Answer:
2 with a left over 3/12
Step-by-step explanation:
1/3 translates to 4/12 which can go into 11/12 twice, leaving 3/12 left over.
<span>unit rate of miles per hour = (2/3) / (2/9) </span>
Answer:
Step-by-step explanation:
Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to use. Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 goes up to 80. There are many ways to round.
Answer:
Distance is 37 units
Step-by-step explanation:
Put it in the distance formula on my TI84 Plus CE.
Answer:
See proof below
Step-by-step explanation:
Let 
. If w=-z, then r=0 and r is real. Suppose that w≠-z, that is, r≠0.
Remember this useful identity: if x is a complex number then 
where 
is the conjugate of x.
Now, using the properties of the conjugate (the conjugate of the sum(product) of two numbers is the sum(product) of the conjugates):
=
Thus 
. From this, 
. A complex number is real if and only if it is equal to its conjugate, therefore r is real.
