Answer:
3
Step-by-step explanation:
5 1/2 = 5 × 2 + 1/2 = 11/2
3 5/8 = 3 × 8 + 5/8 = 29/8
Now,
5 1/2 - 3 5/8 = 11/2 - 29/8
11/2 - 29/8
11 × 8 - 29 × 2/8 × 2
88 - 58/10
30/10 = 3
Thus, 5 1/2 - 3 5/8 = 3
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Answer:
Cancellation property
Step-by-step explanation:
la propiedad es propiedad de cancelación.
for c
8x
4
−2x
3
−27x
2
+6x+9=0
Let the roots be a,−a,b,c
S
1
=a−a+b+c=−
8
−2
=
4
1
b+c=
4
1
.....(i)
S
3
=−a
2
b−abc+abc−a
2
c=−
8
6
⇒a
2
(b+c)=
4
3
.....(ii)
dividing (i) by (ii)
⇒b+c=
4
1
......(iii)
S
4
=−a
2
bc=
8
9
⇒bc=−
8
3
....(iv)
substituting b from (iii) in (i)
b(
4
1
−b)=−
8
3
4
b−4b
2
=−
8
3
2b−8b
2
=3
8b
2
−2b−3=0
8b
2
+4b−6b−3=0
4b(2b+1)−3(2b+1)=0
(4b−3)(2b+1)=0
⇒b=
4
3
,−
2
1
substituing b in (iv)
⇒c=−
2
1
,
4
3
S
2
=a(−a)+(−a)(b)+bc+ca=
8
−27
⇒−a
2
−ab+bc+ac=
8
−27
The value of s
4
is not satisfied for b=−
2
1
So the roots of the equation are
3
,−
3
,
4
3
,−
2
1
In scientific notation, you want (a number less than 10 and more than 0) times 10^x
so 48978 made so that it is less than 10 and more than 0 is
4.8978
we count how many times we divided 48978 by 10 to get 4.8978 and we get 4
so 4.8978 times 10^4
or on an online test
4.8978e+04