Answer:
Temperature dropped by 28°C in two hours
Step-by-step explanation:
<u>Initial measurement:</u>
<u>Measurement 2 hours later:</u>
<u>The difference:</u>
Temperature dropped by 28°C in two hours
The vertex of <span>y = 7x2 + 14x + 4</span> is at
(-1,-3) (see attachment)
X
4
−34x
2
+225=0
2 Factor
x
4
−
34
x
2
+
225
x
4
−34x
2
+225.
(
x
2
−
25
)
(
x
2
−
9
)
=
0
(x
2
−25)(x
2
−9)=0
3 Solve for
x
x.
x
=
±
5
,
±
3
x=±5,±3
Answer:
the answer to your question is 8r(d-3)
hope this helps :-)
All the number end in a zero 10 20 30 40 50 60 70 80 90
