Step-by-step explanation:
2(13×5)= 130
2(13×4)= 104
2(5×4)= 40
130+104+40= 274
HE WOULD PAY $5.52 FOR 12 STAMPS BECAUSE 8.28/18=0.46 THE YOU USE 0.46 X 12 = AND GET $5.52
We can display this as an algebraic equation:
x * 1.25 = 40
Now divide by 1.25
x = 40/1.25
x = 32
Hope this helps!
<h3>
Answer: 25</h3>
Explanation:
The "large cars" pie slice takes up 7% of a full circle. This means that the degree measure of this slice takes up 7% of a full 360 revolution.
7% of 360 = 0.07*360 = 25.2 degrees
This then rounds to 25 degrees
The best way is to recognise that, if
x
=
5
is a root, then
x
−
5
=
0
, and ditto for the other two roots. So we have
x
−
5
,
x
−
i
,
x
+
i
all equalling zero. To find our polynomial, we just multiply the three terms together:
(
x
−
5
)
(
x
−
i
)
(
x
+
i
)
=
(
x
2
−
i
x
−
5
x
+
5
i
)
(
x
+
i
)
=
x
3
+
i
x
2
−
i
x
2
−
(
i
2
)
x
−
5
x
2
−
5
i
x
+
5
i
x
+
5
i
2
which simplifies to
x
3
−
5
x
2
+
x
−
5
.
