Answer:
n=-4
Step-by-step explanation:

Apply Product of Power Rule

Set the exponents equal to each other



Answer:
34 sq cm
Step-by-step explanation:
4x4 = 16
9x2 = 18
16+18= 34
Answer:
2cm
Step-by-step explanation:
If there are 10cm in one side there is 10cm in the other the sam hap with 2cm.
If an event has a probability P of happening, then there is a probability of (1-P) of the event not happening.
In this case the probability of the event is p=20/69.
Then, the probability of the event not happening is:

Answer: the probability of the event not happening is 49/69.
Answer:
x=2
HPT 3x+5y=6 (1) và 2x+y=4 (2)
Nhân phương trình (2) với 5 để hệ số y của 2 phương trình bằng nhau. Ta có:
(2)⇔ 10x+5y=20(3)
Trừ (3) cho (1), có: 7x+0y=14⇒x=2