Answer:
6
Step-by-step explanation:
2 ÷ 1/3
We use copy dot flip
2 * 3/1
6
The bio students can be arranged in (5 · 4 · 3 · 2 · 1) = 120 different ways.
For each of those . . .
The chem students can be arranged in (5 · 4 · 3 · 2 · 1) = 120 different ways.
For each of those . . .
The physics students can be arranged in (2 · 1) different ways.
For each of those . . .
The subjects can be arranged in (3 · 2 · 1) = 6 different ways.
The whole incredibly boring line-up of presentations
can be arranged in
(120 · 120 · 2 · 6) = 172,800 different ways .
Answer: multiply the number of pounds by 16 to get number of ounces (since there isn't a number in between weighs/pounds)
To answer this you will combine both fractions together to get a total. The denominators are not the same so you will need to create equivalent fractions for both with a common denominator. The denominator is like the units, and to be able to add them they must be the same.
2/5 + 3/7
2/5 = 14/35 and 3/7 = 15/35
14/35 + 15/35 = 29/35
29/35 of the garden are these 2 flowers.
(-9k+8k)*-1
9k-8k=1k
1k*-1=-1k
your answer is -1k