shiyaharper

09.01.2020 • 

English

Which one of the following statements about topic sentence and main idea is accurate?
a. a topic sentence is a central idea of a paragraph, while a main idea is the central idea of an entire text.
b. a topic sentence is found in the introduction, while a main idea is found in the conclusion.
c. a topic sentence does not change position, but the main idea can be found in multiple places.
d. a topic sentence and main idea are always the same.

Ответ:

lilblakey69

14.01.2022

English

---

A. a topic sentence is a central idea of a paragraph, while a main idea is the central idea of an entire text

---

0,0(0 оценок)

Ответ:

Queenhagar

06.02.2021

English

---

Any vector in the xy-plane has the form v = c1i + c2j + 0k

For v to be perpendicular to a, we need v · a = 0

So, 3c1 - 5c2 = 0

For example, choose c1 = 5 and c2 = 3.

Then v = 5i + 3j + 0k is perpendicular to a.

ll v ll = √[52 + 32 + 02] = √34

A unit vector in the xy-plane that is perpendicular to 3i - 5j + k is:

u = v / llvll = (5/√34)i + (3/√34)j + 0k

---

0,0(0 оценок)