What's the solution of -x+y=1 x+y =11 using elimination of addition and subtraction
1 answer:
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Answer:
= 96
Step-by-step explanation:
The n th term of a geometric sequence is
= a
where a is the first term and r the common ratio.
Both values have to be found.
Using
a₂ = - 144, then
ar = - 144 → (1)
a₅ = 486, then
a = 486 → (2)
Divide (2) by (1)
=
r³ = - 3.375 ( take the cube root of both sides )
r = - 1.5
Substitute r = - 1.5 into (1)
- 1.5a = - 144 ( divide both sides by - 1.5 )
a = 96
Hence explicit formula is
= 96
Answer:
The length is 16.1 ft and the width is 4.7 ft
Step-by-step explanation:
Let
x -----> the total length of the tables
y -----> the width of the tables
we know that
The area is equal to
so
-----> equation A
-----> equation B
substitute equation B in equation A
Solve the quadratic equation by graphing
The solution is
Find the value of x
therefore
The length is 16.1 ft and the width is 4.7 ft
