Answer:
b
Step-by-step explanation:
The equation:
3
x
2
−
5
x
−
12
=
0
is in the form:
a
x
2
+
b
x
+
c
=
0
with
a
=
3
,
b
=
−
5
,
c
=
−
12
The roots are given by the quadratic formula:
x
=
−
b
±
√
b
2
−
4
a
c
2
a
x
=
5
±
√
(
−
5
)
2
−
4
(
3
)
(
−
12
)
2
(
3
)
x
=
5
±
√
25
+
144
6
x
=
5
±
√
169
6
x
=
5
±
13
6
That is:
x
=
5
+
13
6
=
18
6
=
3
or
x
=
5
−
13
6
=
−
8
6
=
−
4
3
Answer: ? = 24/2 <em>or </em>12
Step-by-step explanation:
See answer above :)
3 3/4 + 3 1/4 =7+3 =10
1/4+1/4+1/4= 3/4 or 1/4 * 3=3/4
41 and 47 because there is no multiplication fact for those numbers
Answer:
equation: y = 1/2 * x + 4
Step-by-step explanation:
y = -2x + 5
slope : -2
slope of perpendicular line: 1/2
2 = 1/2 * (-4) + b
b = 4
equation: y = 1/2 * x + 4