eileenxmata eileenxmata

12-02-2018
Mathematics

contestada

Find a ⋅ b.
a = <7, 4>, b = <3, 5>

a) 41
b) <10, 9>
c) -1
d) <21, 20>

Respuesta :

hisroyal1 hisroyal1

12-02-2018

The answer is 41 (Option A)

Expalanation

Given,
a = <7, 4>
b = <3, 5>

We are told to find a ⋅ b (which is a scaler product)

Taken that,

a = <x₁, y₁>

b = <x₂, y₂>

a ⋅ b = x₁x₂ + y₁y₂

a ⋅ b = (7 * 3) + (4 * 5)

a ⋅ b = 21 + 20

a ⋅ b = 41 (OPTION A)

Answer Link

Otras preguntas

A sample of an element is malleable and can conduct electricity. This element could be (1) H (3) S (2) He (4) Sn

Was the Renaissance a continuation of or a separate era of the Middle Ages?

Aaron is solving the equation x2 – x = –2 with the quadratic formula. What values should he use for a, b, and c? a = 1, b = –1, c = –2 a = –1, b = 1, c = –2 a =

describe how supply-side fiscal policy can be used to stimulate the economy

List three important steps in the early development of life on Earth?

14. The ancient geographic setting of an area is known as its A. passive margin. B. phytoplankton. C. paleogeography. D. transgression.

what action by president lincoln most angered the radical reoublicans in congress

Which solution has the greatest buffer capacity?

An atom in the ground state has two electrons in its first shell and six electrons in its second shell. What is the total number of protons in the nucleus of t

Domestically, President Nixon was most concerned with increasing civil rights strengthening federal power restoring law and order aiding military power