Answer:
<em>37</em>
Step-by-step explanation:
To find the number of calories per hour, you need to divide
185 ÷ 5 = 37
When divided, you get the unit rate or <em>37 calories per hour</em>
9514 1404 393
Answer:
$0.26
Step-by-step explanation:
To find cost per napkin, divide the cost by the number of napkins:
cost/napkin = $3.90/(15 napkins) = $0.26/napkin
Answer:
50
Step-by-step explanation:
Fastest method for calculating 34 is 68 percent of what number. Assume the unknown value is 'Y' 34 = 68% x Y. 34 = 68 / 100 x Y Multiplying both sides by 100 and dividing both sides of the equation by 68 we will arrive at: Y = 3 x 100 / 68. Y = 50%. Answer: 34 is 68 percent of 50
To solve that question we can think by the following way:
- The first letter can be any of the letters (A, C, T or G). Therefore there are 4 possibilites.
- To choose the second letter of the sequence, any letter also can be chose. So, one more time, there are 4 possibilites.
Using the fundamental principle of counting, we will find out that can be formed differents sequences (for example, AA, AG, TT, TG, CT...).
Know we know that, we can generalize. If I have elements and I must choose one of them times to do a sequence, the total number of sequence that I can form will be .
In our question, we want to know how many DNA sequence are exactly 29 letters long. As indicated above, the answer for that is (29 times) .
Therefore, there are DNA sequences with exactly 29 letters long.
I hope I've helped you. =D
Enjoy your studies. \o/