Find a ⋅ b. a = 8i + 6j, b = 4i + 5

Question

asked Dec 18, 2019 103k views

2 Answers

asked Apr 18, 2018 133k views

DenZap asked Apr 18, 2018

8.2k points

2 answers

3 votes

133k views

asked Dec 22, 2019 107k views

Tgkokk asked Dec 22, 2019

8.0k points

2 answers

0 votes

107k views

asked Sep 8, 2019 64.1k views

S T asked Sep 8, 2019

by S T

8.8k points

1 answer

1 vote

64.1k views

Amitamb · Answer 1 · 2019-12-20T03:14:51+0000

Answer:

a.b = 62

Explanation:

We have a = 8i + 6j and b = 4i + 5j

a.b = (8i + 6j).(4i + 5j) = 8i . 4i + 8i . 5j + 6j . 4i + 6j . 5j = 8 x 4 + 6 x 5 = 32 + 30 = 62

So a.b = 62