Find a. b. if a =10i+4j and b = 3i+4j

10i+4j times 3i+4j=

30i+16j

(30,16)

Step-by-step explanation:

Option (c) is correct.

The dot product of given vectors and is 46.

Step-by-step explanation:

Given : The vectors   and

We have to find the dot product of given vectors a and b

Consider the given vectors and

We have

Thus, The dot product of given vectors and is 46.

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3