3x - 2y = -17 -> 9x - 6y = -51
3y - 4x = 24 -> 6y - 8x = 48
9x - 6y = -51
6y - 8x = 48
------------------- +
x = -3
3x - 2y = -17
3(-3) - 2y = -17
-9 - 2y = -17
-2y = -8
y = 4
Coordinate : (-3, 4)
Answer:
5.625¢
Step-by-step explanation:
The amount of energy used by the chandelier is ...
5 × 0.075 kW × 1.5 h = 0.5625 kWh
At 10¢ per kWh, the cost will be ...
0.5625 kWh × 10¢/kWh = 5.625¢ . . . . cost of operation for 90 minutes
Answer:
72
Step-by-step explanation:
( 7 x 4 ) ^4 = 7^4 x 3^4
The rule is:
( a * b )^n = a^n * b^n
Answer:
D ) Power of a Product Property
Answer
Step-by-step explanation:
Law of sines: SinB/15 = SinA/BC
B = 90
A = 180-90-21=69°
BC= (15*SinA)/SinB = (15*sin69)/1 ≈ 14m
