Astudent factors 15c^2 + c – 28 to the following.

(c + 2)(15c – 14)

which of the following statement about (c + 2)(15c – 14) is true?
a. the expression is equivalent, and it is completely factored.
b. the expression is equivalent, but it is not completely factored.
c. the expression is not equivalent, but it is completely factored.
d. the expression is not equivalent, and it is not completely factored.

Answer : C. The expression is not equivalent, but it is completely factored.

can be factored

15 * -28 = -420

21 and -20 are the factors whose sum is +1  and product is -420

This is not equivalent to (c + 2)(15c - 14)

But (c + 2)(15c – 14)  is completely factored

So , The expression is not equivalent, but it is completely factored.

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

the k side

step-by-step explanation:

plese mark mde brainliest!