Question

..Write the equation for: When 7 is added to 10 times of a, we get 77..​

Answer 1

Step-by-step explanation:

Correct option is

A

14

2i−3j+k

We have 2

i

^

−3

j

^

+

k

^

Let u=2

i

^

−3

j

^

+

k

^

Unit vector is of the form

u

^

=

∣u∣

u

⇒

u

^

=

∣

∣

∣

∣

2

i

^

−3

j

^

+

k

^

∣

∣

∣

∣

2

i

^

−3

j

^

+

k

^

=

2

2

+(−3)

2

+(1)

2

2

i

^

−3

j

^

+

k

^

=

4+9+1

2

i

^

−3

j

^

+

k

^

⇒

u

^

=

14

2

i

^

−3

j

^

+

k

^

verified_toppr

Answer 2

(10)a +7 =77

this is the equation