The diameter of a semicircular pond is 7 m. Find its perimeter.

Approximately 18 m

Explanation:

Hi there!

What we need to do to solve this question is the following:

1. Find the circumference of the circle, as if the pond is CIRCULAR and NOT SEMICIRCULAR

2. Divide the circumference in half to find the length of the round part of the semicircle

3. Add 7 m to that value to get the straight side of the semicircle

1. Find the circumference of the circle (C)

where d is the diameter

Plug in the diameter 7 m

We're not going to solve this just yet, but we will in the end. This is so that we can get a more precise answer.

2. Halve the circumference

3. Add 7 m

Therefore, the perimeter of the pond is approximately 18 m.

I hope this helps!

B. use a familiar concept to communicate an idea

Explanation:

Basically, Passage 2 states the hypothesis that spotted green pigeon is a descendant of an island hopping bird and throughot the article, it provides evidence for this statement.

The discovery is that, since the DNA found in a green pigeon's feather was fragmented and they had to analyze only parts of it, the bird had an unique sets of DNA which distinguish it from other members of the pigeon species.

These analyzed parts of DNA are refered to as "mini barcodes".

Since target audience for this article might not be fully familiar with the concept and functions od DNA, researchers used a more familiar concept of barcodes as an analogy to communicate their idea and explain their discovery.

True.

Explanation:

The uncertainty of inventiveness and futuristic ideas usually deal with science and technology.

Inventibility is something uncertain which promotes a risk in any system in which it is inserted. With that, we can naturally associate it with the maintenance of science and technology, because both are in need of inventing new creations, which may or may not be effective for the defeat of uncertainties and the creation of certainties.

This is usually linked to futuristic ideas, which may not fit in today's society, but which impose improvements, or not, for societies in the future. Leading to the creation of more technologies and more sciences.

Sucrose is disaccharide composed of glucose linked to galactose is the statement that is not true about carbohydrate structures.

Sucrose is a disaccharide, which means it includes two units of monosaccharide linked together. Each type of disaccharide is composed of different units.

In the case of Sucrose, this is composed of one unit of glucose and one unit of fructose. This disaccharide can be found in common sugar, this means the statement "e" is false because sucrose does not have galactose, instead galactose can be found in lactose, which is a different disaccharide.

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Qualified terms include: sometimes, maybe, may, possibly, some, few Absolute terms include: always, never, only, must Qualified and absolute terms can change the possibility of an answer being correct, by simply including an always, only, or never in the test question.

Explanation:

sample answer