2 years ago

Find a ⋅ b. a = 1i - 3j, b = 2i + 3j

Mathematics

1 answer:

Irina18 [472]2 years ago

5 0

Answer:

Consider the given vectors.

a=3i+2j−6k

b=4i−3j+k

Now,

a⋅b=(3i+2j−6k)(4i−3j+k)

a⋅b=12−6−6=0

Therefore,

Two vectors a and b are perpendicular.

Thus, the angle between the vectors a and b =90

∘

Hence, this is the answer.

You might be interested in

What is the base of a triangle with an area of 207 square inches and a height of 18 inches ?

xenn [34]

Answer:

A=1/2 B x H

207=1/2 B x 18

B=207/18 x 2

B= 23 inches

8 0

2 years ago

C Cost of an MP3 player: $129.509 Markup: 60% N

SashulF [63]

Answer:

around $87

Step-by-step explanation:

have a great day

4 0

3 years ago

posledela

Answer:

6(x-8)=5-2x

Step-by-step explanation:

let the number be x

so we have six times the difference between a number and 8

that is 6(x-8).

is equal to 5 less than twice the number ..we have

=5-2x.

therefore, our answer becomes:

6(x-8)=5-2x

5 0

3 years ago

HELP PLEASE! Will give out brainliest

charle [14.2K]

Answer:

i would say b but not sure

Step-by-step explanation:

hope this helps let me know if i got it wrong

4 0

4 years ago

What is the solution to 4(3x−5)=−80? x=−5 x=5 x=−253 x=253

sveta [45]

Answer:

-5

Step-by-step explanation:

5 0

3 years ago