Answer:
they found a daunting range of mountains that took weeks to cross.
Explanation:
By the time they arrived at the ocean, Lewis and Clark knew that the Northwest Passage did not exist.
Out of 150 offsprings born to a gray, 38 offsprings are expected to be blue with short fins
<h3>How to determine the expected number of blue fish with short fins</h3>
To do this, we make use of the following representations
- L represents long finned fish
- l represents short finned fish
- g represents the gray fish
- b represents the blue fish
So, we have the following genotypes
Lg, Lb, lg, lb
In the above 4 genotypes, lb represent the blue fishes with short fins
So, the probability of selecting a blue fish with short fins is:
In 150 offsprings, we have:
n = 150
So, the expected value is:
This gives
Evaluate the product
Approximate
Hence, 38 offsprings are expected to be blue with short fins
Read more about expected values at:
brainly.com/question/11377348
<span> In the last quarter of the 19th century, all four items were sources of energy. Kerosene was commonly used for lighting, electricity was beginning to replace gas lighting and steam was used to power boats, trains, and certain kinds of industrial machinery. Gasoline was the primary fuel of the automobile, or "horseless carriage," which appeared in the 1890's. Of these four, however, steam was introduce the earliest. The concept of the steam engine goes back to ancient times. However, the steam engine was really introduced as a common source of energy early in the 18th Century. So while kerosene, gasoline, and electricity as an energy source were all developments of the 19th century, Steam power is at least a century (and maybe more) older. </span>
Explanation:
volunteering in the community.
