IF YOU HELP I WILL GIVE YOU BRAINLIEST

3.5 g

Step-by-step explanation:

To answer this, multiply 100 g by 0.035:  3.5 g

9514 1404 393

Step-by-step explanation:

1. The mass of the salt in 100 g of seawater is given as 3.5% of the total mass, so is ...

  3.5% × 100 g = 3.5 g . . . . salt in 100 g of seawater

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2. Let m represent the mass of seawater that contains 100 g of salt.

  3.5% × m = 100 g

  m = (100 g)/0.035 ≈ 2857 g

About 2.857 kg of seawater must evaporate to leave 100 g of salt.*

* Clearly, only the water evaporates, the mass of the evaporated water is 2.757 kg. The number above is the mass of seawater that is required in order to obtain 100 g of salt. The wording of the problem leaves some ambiguity, it seems.

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this