Answer:
Associative Property
Step-by-step explanation:
:)
Answer: 25
Step-by-step explanation: (x-a)² = x² - 2ax + a²
From x² - 10x + k we deduce that 10x = 2·5x and a = 5
Then k = 5²2
Answer:
33.9 million miles.
Step-by-step explanation:
Answer:
4. none of the above
Step-by-step explanation:
cos(x)=-1 is 180 where value x is.180
Step-by-step explanation:
his father's age= 4x
his mother's age= 4x- 7
his age= x
x+4x+4x-7=101
x+ 4x+ 4x= 101+ 7
9x= 108
= 
x= 12
Tesfa is 12 years old