Answer:
(
3
x
+
1
)
(
3
x
−
1
)
is the factorised form of the expression
idk if its right so dont come at me and i also think that it didnt paste right.
Answer:
C
Step-by-step explanation:
I think the answer would be 36.5. I divided 4.38 by .12
I think it's a pattern, so x would be 3 and y would be 5 for the first one
x would be 20 for the second
and i dont even do word problems so...
Using two unit multiplier 628 km is equal to 62800000 cm
<u>Solution:</u>
628 kilometer to centimeter
We will go from kilometers to meters to centimeters.
Start by putting 628 km over 1:

We want to get rid of km and bring in m.
We know that 1000 m = 1 km.
Since km is in the numerator, we will make the first unit multiplier by putting 1 km in the denominator and 1000 m in the numerator, so the km will cancel. So we multiply by the unit multiplier,

Now the km's will cancel:

Now we want to get rid of m and bring in cm.
We know that 100 cm = 1 m.
Since meter is in the numerator, we will make the first unit multiplier by putting 1 meter in the denominator and 100 cm in the numerator, so the meter's will cancel. So we multiply by the unit multiplier


We cancel the m's and we end up with:

= 62800000 cm
Thus 628 km is equal to 62800000 cm