Answer:
Step-by-step explanation:
First, we can write:
x
=
1
.
¯¯¯¯
21
Next, we can multiply each side by
100
giving:
100
x
=
121
.
¯¯¯¯
21
Then we can subtract each side of the first equation from each side of the second equation giving:
100
x
−
x
=
121
.
¯¯¯¯
21
−
1
.
¯¯¯¯
21
We can now solve for
x
as follows:
100
x
−
1
x
=
(
121
+
0
.
¯¯¯¯
21
)
−
(
1
+
0
.
¯¯¯¯
21
)
(
100
−
1
)
x
=
121
+
0
.
¯¯¯¯
21
−
1
−
0
.
¯¯¯¯
21
99
x
=
(
121
−
1
)
+
(
0
.
¯¯¯¯
21
−
0
.
¯¯¯¯
21
)
99
x
=
120
+
0
99
x
=
120
99
x
99
=
120
99
99
x
99
=
3
×
40
3
×
33
x
=
3
×
40
3
×
33
x
=
40
33
Answer:
A sequence that has a contant addition/subtraction to get to the next term
for example:
-3, 0, 3, 6, ...
to get to the next term, we'll need to add 3 each time
Step-by-step explanation:
Step-by-step explanation:
Marked price (MP) = x
Selling Price after discount (SP after discount)
= Rs. 1350
Discount rate = 25%
Now
SP after discount = MP - discount % of MP
1350 = x - 25 % of x
1350 = x - x / 4
1350 = 3x / 4
1350 * 4 =3x
5400 / 3 = x
Therefore x = Rs. 1800
The marked price is Rs. 1800
It will be 4f-30. Using substitution, you get (-8f-12) + (12f-18). Adding this together you get -8f-12+12f-18. Then you add -8f and 12f to get 4f, and add -12 and -18 to get -30.
Im pretty sure is B if I’m wrong sorry
