What is the value of the expression when a = 2, b = 6, and c = 5?

7b−4a+6c2

a.22

b.36

c.49

d.65

D.65

Step-by-step explanation:

a=2

b=6

c=5

Calculating the value of ,

=

=

=

=

=

=

Hence the value of the given expression is equal to 65.

Among the given options, option D is the correct option.

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units   and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

hope this

answer

false

explanation

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