The equation is:
y
=
5
4
x
−
13
Explanation:
The slope-intercept form of a straight line is
y
=
m
x
+
c
In this case we have a point,
(
x
,
y
)
and the slope,
m
so all we need is a value for
c
.
Substitute into
y
=
m
x
+
c
−
3
=
5
4
(
8
)
+
c
−
3
=
10
+
c
c
=
−
13
