Answer:
B
Step-by-step explanation:
We want it to be positive, but also the smallest power because it is a fraction.
Answer:
OK!!!!!!!!!!!!!!!1
Step-by-step explanation:
Answer:
To find the unit price you simply divide 5.60 ÷ 8
the answer would be 70 cents per pencil
Answer:
1
Step-by-step explanation:
= -2 + 7 + (-4)
=5+(-4). (because positive and negative form negative)
=5-4
=1
Answer:
x = 5, y = 9.
Step-by-step explanation:
8^x / 2^y = 64
3^4x * (1/9)^(y -1) = 81
From the first equation
2^3x / 2^y = 2^6
2^(3x-y) = 2^6
So 3x - y = 6 ..........(1)
From the second equation:
3^4x * 9^(-(y-1)) = 3^4
3^4x * 3^2(-(y-1)) = 3^4
3^(4x+ 2(1 - y)) = 3^4
So 4x + 2(1 - y) = 4
4x - 2y = 2
2x - y = 1 .............(2)
Subtract: (1) - (2):
x = 5.
and 2(5) - y = 1
so y = 9.