3 years ago

Given a = 2i+j – 2k b= -1 – 7j+k Find a x b

Mathematics

1 answer:

castortr0y [4]3 years ago

7 0

Step-by-step explanation:

a = 2i + j - k

b = -1 -7j + k

a × b = (2i + j - k) (-1 + 7j + k)

-2i + 14ij + 2ik - j + 7j^2 + jk + k -7jk - k^2

-2i + 14ij + 2ik -j +7j^2 +jk - 7jk + k - k^2

-2i + 14ij + 2ik - j +7j^2 - 6jk + k - k^2

You might be interested in

20 POINTS AND BRAINIEST FOR THOSE WHO ANSWER CORRECTLY

Licemer1 [7]

Answer:

x^2 y ^4 ∛ [x^2 y ^2 ] is the answer that I got

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

In order for the function to be linear, what must a be and why?

pochemuha

Answer:

213

Step-by-step explanation:

213

8 0

2 years ago

Evaluate 20 + 6x when x = 0.

bulgar [2K]

Answer:

If x=0 then the answer is 20.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

your school sold 456 tickets for a high school play. An adult ticket cost $3.50. A student ticket cost $1. Total to ket sales eq

Svet_ta [14]

A + s = 456........a = 456 - s
3.5a + s = 1131

3.5(456 - s) + s = 1131
1596 - 3.5s + s = 1131
-3.5s + s = 1131 - 1596
-2.5s = - 465
s = -465/-2.5
s = 186 <====== student tickets sold

a + s = 456
a + 186 = 456
a = 456 - 186
a = 270 <==== adult tickets sold

7 0

2 years ago

Plz help me well mark brainliest if correct....??

oee [108]

Answer:

Table B

Step-by-step explanation:

6 0

2 years ago