Answer:
In order by appearance
1. rational
2. irrational
3. rational
4. rational
5. irritatinal
6. rational
7. irritational
Step-by-step explanation:
1) 99/264
2) 8√5
3) 7.12
4) 6
5) pi is not a rational number
6) fractions are rational
7) 1/2·(√6-1)
Rational numbers are numbers that can be shown as a ratio or a fraction and irrational numbers are the opposite of that
X miles per hour - <span> speed of the boat in still water
(x - 2) - speed up the river
(x + 2) - speed down the river
</span>
=
30 * (x + 2) = 38 * (x - 2)
30x + 60 = 38x - 76
- 8x = - 136
x =
17 miles per hour - <span>
the speed of the boat in still water.</span>
Step-by-step explanation:
I assume you meant :
the restaurant has 20 1/2 pounds of bananas.
one smoothie uses 1/8 pound of bananas.
how many smoothies can be made with the amount of available bananas ?
the answer is as many as the times 1/8 fit into 20 1/2.
so, we actually calculate
(20 1/2) / (1/8)
first we will convert the mixed number into a true fraction :
20 1/2 = 40/2 + 1/2 = 41/2
so we have
41/2 / 1/8
and then, when dividing fractions we have 2 choices (they do both the same, of course, but start looking differently) :
a/b / c/d = a×d / b×c
a/b / c/d = a/b × d/c = a×d / b×c
so,
41/2 / 1/8 = 41×8 / 2×1 = 41×4 = 164
they can make 164 smoothies.
The minimum amount of sheets she can use are 4 sheets. 3 sheets contain 10 cookies, and 1 sheet has 6 cookies.
