mcdragon878 mcdragon878

26-06-2020
Mathematics

contestada

What is the magnitude of -2a - 3b when a=3i+9j and b=4i-6j?

Respuesta :

Clintonanthony2 Clintonanthony2

26-06-2020

Answer: Dot product of the 2 vectors = 0. Therefore cos x = 0 where j is the angle between the 2 vectors. S0 j = 90°... I believe.

Answer Link

Otras preguntas

A copper penny has a mass of 3.0 g. A total of 4.0 × 1012 electrons are transferred from one neutral penny to another. If the electrostatic force of attraction

write an equation in slope -intercept form for the line that passes through the points (8,-3) and has a slope of 3 over 2

just need b1 and b2 brainliest to whoever answers 50 points

Quick please!! What’s the distance between the following points?

4.50 moles of glucose in 3.50 L of a glucose solution

What is likely to happen if a nondemocratic government responds to internal unrest with the use of force by the military or by police? A. Democratization B.imme

PLEASE HELP QUICK! Why does thermal energy increase on a roller coaster? Especially when it goes up the second hill?

determine the fall (drop) on 20' of drainage piping with a 1/4" per ft. grade

Could someone help me with the first two parts of this geometry question? I can do the third and fourth myself.

Which of the following is equal to the fraction below ? (answers are in the picture)