Asterling silver platter is made up of a mixture of silver and copper. the ratio of silver to copper is 37 : 3 by mass. if the platter has a mass of 600 grams, what is the mass, in grams, of the copper in the platter?

45g

Step-by-step explanation:

This is a ratio question and we are asked to obtain the mass of the copper.

Firstly, we add both ratios together and thus gives 37 + 3 = 40

Now, we place the ratio of the copper which is 3 and divide by the addition then multiply by the total masses of both in grammes.

Hence we have 3/40 * 600 = 45g

Thus, the mass of the copper in grammes is 45g

60

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh