You can convert 1000 to hex and see how many digits that requires:
So every integer below 1000 needs up to 3 digits.
Alternatively, we know that
, and that
requires
digits in its hex representation (e.g.
). Taking the logarithm, we get
, and adding 1 gives the number of digits needed to represent
. Similarly,
The volume of a cube is L^3 where L is a side length. Here we have 2 identical cubes so
128=2L^3. Divide by 2 then
64=L^3. Take cube root of both sides to get
L=4
The answer is D because it lines up with the y intercept
2×8=16 bring down the 6 carry the one 2×1=2+1=3 so you have 36
bring down a 0 3×8=24 carry the 2 bring down the 4 3×1=3+2=5 which is 540
540+36=576
the answer is 576
Answer:
see below
Step-by-step explanation:
Using the segment addition postulate
AB + BC = AC
x+2 + 7x-3 = AC
Combine like terms
8x -1 = AC
Using the segment addition postulate
PQ + QR = PR
8y+5 + QR = 13y+25
Subtract 8y from each side
5 + QR = 13y-8y+25
5 + QR = 5y+25
Subtract 5 from each side
QR = 5y+25-5
QR = 5y+20
