Answer:
(8,0)
Step-by-step explanation:
First equation
2
x-
4y
=
32
2
x
=
32
+
4
y
x
=
32
+
4
y DIVIDED BY 2
x
=
32/
2
+
4
y/
2
x
=
16
+
2
y
Second equation
8
x
−
8
y
=
96
Factorize
8
(
x
−
y
)
=
96
Transfer the 8 and put value of x
16
+
2
y
−
y
=
96
/8
16
+
y
=
12
y
=
12
−
16
y
=
−
4
Get the value of x
x
=
16
+
2
y
x
=
16
+
2
×
−
4
x
=
16
+
(
−
8
)
x
=
8
Answer:
It gives you 28 different 10-digit numbers
Step-by-step explanation:
The leftmost position digit can not be 0 --- hence, it is 1, since there is no other possibilities.
The rightmost position (the "ones" position) must be 0 to provide an even number.
Hence, you have 8 remaining positions to fill with six ones and two zeros by an arbitrary way.
You can place two digits of zero among 8 positions by 
= 
different ways = 4*7 = 28 different ways,
1st use the Step! Please, Excuse, My, Dear, Aunt, Sally! Ehich also means (PEMDAS) Parenthesis (), Exponents ", Multiple ×, Division÷, Addition+, and Subtraction-. Than your going to solve! (3n+5)×9=n×7
27n+45=7n
27n-7n=-45
20n=-45
n=-45/20= -9/4
-2a-9=6a+15
Move 6a to the other side. Sign changs from +6a to -6a.
-2a-6a-9=6a-6a+15
-2a-6a-9=15
-8a-9=15
Move -9 to the other side. Sign changes from -9 to +9.
-8a-9+9=15+9
-8a=15+9
-8a=24
Divide both sides by -8
-8a/-8=24/-8
a=-3
Answer: a=-3
Octagon is 309.02cm²
Pentagon is 172.05in²
