what is the answer of sum of 2X + 8y and 5x + 10y
Answers
Answered by
1
Answer:
Explanation:
First step is to solve the first equation for
x
:
5
x
+
10
y
−
10
y
=
15
−
10
y
5
x
=
15
−
10
y
(5x)/5 = (15 - 10y)/5#
x
=
3
−
2
y
Next, we substitute
3
−
2
y
for
x
in the second equation and solve for
y
:
2
(
3
−
2
y
)
+
8
y
=
10
6
−
4
y
+
8
y
=
10
6
+
4
y
=
10
6
+
4
y
−
6
=
10
−
6
4
y
=
4
4
y
4
=
4
4
y
=
1
Finally, we substitute
1
for
y
in the solution to the first equation and calculate
x
:
x
=
3
−
(
2
⋅
1
)
x
=
3
−
2
x
=
1
Answered by
1
Answer:
Clearly, the given sequence is an AP with first term a=2, common difference d=5 and n=10.
Now,
S10=210[2a+(10−1)d]
Step-by-step explanation:
I I hope it will work you
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