ttmarkstt ttmarkstt

04-03-2018
Mathematics

contestada

Find a ⋅ b.

a = 7i - 4j, b = 4i + 3j

A) <28, -12>
B) 16
C) -40
D) <11, -1>

Respuesta :

sqdancefan sqdancefan

11-12-2018

Answer:

B) 16

Step-by-step explanation:

The dot product of a pair of vectors is the sum of the products of their corresponding parts. It is a scalar.

... a · b = (7i -4j) · (4i +3j) = 7·4 + (-4)·3

... = 28 -12 = 16

Answer Link

Otras preguntas

Who is the speaker in The Ghost Map?

WHAT IS THE VALUE OF X?

Bile salts help in the digestion of A. Protein B. Carbohydrate C. Lipids D. Water Only answer if you know. ASAP! PLZ help!

How did Adolfo hitler get the youth of Germany to buy into his ideology

What 1997 global agreement to reduce greenhouse gases was signed by virtually every country in the world except for the united states?

Explain why Montag does not run away once it is apparent that the firemen have arrived at his house to burn his books. Question 6 options: a) He does not run a

What is a major way that a consumer can protect himself/herself when getting a credit card? A) Making sure that they get a very high credit limit. B) Reading t

In paragraph 2,the word construction which is based on a latin root word means

What were some key benefits for Europeans during the Age of Exploration? Check all that apply.

Que inspira a un autor del Neoclasicismo?